Blockchain makes money

Enter the website of bitcoin wallet in the browser to download a bitcoin wallet,

After successful installation, open the wallet, click start a new wallet or create my free wallet.
How to register bitcoin wallet triplicate
First enter your email address and then enter your password twice. Then enter the verification code.
Here we should pay attention to: the password should be more than 10 digits, and we must remember that if you lose or forget it, you can't recover it. It's equivalent to losing your money and you really can't get it back.
Click continue.
How to register bitcoin Wallet
Well, the wallet was created successfully. Print out the following tips or copy them to another safe place to save them. It may be of great use if you lose your password one day.
To mine bitcoin, you can download special bitcoin computing tools, then register various cooperative websites, fill the registered user name and password into the computing program, and then click the operation to officially start. After completing the bitcoin client installation, you can directly obtain a bitcoin address. When others pay, you only need to paste the address to others, and you can pay through the same client. After installing bitcoin client, it will assign a private key and a public key. You need to back up your wallet data containing your private key to ensure that your property is not lost. If the hard disk is unfortunately completely formatted, personal bitcoin will be completely lost.

Is the newly bought bitcoin safer on the exchange or better in the wallet? Today, let's talk about whether the bitcoin you bought is put in the exchange or in the wallet. Everyone has different opinions on this question. This question is equivalent to whether it's better for you to put your money in the bank or take it in your hand. However, there is no absolute answer to this question, Just like preventing the risk of market decline, you may have some means to improve the safety factor, but you can't avoid all the risks, including where bitcoin is safe. To deal with this problem, you can only do it differently from person to person.

For the money hoarders, they are investors who hoard bitcoin for a long time and won't sell it in the short term. Their biggest feature is that they only buy and don't sell it in general. For these people, my suggestion is not to put it in the exchange or withdraw money from their wallet after each purchase, because most of the money hoarders are mainly in the form of fixed investment, The fixed investment is a process of adding up a little and making a lot. In the case of high probability, the number of bitcoins we buy each time is actually very small. For example, the number of bitcoins we bought about 1000 yuan a week was about 0.02. If we mention our cold wallet after each purchase, the final number of coins I will invest will be 2.5% less than now, That is to say, when you buy a bitcoin, there are only 0.975 left. As for the remaining part, it is a handling charge from the exchange to the wallet, because the handling charge for withdrawing coins in the exchange is generally 0.000 5 bitcoins, so each withdrawal requires so many handling charges.
For example, if you withdraw 0.02 fixed investment per time according to this handling fee, it is equivalent to charging me 2% every time. The accumulated figures are absolutely unimaginable. Therefore, my practice is to wait until the fixed investment bitcoin has accumulated to a certain amount, and then mention your cold wallet for storage at one time, because the handling fee for one bitcoin is the same as that for 10 bitcoins, or 0.02 bitcoins, It is almost possible to ignore the existence of handling charges and achieve the ultimate accumulation. As a money hoarding party, it not only achieves the effect of hoarding money, but also avoids the risk of collapse due to the emergence of black swans in the exchange.
The second case is for the novice Xiaobai who has just entered the circle, because most of them are novices who will ask this question. My personal suggestion is to put the currency on the exchange first for the following reasons:
1. Novices are not familiar with wallets and many concepts are vague. I saw in the comments before that many people can't figure out what hot money bags and cold wallets are, but I have to admit that these wallets of blockchain are really brain damaging. It's difficult for a newcomer to understand them. Once you lose your private key or are stolen by hackers, Then your chances of getting it back are almost zero.
2.99.99% of the cases, these exchanges will not have the problem of being unable to withdraw cash, because the business model of the large exchange has been formed, and it can receive handling fees almost every day, which can make a normal profit rate. It is unnecessary for him to do something unfavorable to himself.
3. If the exchange password is lost, you can get it back through the system mobile phone or binding email. However, the wallet can't do this. Some newcomers can't stand loneliness and will trade a few at the beginning. I think we have to control their own hands first and then their bitcoin wallet, This will be a more reasonable order.
For newcomers, I suggest putting it directly into the exchange. The handling fee of bitcoin withdrawal is actually very expensive. As a novice with small capital, it is a little overloaded. For old leeks with small capital, it is also recommended to put it in the exchange for the same reason. The withdrawal procedure is too high. For novices with large capital, My suggestion is to find out the concept of wallet at the first time, what is cold wallet and hot wallet, and then put about 50% of the assets in the wallet to avoid the occurrence of the black swan incident. For the old leek with a large amount of capital, I don't need to say more. They have rich capital experience. However, here's a little suggestion. For such people, it depends on their own trading needs to determine the proportion of your trading needs, so how much proportion of funds you can put in the exchange, not only because of the handling fee, but also because of the timeliness. We all know that bitcoin transfer is actually very slow, Generally, it takes about half an hour to start trading. Maybe you find an opportunity in the market. When you transfer money from your wallet to the exchange, the gap opportunity of this operation may have disappeared.
Both the wallet and the exchange have their own advantages and disadvantages. The exchange is easy to manage and trade. However, there is the possibility of the black swan incident. It is relatively safe to keep it in your wallet, but you are also easy to lose it if you are unable to keep the private key, In addition, there is no bitcoin at the transaction demand level. Is it better to put it in the security of the exchange or the wallet? Safe at the exchange.
Of course, some people put their assets in several wallets to spread the risk. Even if they pour one, there are other assets
Custody of assets and investment is actually a truth. There is no absolutely good way of asset allocation and no absolutely safe way of custody.

Im wallet supports bitcoin BTC operation tutorial

1、 Mnemonic backup
Imtoken's BTC wallet supports mnemonic word backup and private key backup of a single address.
Backup mnemonics for BTC Wallet
1. Open imtoken software to enter the asset page and click "..." at the top right of the page Button to enter the wallet management interface
2. Select export mnemonics“
Back up the private key of a single address
1. Enter BTC wallet management interface and click "wallet address"“
2. Select the address where you want to export the private key and slide the screen from right to left
3. Select export private key“
be careful:
1. It is recommended to back up the mnemonic words of BTC wallet, because backing up the mnemonic words is equivalent to backing up the private keys of all sub addresses and change addresses under the main address (click here to see how to safely back up the mnemonic words)
2. If the BTC wallet is imported using the private key, you can only export the private key, not mnemonics
How does imtoken modify the import path of BTC wallet?
Open imtoken, click the menu bar in the upper left corner of the wallet home page to enter the wallet selection page, and then click the upper right corner ⚙  Button to enter the wallet management page, click + in the upper right corner to enter the add wallet function, and select import bitcoin wallet.
Enter the wallet mnemonic in the text box, select the path, enter the correct wallet path, and set the transaction password of the wallet. Click "start import" to complete the wallet import
2、 How does imtoken switch between the normal address and isolation witness address of BTC wallet
Imtoken's BTC wallet supports two forms of addresses: normal address and segwit.
When importing BTC wallets, you can select the imported address form. After importing wallets, you can also switch the wallet address according to the actual use needs.
Operation steps:
1. Open imtoken software to enter the asset page and click "..." at the top right of the page Button to enter the wallet management interface
2. Click "switch address type"
3. Select "normal" and enter the wallet password
4. The wallet address is switched to the normal address starting with 1.
be careful:
1. The transfer fee of isolated witness address is less than that of ordinary address.
2. The assets of ordinary address and isolated witness address are not interconnected. If you want to transfer assets, you can send transfer.

Recently, sun Yuchen, the founder of cryptocurrency wave field, said on his microblog that "due to the sudden kidney stone being treated in the hospital, the lunch meeting with Mr. Buffett was cancelled for some reason. At present, his physical condition is stable and in the recovery period, so he can't accept the interview. Please forgive me".

The sudden appearance of such a situation at the meeting, which had attracted much attention, was really surprising.
The reporter of "daily economic news" noted that affected by the news, as of 23:26 yesterday, the quotation of wave field / Tron fell by 24.76%, and the market value also fell out of the top 10 cryptocurrencies.
Not long ago, the digital currency scheme Libra promoted by Facebook attracted great attention from the market. Since then, G7 finance ministers and central bank governors reached a consensus to strictly supervise Libra. This move is to push the attention of digital currency to a climax.
About this series of events, where is the investment value of virtual currency? What is the difference between bitcoin and other virtual currencies? The reporter of the daily economic news (hereinafter referred to as NBD) interviewed Xiao Lei, a digital currency analyst.
Sun Yuchen's hype
NBD: what do you think of sun Yuchen's sky high price of Buffett's lunch?
Xiao Lei: if we look at the development history of blockchain or the development history of digital currency, this is indeed a turning event.
As we all know, in the traditional market, Buffett is known as the God of stocks and has become the richest man in the world. He has too many followers around the world, including China. In another new investment market, sun Yuchen was able to take this lunch for more than 30 million yuan and sit down to have dinner with Buffett, which is of historic significance in itself.
The collision of these two forces involves too many things. Because the currency issued by sun Yuchen himself has been traded in the secondary market. If you look at the standards of a listed company, it is already a public event. We must pay attention.
But this matter will not bring much help to his own project. Wave field is a project starting from marketing. There are two kinds of projects in the digital money market. One is the start of technology, that is, CTO (Chief Technology Officer) finally becomes the leader of the project, uses his technical ideal, organization, algorithm and community to let more people participate in this matter, and then pushes up the price of money.
There is also a model, that is, complete marketing. If you participate, I can promise you many benefits and even invest in you.
Meeting people like Buffett, I think this is a peak of marketing. Next is the turning point. It's hard to create an event that is more sensational than eating with Buffett.
In addition, as the founder of a coin issuing company, you take so much money to have a meal, and you have no goal, just to instill an idea into Buffett and make him recognize the blockchain. Buffett is a person who is difficult to be convinced. Of course, sun Yuchen knows it, so this matter is a hype in sun Yuchen's logic.
His marketing approach is not a good start for the whole market. On the contrary, it makes the digital money market more controversial and has a greater gap with the traditional market.
Bitcoin is difficult to stably return investors
NBD: Facebook vigorously promoted Libra, and bitcoin also soared before. How do you view this phenomenon?
Xiao Lei: globally, the definition of virtual currency is very difficult.
Some countries define it as virtual goods, some as assets similar to cash, and some as illegal assets. But in the existing currency, no matter how you define it, bitcoin is already a real thing.
The United States is the benchmark of global finance. The United States defines what an asset is like, which is basically accepted by the whole world. The financial rules in today's world are dominated by the United States, and the dollar has a great influence. From the perspective of the United States, it has at least launched legal bitcoin futures, which shows that the United States has recognized its legitimacy.
So can bitcoin bring returns to investors? I have to say something else.
The market value of this wave of virtual currencies, at its peak, was close to $400 billion. What is this concept? Facebook's market value is $400 billion. In this case, it cannot be said that virtual currency has no value.
In economics, price is basically value. How can something without value have a price?
The question now is, is its value stable? Can its price fluctuation bring investors a stable return on investment? There's a question mark.
Of course, the security of bitcoin is slightly higher. In this way, its volatility is nearly 10 times that of gold. In other words, when gold fluctuates by 1%, it fluctuates by 10%. Although it has value, its value or its investment attributes and risks are not affordable to ordinary people.
In reality, few profitable (virtual currency) projects, including sun Yuchen's wave field currency, have a market value of $15 billion, but they still don't make money. It's always spending. You don't pay dividends when you hold coins, and it doesn't mean you have equity. This is a "Bo silly" game, or zero sum game. I hold it for the purpose of selling it to you at a higher price. If you don't answer, it'll fall into my hand.
Why is this kind of thing still pursued? Where does its value come from? That's blockchain. Bitcoin only uses blockchain technology, but blockchain technology is absolutely valuable.
It is a very low-level technology. It can reduce the transaction cost of the whole society and promote the development of society. In fact, when we pursue virtual currency, we expect that the blockchain will be recognized and erupt one day.
So investors will ask, can I catch this bus? But when he went to look for the car, he couldn't find the target. Now some people have made a coin and said that this is the blockchain. You can take my car and be fooled. It is not certain how much this currency has to do with the future blockchain revolution.
The value of virtual currency is based on blockchain, but these are some very marginal things that everyone can touch. How can we dig out the real value of blockchain? No one knows this. In this regard, China's central bank, bat and other Internet giants are also exploring.
Bitcoin is a star application of blockchain, which proves that the technology is secure and cannot be destroyed.
Bitcoin has high security
NBD: what are the characteristics of bitcoin compared with other virtual currencies?
Xiao Lei: in the history of monetary development, several metals have undertaken monetary functions, including iron, copper, silver and gold. Among them, what everyone wants to hold most is gold.
What are the value characteristics of bitcoin in virtual currency?
The first is the brand effect. Bitcoin is the first successful application of blockchain technology. It carries forward the blockchain technology to let everyone know. It is the earliest digital currency, opening the history of digital currency.
Its system is very safe and its anti-counterfeiting coefficient is very high. Now there are a large number of hackers in the world. They can only steal the bitcoin you hold, but the bitcoin network cannot be broken. Paper money, including US dollar and Japanese yen, may produce counterfeit money, but bitcoin cannot produce counterfeit money.
The third is its scarcity. Nowadays, many digital currencies are basically not scarce, such as the wave field currency issued by sun Yuchen.
Without brand barriers and accumulated exposure, it will have no scarcity and a very large circulation. It does not mean that the specific issue quantity of a certain coin is very large, but that the issue quantity of this kind of coin is very large. If you think this coin is valuable, I'll issue one. But bitcoin can't be imitated, because it can't be copied. Its release time and user base can't be imitated.
The fourth is its trading liquidity. The transaction value of bitcoin in a single day is more than $50 billion, and there are billions of dollars at ordinary times. Its market value is only more than $100 billion, but its daily turnover is more than $10 billion.
For Wall Street, because there is no practical use, they think more about liquidity. If there are only $100 million to $200 million a day, no one will participate. Many virtual currencies don't even have a daily trading volume of $10 million, which can't be compared with the trading value of bitcoin.

Why do I need a bitcoin wallet

Unlike most traditional currencies, bitcoin is a digital currency. Therefore, the method of this currency is completely different, especially when acquiring and storing it. Since bitcoin does not have any physical shape or form, it cannot be stored anywhere technically. Instead, it is the private key used to access your public bitcoin address and sign transactions that require secure storage. The combination of the recipient's public key and private key makes bitcoin transactions possible.
There are several different forms of bitcoin wallets, which can meet different needs, and are different in terms of security, convenience, accessibility and so on.
Paper wallet
A paper wallet is essentially a document that contains a public address and private key that can be used to receive bitcoin, allowing you to spend or transfer bitcoin stored at that address. These are usually printed in the form of QR codes so that you can quickly scan them and add keys to the software wallet for transactions.
You can use services such as bitaddress or bitcoin paperwallet to generate paper wallets, allowing users to create completely random bitcoin addresses and private keys. The generated documents can then be printed, and some of these services provide tamper proof design. You can even choose to order holographic labels and use them.
The main advantage of the paper money wallet is that the keys will not be stored anywhere in digital form, which makes it completely free from hacker attacks. It can record the malicious software of users' keystrokes and basically any form of digital theft. However, some precautions still need to be taken when creating wallets.
Obviously, before generating a paper wallet, you need to make sure that no one is watching you do so. To eliminate the risk of any spyware monitoring activity, it is recommended to use a clean operating system running from a USB flash drive or DVD, such as Ubuntu.
In addition, once the paper wallet is set up, the website code should be able to run offline, which allows you to disconnect from the Internet before actually generating the key. Finally, use a printer that is not connected to the network.
In addition, it's important to know that you print valuable personal information on a piece of paper. Therefore, you need to take some measures to protect the paper. For example, it is recommended to put it in a sealed plastic bag to prevent water stop, moisture and general wear. Some people like to laminate it and store it in a safe, storage box or entrust a lawyer to deal with it.
Physical bitcoin
Physical bitcoin usually preloads a fixed number of BTCs, and the intention is that its value cannot be spent as long as the private key remains hidden. This is usually achieved by implementing tamper proof sealing.
Bitbill's first product was like a credit card, but most of its subsequent substitutes were shaped into a round medal. Mike Cadwell, a cryptocurrency enthusiast nicknamed "casascius", created the first popular casascius entity bitcoin in 2011.
The private key is hidden under a strippable hologram, leaving a tamper proof mode when it is removed. In exchange, coins lose their numerical value. Since then, there have been several new coin manufacturers.
Physical bitcoin is a very convenient way to store your funds more securely, which is very useful in offline transactions. Most importantly, they have recently become a valuable collection. However, the main disadvantage is serious security problems.
In November 2013, Mike Cadwell was asked to stop the operation of the financial crime enforcement network because his work was considered to be a money sender. The rules of this activity were unbearable, so he had to stop selling items containing digital bitcoin. Since BTC is still a legal gray area in many countries, these items may even be regarded as counterfeit money by the authorities.
move
For those who actively use bitcoin every day to pay for goods or trade them face-to-face in stores, mobile wallet BTC is an essential tool. It runs as a smartphone application, stores your private key and allows you to pay directly from your phone.
In addition, some applications enable users to use their smartphone near-field communication function, which means that they can simply click on their phone to oppose readers without having to provide any information at all.
Any complete bitcoin client needs to access the entire blockchain ledger, which is growing and requires thousands of megabytes of storage space. Therefore, mobile wallet utilizes simplified payment verification (SPV) technology. They are only applicable to a very small subset of the blockchain and rely on trusted nodes in the bitcoin network to ensure that they have the correct information.
Although bitcoin storage is a convenient mobile solution, mobile wallets are vulnerable to hackers. In addition, if someone just accesses your mobile device, you may lose control of your wallet. Devices running on Android have a variety of bitcoin wallet applications. Apple banned bitcoin wallets from the app store in February 2014, but reversed its decision a few months later.
Web Wallet
Web wallet stores your private key on the server of the company that provides such services. The server is always online and controlled by others. Different services provide different functions, some of which link to mobile and desktop wallets and copy your address on your own devices.
Users can access their money anytime, anywhere through the Internet, which is very similar to any electronic wallet. However, unless properly implemented, the organization running the website may access your private key and take full control of your funds. In addition, some e-wallets operate on the basis of exchanges, and some exchanges close and escape users' funds.
Desktop Wallet
The desktop wallet has been downloaded and installed on your computer. Store your private key on your hard disk. By definition, they are safer than online and mobile wallets because they do not rely on third parties to obtain data and are more difficult to steal. They are still connected to the Internet, which makes them inherently insecure. However, for those who trade a small amount of bitcoin from their computers, desktop wallet is a good solution.
Desktop wallet has a variety of different options to meet different needs. Some focus on security, some focus on anonymity, etc.
Hardware
Hardware wallet is a quite unique bitcoin wallet, which can store the user's private key in a secure hardware device. This is the safest way to store any amount of bitcoin. There is no verifiable theft of money from the hardware wallet.
Unlike paper wallets, paper wallets must import software at some time, and hardware wallets can be used safely and interactively. In addition, they are not affected by computer viruses, and the stored funds cannot be transmitted to output devices in clear text. In most cases, their software is open source.
Some hardware wallets even have screens, which adds another layer of security because they can be used to verify and display important wallet details. For example, the screen can be used to generate a recovery phrase and confirm the amount and address of the payment you want to make. Therefore, as long as you invest in a real equipment with a good reputation manufactured by a trusted and competent manufacturer, your capital will be safe and reliable.
Bitcoin wallet and security
Possible problems:
Capture malware. Malware can scan your disk and find your private key. After a few seconds, all your bitcoins can disappear. The Trojan horse can encrypt all files on the hard disk. After that, it may find all the links to your wallet, realize how much money you have and ask for the exact amount of bitcoin to decrypt your hard disk.
Virtual exchange can escape with your money. You can lose a laptop or mobile phone with a wallet installed on it.

In 2008, a person named Satoshi Nakamoto published a paper on bitcoin: a point-to-point e-cash system (original PDF version of the paper), which opened the curtain of bitcoin's popularity all over the world.

The underlying blockchain technology of bitcoin was also found later. Its technical characteristics such as decentralization, traceability and tamperability can be applied to financial, traceability and other scenarios. Whether you want to know about blockchain or bitcoin, we believe that bitcoin, as the birthplace and first application of blockchain, is the first point you need to know more before you get started.
What is bitcoin and how to get it? This article will teach you how to understand and use bitcoin.
1. Account opening
If you want to own bitcoin, whether you buy it at the exchange or transfer it to you, you need a bitcoin account. What materials does bitcoin need to bring to open an account and which institution to open an account? Without any materials, just download a bitcoin wallet.
Little knowledge: bitcoin wallet is another big topic. First of all, it should be clear that the digital currency wallet is not a real "wallet". The currency is not stored in the wallet, but on the chain mentioned above (essentially a pile of numbers). The wallet is just an application that allows you to open an account, query the balance and transfer accounts. In fact, in theory, every currency will be its own wallet. Therefore, most wallets on the market are easier to use, aggregate currencies, or safer. Some are decentralized, while others are cold wallets, hot wallets and managed wallets.
If you are interested, you can click the link below to learn more.
Using the light wallet on the chain can let you know more about some "anti human" designs such as bitcoin's private key, address and mnemonic words. Bitpie and imtoken are relatively old wallets. People with good English can even use the official wallet of bitcoin; Hosted wallets are easier to use, but the private key is not kept by yourself.
With a bitcoin wallet, all you need to do is move your fingers and open an account.
An account of bitcoin consists of a pair of keys (private key, public key). The account owner can use his private key for digital signature, and the public key can verify the signature. The public key can be generated by the private key, but the private key cannot be generated with the public key. That is, the so-called "asymmetric encryption" (reference link: blockchain 100 Q 60 | what is the asymmetric encryption algorithm?). This is also the reason why bitcoin is called digital cryptocurrency, because the whole system depends on the basis of cryptography.
Little knowledge: what does the hash calculation mean here?
Hash calculation has the following characteristics:
1. Mapping data of any length to large integer of fixed length;
2. When the data changes arbitrarily, the calculated results are completely different;
3. Cannot reverse the original data content from the hash result.
There are many implementations of hash algorithms, such as the SHA-256 algorithm used by bitcoin. The hash value is an integer expressed in hexadecimal; As long as the original content changes slightly, the hash result will be thousands of miles worse. Then each time the original content is changed, the hash value obtained is equivalent to a random number selected from the 256 power of 1 to 2. In this way, others cannot calculate the public key through the account address. So you can safely tell others your address and accept the other party's transfer without worrying about account theft. Unless you lose your private key.
When you have your first bitcoin account, you are very happy; But you're also frustrated because it's empty. How to make your wallet bulge?
You have the following ways to achieve this goal:
1. Bitcoin "mining"; The competition is fierce, and the opportunities for ordinary people are slim, but they can rent machines to mine. For details, we can understand that the "easy investment" cloud computing power platform of strategic incubation of planet daily is officially launched to help investors "hold" bitcoin
2. Spend money to buy at the exchange. See this article "how to have the first bitcoin in your life?". At present, the major exchanges we commonly use are centralized platforms with low security. Of course, there are decentralized exchanges, but they are rarely used. Click the link to learn more.
3. Let your good friend transfer some to you; (if you have such friends.)
2 bookkeeping
When you have a bitcoin account and bitcoin, you can transfer between different accounts. The minimum unit of bitcoin is 1 Cong, 1 Cong = 0.00000001btc When we use Alipay to transfer money to others, it is actually the amount of charge that the bank is responsible for deducting your account, add to the account of the other side, give you the bill, and charge your service fee.
Bitcoin transfer steps are similar, but there is no bank role. So in the process of bitcoin transfer, who will deduct the money and who will record the bill?
Different from the banking system, there is a decentralized accounting method: distributed ledger. That is, the ledger is no longer maintained by the banking system, but jointly maintained by participants. It is simply understood as: everyone can participate in bookkeeping. The person who maintains the ledger is generally called a node, also known as a miner.
In the blockchain, transactions are arranged in chronological order. A blockchain is the packaging of a pile of transactions, and blocks can be regarded as a page of ledger.
The bookkeeper of each page of the ledger (that is, the blocker of this block) must be selected through a competition to obtain the power of bookkeeping. After recording this page, broadcast it to everyone else. This process is called block, also known as "mining".
Others can verify these transactions through cryptography. As mentioned above, the account owner can digitally sign with his private key and verify the signature with his public key. Other people involved in bookkeeping can synchronize the latest account book of this block / page and continue to dig on it. At the same time, in the blockchain, each page of the ledger (each hash) is linked, and the hash value of the previous block is recorded through the hash algorithm mentioned above.
In such a distributed system, each node independently maintains a complete transaction ledger, which is also called "distributed ledger". The approval of most nodes is required every time. No node can tamper with the account book alone. Unless it obtains the consent of 51% of nodes, it cannot succeed. This is the so-called 51% attack.
The system operation will not be affected if any node exits the network or goes down. Compared with single node centralized system, this method has high security. Nodes are distributed all over the world. Each node connects with nearby nodes to form a global P2P network. This is also the material basis for the global circulation of bitcoin.
As mentioned in the previous section, if an account wants to know its balance, it can be queried through the wallet.
However, only nodes have complete ledger information, and wallets also need to query their own balance through nodes. So where is the node? I can't see or touch it. Where can I find it? Fortunately, you don't have to bother to find nodes. Your "bitcoin wallet" will help you do it.
In fact, if bitcoin wallet wants to tell the transaction information to the node, it must be connected to at least one node in the bitcoin network. When connected to the node, bitcoin wallet itself becomes a node in the network. However, compared with the whole node with a complete ledger, the wallet node is a "lightweight node", because it does not record a complete ledger, I didn't go "mining".
Curious, you still want to ask one more question: how does bitcoin wallet find nodes?
Very simply, in the process of the development of bitcoin network, there will be some long-term stable nodes called "seed nodes". When developing bitcoin wallet software, it will write the domain names of these "seed nodes" into the code, and ask the "seed nodes" for an active node address list through DNS dynamic query. With these nodes as the media, bitcoin wallet can join the network.
For example, Mr. Chen gave miss.com through his bitcoin wallet LV transferred 0.05btc, which was recorded by the global bitcoin network nodes through the "distributed ledger".
Transfer record: Mr. Chen - > miss LV: 0.05btc of course, the name will not be recorded in this way, but the bitcoin account of the two people, similar to:
1AC4fMwgY8j9onSbXEWeH6Zan8QGMSdmtA -> 1JWq3G8pqCo6jZGhLHpctYap5yVScqGxkv : 0.05btc
Such an accounting process is actually the so-called blockchain. Bitcoin is the first application of blockchain.
3 issuance / Mining
Since it is money, you will ask, how did it come from in the beginning?
This involves the issuance of bitcoin.
Ordinary currencies are issued by some institutions such as the central bank, but in bitcoin, the generation of each block is accompanied by the generation of new currency (this is what is written in the program. Don't ask me why). Whoever wins the bookkeeping right of this round of blocks will get the latest bitcoin.
Bitcoin issued a total of 21 million. The initial block reward is 50 BTCs, that is, for each block excavated, the miner will get 50 BTCs. The system stipulates that for every 210000 blocks (about 4 years), the reward for block output will be reduced by half until it is as little as 1 Cong, the smallest unit of bitcoin. Therefore, the block reward will be adjusted to 25 BTCs after 2012 and 12.5 in 2016. The next halving will be in 2020. This competition process is like digging new gold coins, so everyone will call it mining and call the account book maintainer "miner".
At this point, the incentive mechanism of bitcoin has been involved, that is, why are nodes willing to waste resources to keep accounts?
In fact, in order to reward the nodes for bookkeeping, the bitcoin system is designed so that each user needs to pay the service charge for verifying the transaction when transferring money. At the same time, the nodes that join the network earlier can obtain the newly issued bitcoin (until all bitcoins are issued). In this way, miners can get two parts of their income every time they keep accounts.
4 consensus mechanism: pow
You know, now a bitcoin is worth $10000, so one block from the billing node can get 12.5. Doesn't everyone want to dig?
Bitcoin system has designed a set of competition mechanism in order to make everyone obtain the right of accounting fairly.
The system requires competitors to guess a random number that meets the requirements through SHA-256 operation. Whoever finds it first will get the bookkeeping right. You can understand this process as guessing numbers randomly, who guesses who wins first.
This number, which is guessed at random, will actually be recorded in the header of the block and will always be recorded in the account book as a random number. If you remember the above, you will find that each block mentioned in this article will record the hash value of the previous block, and the hash value itself is calculated through hash calculation. This random number is actually a factor of hash calculation. (the composition of the block and the more detailed process can be seen in the "planet Research Report - the turning point of bitcoin mining industry and the economic cycle behind it")
Since SHA-256 operation is to collide with random numbers, the more people guess in the same time, the more likely they are to find the "answer" and obtain the bookkeeping right. Therefore, this competition mechanism is called workload proof, which is the so-called pow (proof of work).
In order to improve their computing speed, we can only continuously improve the computing power per unit time. Therefore, the hardware equipment has been continuously updated from the original notebook computer to today's professional mining machines (if you are interested, you can learn about the Research Report of planet mining, Figure 6, the update iteration of hardware equipment). Ordinary notebook computers can't dig, so there are mining pools. (if you want to know, you can read Xiaoming's study notes to understand what the mine is for.)
Computing devices are becoming more and more advanced. However, the bitcoin system also has a very interesting setting. It will automatically adjust the difficulty and keep the block time at 10 minutes as much as possible.
Friends who are interested in mining may ask, can they still go mining now? Of course, but I can't use computers or even buy mine machines to dig. The cost is too high. Therefore, there is also a way for ordinary people to participate in mining in the market, which is equivalent to renting other people's machines to mine for themselves. (for details, please click the link to understand) at present, mining has become a relatively mature industry. If you are interested, this article has a more complete and detailed introduction: the inflection point of the industry of bitcoin mining and the economic cycle behind it
5 advantages and disadvantages of bitcoin
Now you have understood the operation principle of bitcoin system. All these complex designs are only for the following conditions:
1. Limited total quantity and reduced supply;
2. Cannot be forged;
3. Convenient and safe transaction;
These characteristics give people confidence that bitcoin can be used as a general equivalent, so slowly:
4. Widely recognized and accepted
In addition, bitcoin also has distinctive characteristics:
5. Decentralization;
6. Global distribution and circulation;
This includes both decentralization of issuance and distributed ledger.
The advantages of bitcoin are obvious, but the disadvantages are also obvious:
1. Bitcoin's "mining" mechanism consumes a lot of global energy;
2. The primary goal of currency speculation is to stabilize the value of bitcoin blindly;
3. The anonymity of the transaction is flawed. Compared with the previous blackmail virus, bitcoin is required to be used as ransom;
4. The total amount of bitcoin is limited, so it is a deflationary currency. The value only increases but not decreases, which may lead to hoarding by everyone, resulting in lack of liquidity in the market and eventually economic contraction;
5. The transfer is time-consuming and requires a handling fee;
6. Transaction concurrency capacity is limited.

1、 Cold wallets and hot wallets have different functions. The function of the cold wallet is to store bitcoin, while the function of the hot wallet is to use bitcoin.

2、 Cold wallets and hot wallets have different definitions. Cold wallet refers to the bitcoin storage technology developed and launched by blockchain digital asset storage solutions, while hot wallet refers to that users can use bitcoin on any browser and mobile device.
3、 Cold wallets and hot wallets have different network states. Generally, cold wallets do not allow the Internet to access the private key storage location, while hot wallets allow the Internet to access the private key storage location.
Bitcoin is characterized by decentralization, anonymity, can only be used in the digital world, does not belong to any country or financial institution, and is not subject to geographical restrictions. The holder can exchange it anywhere in the world. The tool to facilitate bitcoin transactions is the private key. Once the private key is leaked, bitcoin may be stolen.
Hackers can steal the private key when the holder is online, but they cannot steal the private key when not online. Therefore, for the security of bitcoin, the holder will store the private key in the cold wallet. However, cold wallets are not necessarily safe.
The notebook recording the private key can also be called a cold wallet. If the notebook is lost, bitcoin may be stolen. Bitcoin cannot and should not be used as currency in the market.

You may not know how to use bitcoin wallet. One feature of bitcoin wallet is that we don't need to go to real name authentication. We can trade without real name authentication. Friends who are interested in bitcoin wallet and don't know how to use it can come and have a look.

How to use bitcoin Wallet:
1. Introduction to bitcoin's official website (. ORG) -- Getting Started Guide
2. Select Wallet
3. Select the mouse to move to the first icon in the figure below, and then select download
4. Select the appropriate version to download
5. After downloading, unzip and then install. The most important thing is to scan the whole disk with anti-virus software! My wallet has been updated for five days, so I'm 30 weeks behind, usually more than 200 weeks
6. Wait for the wallet to synchronize the data packet of about 13g and download it to disk C. then there is experience to teach you how to put the data packet on another disk!!! After the anti-virus scanning is completed, let's encrypt the wallet!!! Select Settings - encrypted wallet,
7. If you choose to receive, you can know your unique wallet address. You can also create multiple wallet addresses. Finally, pay attention to backing up your wallet!!! The way to back up your wallet is to select files - just back up your wallet. You can back up anywhere. You'd better back up several more to different addresses, USB flash drives or something!!
Summary: the above is all the "how to use bitcoin wallet"?

Many friends haven't really owned bitcoin that belongs to them from the beginning... It's embarrassing to think about it.

Some people don't want to do it because they are lazy; And some people don't understand and are afraid that they can't do it well.
"How to make a cold wallet?" This problem has never stopped
Today, I will write an article to tell you the simplest way to make a cold wallet.
Three approaches:
1. Make a cold wallet with bitcoin core wallet.
Download the wallet address (bitcoin. ORG) and select bitcoin core wallet.
After the wallet is opened, it will actively look for nodes to download data. (some people say that you can find some downloaded synchronization packets. I think it's better to forget it here. I don't know what miscellaneous things some white players may download. When something goes wrong, it's trouble. After all, this kind of thing is slow. It's safe to be the first.)
Well, at this time, please unplug the network cable. (don't ask me why I unplug the Internet cable, I just don't say)
You don't have to wait for data synchronization. After you install it, just unplug the network cable. (it was not written in the article at the beginning. Please correct it directly here. Don't wait)
Find the following location and put the original wallet generated by the core wallet Delete dat file. The location is as follows:
Windows XP - C:\Documents and Settings\{username}\Application Data\Bitcoin\wallet. Dat (if you still use this system, I advise you... Don't store anything in it in the future, otherwise you will be forced by big loopholes)
Windows 7/8/10 - C:\Users\{username}\AppData\Roaming\Bitcoin\wallet. dat
Mac OS X ~/Library/Application Support/Bitcoin/wallet. dat
Linux ~/. bitcoin/wallet. Dat (I guess no one uses this system, mostly programmers)
After deleting the wallet, reopen the desktop interface of the core to generate a new wallet.
After the new wallet is generated, write down the address of the wallet and set the password (remember your password, and it's best to write it down in the notebook with a pen, otherwise you'll forget it, really and completely), and then go to the console to export the private key.
Open bitcoin QT client - help - console - enter walletpassphrase < password > 200 [if there is no password for wallet, this step can be omitted], and then perform the following operations:
Export private key: enter "dumpprivkey address (that is, your bitcoin address)".
Then, please write down the generated private key carefully and responsibly, case sensitive, 52 bit private key, count it clearly and understand it. If you copy wrong, don't come to me when you're finished.
Find two more USB flash drives, find the "backup" in the wallet and carefully save the wallet files. (why two? Because one is easy to lose... I suggest you get one more and put it in two very reliable places)
Well, when this work is finished, you can type money into it. You have your private key.
Then, press the path mentioned above and delete the wallet file. (don't ask me why I want to delete this backup wallet, I really don't want to explain)
If you like, it's safest to reinstall the system and format this computer.
Well, you can charge money into the address you wrote down later.
Someone asked, how can I change the money I want to give to others?
If you master the private key, you can import the private key with another wallet. Of course, you can also use the core wallet.
(1) Reinstall the core wallet, then install your backup wallet file back according to the original path and open it.
(2) Or you can create a new wallet and import your private key. The import method is as follows:
Open the bitcoin QT client - help - console - enter the importprivkey private key (the 52 you wrote down)
After importing, your new wallet also has coins. Call whoever you like.
However, most of this method will not be used, because the core wallet is too large, and more than 300 g is a headache. Maybe your computer hard disk is big enough, but synchronizing data may take several days (even if your network speed is fast, it is estimated that it will take at least half a day). Inconvenient, inconvenient.
Besides, are you sure your computer is really virus-free? It's really not safe to send bitcoin with a computer... All kinds of shit.
What's more, there is a problem that the core wallet has to back up the wallet file after 100 times... If you lose the coin, TM will suffer.
Next, let's talk about a more convenient way.
2. Generate cold wallets with Bitai wallets
Bitai wallet also has a computer version. I'm too lazy to say, and it is really related to the computer use environment. How can I feel that most people's computers are all kinds of wandering broilers in the eyes of many hackers
Say the mobile version of Bitai wallet.
Find an old mobile phone a, the best kind of camera you can use (you don't use it at ordinary times, of course, don't be too old, Nokia brick machine can't), and download it more than a wallet. Please confirm the official website address: bitpie COM, don't download from anywhere else.
After downloading, please unplug the SIM card of this mobile phone, turn off WiFi and Bluetooth, in a word, everything connected to the outside.
Open Bitai's wallet.
Select "cold wallet" mode. Next, create your new wallet.
Select to generate the private key wallet. The following notes are useful to note the requirements of the private key, which is 52 characters; Some people are willing to choose HD wallet. The secret language of HD wallet is twelve words. People who are more official explain that in fact, the security of the two methods is almost the same, which one they like to use. I used the single private key mode.
After generation, set your password. Then please take out your little notebook and carefully remember the private key. Long press. Note that long press. Long press the button of the small lock to display the private key. (remember your password and private key! Remember your password and private key! Remember your password and private key!)
When it's done, it's best to never connect to the Internet for this mobile phone in the future!
How about issuing money out? Install Bitai wallet on your other commonly used mobile phone B, and then select "one key monitoring cold wallet".
There is also a QR code for monitoring on the cold wallet on your old mobile phone a.
After monitoring, you can issue coins with a hot wallet.
If you click the mobile phone B with the hot wallet to send, it will generate a QR code, and then use the mobile phone a with the cold wallet to scan and generate a signed transaction. If you click the signed transaction with the cold wallet, it will also generate a QR code, and then use the mobile phone a with the hot wallet to scan, and the transaction will be broadcast.
In this way, the cold wallet can never touch the net. (at this point, you can try it yourself. It's very simple and easy. Don't wait to open your mouth and fill in...)
3. Making electric cold Wallet
In fact, the above two methods still have some shortcomings.
The core wallet is too big, but there is also a problem with Bitai wallet. The handling fee is a little high (this is relatively high. The handling fee set as the lowest 0.01mbtc is actually equivalent to about 70 cents. 70 cents... Cough)
Electrom can achieve 7 points or even 3 points or even lower.
If you have an old computer that you don't use, you can use the old computer to make an electric cold wallet.
Production method: download the electronic client, and pay attention to the official website electronic Org download. (but you should also be careful. Electrom has been hanged by hackers for several times. You'd better be careful. According to electrom, please verify the client with GPG signature to ensure security
After downloading, please unplug the network cable. (don't ask me why I unplug the Internet cable, I just don't say)
Installation.
After installation, create a new wallet. Choose a standard wallet. (if you're Xiaobai, don't wave. Some exchanges don't support isolation witness; you don't need multiple signatures)
Then, select create new seed cipher.
After generation, set your password. Then please take out your little book and carefully remember the secret words. (remember your password and password! Remember your password and password! Remember your password and password!)
After that, a wallet is generated.
Copy the address of your wallet.
You can type money for this address.
Reminder: this computer had better not be connected to the Internet in the future. I sincerely suggest, otherwise it is called a cold wallet.
Then, on the other computer, install electromagnet. Create a new wallet and select "import bitcoin address or private key".
Paste in the wallet address you copied before and it will become a wallet for monitoring.
Next, you can send money with your monitoring wallet. Send it to whoever you like. The cost can be adjusted to the lowest, and there is no limit to saving money. Of course, it will be very slow to confirm, but it is a real saving.
Monitoring your wallet will ask you questions and say, "I don't have any money here. Are you sure you want to send it?"?
Just confirm and export the sending information. This is the following. After you save it, an unsigned confirmation file of "unsigned. TxN" will be generated. (the following figure is older. Now there are four loading forms, namely "TxN file, text, blockchain and QR code". You can try other types, which are also very interesting.)
Then, you copy this file to the USB flash drive. (please choose a clean USB flash disk to do this, or you will be in trouble if you are attacked.). Plug it into your cold wallet computer to load the transaction. Click: Tools - load transaction.
After loading, another TxN file will be generated, and then copy the newly generated TxN file to your monitoring wallet.
Select: tool - load transaction
Then click: broadcast.
Your transaction will be sent out, so that you can keep your wallet from touching the Internet.
Well, the three methods of cold wallet have been taught. It depends on how you try.

The one that synchronizes a large amount of data is called the all node wallet. You have to download the records of the whole blockchain. Those who do not need to download node data are called light wallets. The wallet service provider downloads all the data. Customers do not need to download, but only need to communicate with the data of the wallet server. Of course, your communication with the wallet server is also public key communication and digital signature authorization, and the private key is not circulating. If you generate a private key yourself, you can generate a public key by algorithm. You're right. If you have a public key, you can receive others to transfer money to you. You can collect money unilaterally. With a public key on the blockchain, you can see the balance, transfer records and other information as soon as you query. If you have a wallet, the balance will be displayed by yourself. The above operation does not involve the private key at all. Cold wallet is a private key that never touches the Internet. It says that you can collect money with a public key, but what if you want to give money to others? That's when we need to go. You only need the cold wallet to authorize the digital signature of the corresponding hot wallet. The private key is locally, such as the device of the cold wallet. After complex mathematical calculation, it becomes an irreversible digital signature form. Then the cold wallet scans the QR code generated by the hot wallet and authorizes the signature. In this process, the private key is not transferred, and the hot wallet has the ability to transfer money once. This is the general operation method that the private key of the cold wallet will never be connected to the Internet. I won't say more about it.

Huo Coin Wallet is a light wallet app launched by Huo coin pro, a famous exchange. It is similar to imtoken and other digital currency wallets. Because of the recent Huo coin heco public chain fire, many friends have begun to use Huo Coin Wallet. This article 51 coin will give you a basic tutorial on the use of Huo Coin Wallet, such as how to reset and withdraw money.

How to use fire Coin Wallet? Fire Coin Wallet withdrawal, recharge and transfer tutorial (1)
How to download fire Coin Wallet?
You can download it directly on the official website of huocoin wallet. Download address: https://www.huobiwallet.com/
How does Huo Coin Wallet create an account?
Click "wallet" - "create wallet" on the Huo Coin Wallet app to select the type of wallet you want to create. Note: Huo Coin Wallet is a Multi Chain Wallet that supports a variety of blockchains, including BTC, ETH, heco, EOS, XRP, etc. you can choose according to your own needs or create multiple at one time! For example, if you want to play heco's defi project or use your wallet to save HT, choose heco
How to use fire Coin Wallet? Fire Coin Wallet withdrawal, recharge and transfer tutorial (2)
After the wallet is created, you will be prompted to back up the mnemonic words of the wallet. Be sure to back up them. Mnemonic words can be saved by hand copying, photographing, etc! Mnemonic words are very important. If you forget your wallet password, change your mobile phone and reinstall your app, you need mnemonic words to retrieve your wallet. If you lose mnemonic words, it is equivalent to the loss of wallet assets
How to transfer money, withdraw money to the exchange and recharge the fire Coin Wallet?
1, transfer: click on the "wallet" to choose the currency to transfer, for example, to transfer to others HT, click on "HT" - "transfer", transfer amount column to fill in the amount of transfer you want, for example, you have to transfer 10 Kwai HT to others, write 10, receive address column to fill out the other party's collection address, miners fees according to their needs, the faster the higher the fee.
If you want to withdraw money from the Huo Coin Wallet to the exchange, you can also use the transfer method. Find the coin you want to recharge in the "assets" of the exchange (such as Huo coin), such as HT, click enter, click "recharge" and select "heco" to obtain a QR code and address, copy this address, and fill in the recharge address when the Huo Coin Wallet transfers
Special note: the currency blockchain should correspond to the wallet. For example, your fire Coin Wallet is an eth wallet, which should be transferred from eth wallet to usdt to the exchange. After the exchange selects "recharge", the address should select "erc20 (Ethereum)", and other public chains cannot be selected, otherwise the transaction will fail
How to use fire Coin Wallet? Fire Coin Wallet withdrawal, recharge and transfer tutorial (3)
2. Withdraw money from the exchange to the wallet
In fact, the transfer process is similar to that above. For example, if you want to transfer 100 HT from huocoin exchange to huocoin wallet, first create heco wallet in huocoin wallet, and then find "HT" in "wallet" of huocoin wallet and click to enter (you can add currency without clicking the + sign in the upper right corner)
After entering, there is a long string of numbers + English things above the transfer and collection. This is your wallet address. Click to copy this address
Open the app of Huo coin exchange, click "asset" to find the currency "HT", click to enter, select the name of the "coin withdrawal" chain, select "heco", paste the wallet address just copied at the coin withdrawal address, fill in the quantity according to your own needs, and then withdraw the coin. The coin withdrawal usually arrives within 1 hour, or a few hours later
How to use fire Coin Wallet? Fire Coin Wallet withdrawal, recharge and transfer tutorial (4)
How do I check the wallet address?
As we said earlier, Huo coin is a Multi Chain Wallet. Suppose you create BTC and eth wallets, because the blockchains of the two currencies are different, the wallet addresses must be different! This needs attention
We open Huo Coin Wallet, click "wallet" and select the currency in which you want to view the wallet address. For example, if you want to see the BTC wallet address of your Huo Coin Wallet, select the currency "BTC" and click to enter. The address is below the account balance and above the transfer and collection.
How to retrieve the security password of fire Coin Wallet?
We must enter a set security password when transferring and trading in Huo Coin Wallet. If we forget this security password, how can we get it back? Very simple. First of all, you should make sure that you have backed up the wallet mnemonic words. If you have backed up, directly delete the Huo Coin Wallet app and download it again
After downloading and installing, you can reset the security password. After setting, you will be prompted to create a wallet. We can directly select "import wallet" and enter the mnemonic of the backup number to retrieve the original wallet

This article mainly introduces how to withdraw BTC currency from otcbtc account to currency security account. Withdrawing currency from other currencies to currency security (or other exchanges) is also a similar step.

Step1.  Open otcbtc "my wallet" and find BTC currency; Open the "my assets" page of currency security to find BTC currency
Currency withdrawal button of BTC in otcbtc account
Recharge button of BTC in currency security account
Step2.  Copy the BTC recharge address of coin security; Create a withdrawal address in otcbtc (paste the recharge address of coin security)
Click the "copy address" button on the BTC recharging interface of coin security, and a "success" reminder will pop up, indicating that you have successfully copied your BTC recharging address in coin security.
Go back to the BTC withdrawal page of otcbtc account and click the "new address" button
Enter the "address description" (please fill in your remarks for the address description, so that you can easily distinguish which exchange or wallet this withdrawal address is transferred to. For example, here is the withdrawal to coin security, so fill in coin security directly)
Paste the "currency withdrawal address" (in the previous step, the currency security BTC recharge address copied from the currency security to the clipboard), check the confirmation information, and click the "create" button to complete the creation of the currency withdrawal address
Step3.  Initiate withdrawal
Click the "withdrawal" button on the newly established withdrawal address
Enter the withdrawal quantity and withdrawal remarks (please fill in the summary for you to identify this withdrawal)
Enter Google two-step verification code or SMS verification code
Check the confirmation information and click the "submit" button
After clicking the "submit" button, the system will prompt you to confirm again in the email, and click the "I see" button
Step4.  Confirm withdrawal
Open the email and check the confirmation email
(email Title: [otcbtc] you have applied for a withrawal request.)
Click the "confirm" link in the email, and you will jump to the cash withdrawal confirmation page. If there is no response or error when clicking the link, please copy the long string of website to confirm the cash withdrawal in the email and open it in the browser
On the currency withdrawal confirmation page,
After confirming that the number and address of currency withdrawal are correct, click the "confirm currency withdrawal" button.
If you find that the withdrawal address is inconsistent with your recharge address in coin security, or the amount of withdrawal is wrong, please click the "cancel withdrawal" button
After clicking the "confirm withdrawal" button, the following pop-up window will appear, and click the "OK" button
A green prompt appears on the page, as follows:
In the currency withdrawal history, you can view the status of the currency withdrawal (being processed / completed).
You can click the "view details" button to view the transaction hash of this withdrawal. Through the transaction hash, you can understand the status of withdrawal on the blockchain.
Step5.  Check the recharge status in coin security
After waiting for a period of time, return to the "recharge" page of coin security. You can see that the note is in the status to be confirmed in the recent recharge record. When the confirmation number reaches 1, it will be displayed as successful.
The status after successful recharge is shown in the following figure
Congratulations! You have completed the from otcbtc to BTC to coin security

The wallet file of bitcoin QT client downloaded from bitcoin investment service platform is wallet DAT, the wallet file of the multibit client is multibit Wallet, the file name, size and format of these two files are different, so how to switch? If you don't need to save the original address, it's the most convenient way to send the coin directly to the address of multibit. If you need to keep the original address, you can export import the private key as follows: 1 Open the bitcoin QT client, find the address where you save money (you may have multiple addresses, find the one with money), and right-click copy; 2. Open help - debugging window - console in turn, enter the command dumpprivkey (space), paste the address just copied, and press enter; 3. Now you should be able to see your private key. It is a string of 52 characters. Copy it; 4. Open multibit. If you don't have any money here, select tools - export private key, select the path, select no encryption, and click export private key; 5. Open the just exported with Notepad Key file, which stores the private key you just exported (the line beginning with # is a comment). Replace this private key with the one you just copied. You can stay still for the next time and exit after saving; 6. Click Tools - Import private key and select the one just modified Key file, import; 7. After a short update, you should be able to see the original address imported and your balance in the original address. Reminder: 1 Be sure not to disclose your private key. Once you know the private key, you can control the bitcoin in the corresponding address! 2. Other clients, such as electromagnet and armory, can import and export in a similar way, but the format of the private key has 51 bits and 52 bits, which may not be universal.

Only full node clients like bitcoin core need a long synchronization time. Technically, synchronization is a process of downloading and verifying all previous bitcoin transactions on the network. Some bitcoin clients need to know all previous transactions to calculate the available balance of your bitcoin wallet and complete new transactions. This step is very resource consuming and requires sufficient bandwidth and space to store the whole block chain. In order to maintain the security of bitcoin, enough users need to use full node clients, because they play the role of confirming and relaying transactions.

An error occurred, which may be disconnected or incompatible. Just update it again. In fact, the online money bag technology has developed quite mature. It's better to put bitcoin in your online wallet than on your own computer. Of course, if you are a technology flow, you can go anywhere.

First of all, let's talk about the background. The basic principle of bitcoin "account" is key public key address. You can roughly understand it as "key box box number". Now is to start with the box number or the box to crack the key. There are basically two kinds of attack methods: one is dictionary attack on the so-called brain wallet, and the other is violent cracking. Dictionary attack is to try the combination of commonly used passwords and their simple variants as keys one by one. As long as your pass phrase is not hard, this method is highly likely to succeed. So if you want to use this, you need to popularize the knowledge of cryptography first. Don't think that the password is very long and then add a & it's very safe. If you don't use the wallet generated by pass phrase, you can only crack it violently, which is equivalent to enumerating all possible keys. At present, this is impossible, even if the electronic computer is becoming more and more powerful. However, quantum computers can be done in theory, but don't worry too much. If such a powerful quantum computer comes out, it will not only endanger bitcoin. At the same time, bitcoin has a second layer of protection: if an address only accepts and does not output bitcoin, its public key is confidential, that is, no one else can see the box, but only the box number. At present, even the quantum computer can't deduce the box from the box number. In other words, if there is a quantum computer, bitcoin has a last line of Defense: it is temporarily safe to transfer your money to a new address. Finally, some time ago, the wallet generated by the client on Android was attacked because of a bug in the underlying random number generator. In fact, this function is not random securerandom, and Google quickly acknowledged and fixed this problem. It's hard to say whether this kind of thing will happen again, but I don't think I need to worry too much.

Bitcoin was successfully split this evening. At the block height of 478559, the blocks continued by subsequent bitcoin (BTC) nodes will not be accepted by bitcash (BCC) nodes and will be officially separated. But so far, bit cash (BCC) has not produced a block.

Now how to query your BCC balance?
Chapter 1 bit cash (BCC) blockchain browser
Here is a BCC block browser
https://blockchair.com/bitcoin-cash/blocks
However, it's very bad and unstable. It takes more than ten minutes to query an address, which is often impossible to find. Need to wait patiently.
You can now take an address to send a bitcoin (BTC) transaction, which is very small, and then go to the bitcoin (BTC) block browser respectively（ http://www.blockchain.info ）Check with the BCC block browser above. You will find that the bitcoin (BTC) balance of your address is less, but the BCC balance is not less.
Or you can go to the current bitcoin blockchain browser to find a transaction, copy an address (input or output is OK), and then go to the BCC blockchain browser to query, and you will find that the query result is different from that in the bitcoin (BTC) blockchain browser.
Chapter 2 download a BCC wallet and import the private key
In order to find out how many BCC coins are in your address, you can also download a BCC wallet and import the private key.
However, no BCC light wallet has been found at present, only the complete node wallet. Therefore, in order to see the balance, you have to synchronize the block. This is already 126G data, which is very large.
Download wallet the following website:
These four wallets are useful, and the others are useless at present.

From the perspective of users, a bitcoin wallet seems to be able to generate a new address at any time. Does it cost to generate a new address?

The bitcoin private key can represent a wide range. It is fast to access the atomic level that human beings can touch. Therefore, it is basically inexhaustible.
From my personal understanding, wallet can change from simple to complex.
1. A simple wallet can generate a private key through a random number, and then generate an external address to the user. The wallet only needs to simply manage the private key.
2. User password wallet. If the user is not allowed to enter the password set by himself, it is estimated that the user does not believe that it is his own wallet. Therefore, the user needs to set the password and encrypt the original private key of the simple wallet in 1. Here, the wallet only needs to manage the encrypted private key.
3. For multi-level wallets, if the user keeps producing addresses in the wallet, then for each address generated, a private key needs to be produced and saved. If the user generates 10 addresses, there are 10 independent private keys that need to be managed, and the user needs to manage and back up these 10 private keys. Therefore, a multi-level wallet system is produced, that is, after the first address is generated, the subsequent private key can be obtained by adding chain code and index to the first private key through Sha operation, and then analogously, which can be generated by the father, son and grandson. Externally, these addresses are independent of each other and have nothing to do with each other. Internally, to restore the whole wallet structure, only the information of one parent node is needed, and all children's wallets can be recovered. This has advantages and disadvantages.
4. Paper backup
The bitcoin address can be generated offline. Therefore, when the network is completely disconnected, a private key can be generated, then backed up, and then the external bitcoin address can be generated. In this way, the private key has never appeared on the network. When bitcoin needs to be stored, just transfer in to this address. Until one day when it needs to be extracted, import it into a wallet through USB flash disk or other methods, and then transfer it. When it is recommended to transfer a large amount of money, in addition to what is used, the rest can be transferred to the next wallet address generated offline for saving to ensure security.

Many people have invested in bitcoin, but many people find that bitcoin has been frozen after investing in bitcoin. They can't thaw it for a time and don't know how to solve it. Let's tell you what to do if bitcoin is frozen.

1. If your money is in a centralized wallet, if it is frozen, it is likely that the wallet has run away. In this case, you should call the police immediately before you can recover the assets.
2. If your coin is a decentralized wallet or hardware wallet, as long as you remember the help word or private key, bitcoin will not be frozen or lost.
3. If your currency is stored in the exchange and then frozen, it may be because the risk control rules of the platform, such as XQ, are triggered, so you can't withdraw your currency normally. At this time, you should explain the situation to the customer service personnel, and then cooperate with the customer service to provide relevant materials for thawing, or the exchange may run away and fail to complete the cashing, resulting in freezing. At this time, it is recommended that you call the police immediately.

Buyers of bitcoin wallets usually give priority to their list: security. What is the truth about wallet security?

When buying traditional wallet coins and notes, people usually give priority to characteristics such as size, color, shape and number of compartments.
However, buyers of bitcoin wallets - software programs that help store someone's cryptocurrency related wealth - often give priority to their list: security.
Therefore, the companies behind these wallets wisely emphasize why their products are safer than those provided by their competitors and why. However, in addition to the marketing language, what is the truth about the security of these wallets?
Crypto experts say it is impossible to guess the key of a personal bitcoin wallet
When considering the possibility of what might happen, people will appreciate comparison. Brian Liotti of crypto aquarium found this in his research and found that guessing the bitcoin key of a wallet is the same as winning Powerball nine times in a row.
Therefore, for those who use digital methods to store their cryptocurrency investments, this is undoubtedly gratifying.
The wallet owner was locked in a few months
There is also a detailed description of mark Frauenfelder, who owns a trezor wallet and can't access it for months after he mistakenly placed the pin as a software recovery word. His tragic story proved that hackers could not contact the bitcoin wallet manufacturer, disguised as the wallet owner and obtained goods to enter.
A teenage hacker hacked into the tamper proof wallet
Ledger is a French company that sells bitcoin wallets. When a British teenager disclosed a proof of concept and let him break into ledger nano s, he found that he had received unnecessary publicity. Ledger nano s is the wallet that the company claims to be unshakable. Hackers mainly focus on the microcontroller of the device.
One stores the private key of the wallet and the other acts as a proxy. It is reported that the proxy microcontroller is very insecure and cannot distinguish between real firmware and firmware created by cybercriminals.
This case study, as well as other case studies with insufficient relevance to bitcoin wallets, emphasizes that people should not be too comfortable after buying bitcoin wallets, even if they are considered to be one of the best bitcoins. The same is true for storing other types of funds: following best practices is always the ideal approach.
If one owns collector coins, one must learn how to protect them from potential damage - such as extreme temperature, acid and humidity. Although they exist in the network field, bitcoin needs to protect its hackers, especially if even the most technologically advanced options show that they need to be improved.
The so-called McAfee e-wallet intrusion
The bitfi bitcoin wallet, supported by network security director John McAfee, provides a $250000 bonus to anyone who can successfully crack it. Moreover, in August 2018, a security research company called oversoft NL claimed success. The company behind the wallet then issued a second bonus to try to find out the weakness.
Because participants must abide by the company's rules, people in the cyber security department are frustrated with the reward. In other words, if cyber security experts attack the wallet in a way not specified by the company, they will not win the reward.
However, attacks performed by malicious players never seem to follow these parameters. Often, they involve unusual ways to exploit vulnerabilities that manufacturers have never understood. Others said they had broken their wallet before oversoft NL, but it did not meet the company's regulations.
Even representatives from cyber security companies expressed doubts about the money they actually received, believing that the money was just a marketing strategy. Since then, the bounty program has stopped and the company has promised to launch another program soon.
Marketing language can attract hackers
Whenever something in the technology industry is considered impermeable, ethical and malicious hackers often see a challenge trying to prove otherwise.
Just as John McAfee talked about his wallet on twitter, This tone can easily make people overconfident and arrogant: "for those who claim that" nothing is unshakable "and don't believe that my bitfi wallet is really the first unshakable person in the world, the device, a $100000 reward to anyone who can crack it..." in fact, the hacker began to work and accepted the challenge.
Cryptocurrency wallet owners should not be too careful
Although the research we see here shows that bitcoin wallet hackers are unlikely, and the wallet owner himself cannot even get his funds after losing his pin, the case study shows that hackers are still possible.
People should always fully study the security measures in personal wallets, but they should also use them intelligently by following good network security habits and never assuming that wallets cannot be attacked by hackers.

Many friends haven't really owned bitcoin that belongs to them from the beginning... It's embarrassing to think about it.
Some people don't want to do it because they are lazy; And some people don't understand and are afraid that they can't do it well.
"How to make a cold wallet?" This problem has never stopped

Today, I will write an article to tell you the simplest way to make a cold wallet.

Three approaches:
1. Make a cold wallet with bitcoin core wallet.
Download the wallet address (bitcoin. ORG) and select bitcoin core wallet.
After the wallet is opened, it will actively look for nodes to download data. (some people say that you can find some downloaded synchronization packets. I think it's better to forget it here. I don't know what miscellaneous things some white players may download. When something goes wrong, it's trouble. After all, this kind of thing is slow. It's safe to be the first.)
Well, at this time, please unplug the network cable. (don't ask me why I unplug the Internet cable, I just don't say)
Don't wait for data synchronization. After you install it, just unplug the network cable. (it was not written in the article at the beginning. Please correct it directly here. Don't wait)
Find the following location and put the original wallet generated by the core wallet Delete dat file. The location is as follows:
Windows XP - C:\Documents and Settings\{username}\Application Data\Bitcoin\wallet. Dat (if you still use this system, I advise you... Don't store anything in it in the future, otherwise you will be forced by big loopholes)
Windows 7/8/10 - C:\Users\{username}\AppData\Roaming\Bitcoin\wallet. dat
Mac OS X ~/Library/Application Support/Bitcoin/wallet. dat
Linux ~/. bitcoin/wallet. Dat (I guess no one uses this system, mostly programmers)
After deleting the wallet, reopen the desktop interface of the core to generate a new wallet.
After the new wallet is generated, write down the address of the wallet and set the password (remember your password, and it's best to write it down in the notebook with a pen, otherwise you'll forget it, really and completely), and then go to the console to export the private key.
Open bitcoin QT client - help - console - enter walletpassphrase < password > 200 [if there is no password for wallet, this step can be omitted], and then perform the following operations:
Export private key: enter "dumpprivkey address (that is, your bitcoin address)".
Then, please write down the generated private key carefully and responsibly, case sensitive, 52 bit private key, count it clearly and understand it. If you copy wrong, don't come to me when you're finished.
Find two more USB flash drives, find the "backup" in the wallet and carefully save the wallet files. (why two? Because one is easy to lose... I suggest you get one more and put it in two very reliable places)
Well, when this work is finished, you can type money into it. You have your private key.
Then, press the path mentioned above and delete the wallet file. (don't ask me why I want to delete this backup wallet, I really don't want to explain)
If you like, it's safest to reinstall the system and format this computer.
Well, you can charge money into the address you wrote down later.
Someone asked, how can I change the money I want to give to others?
If you master the private key, you can import the private key with another wallet. Of course, you can also use the core wallet.
(1) Reinstall the core wallet, then install your backup wallet file back according to the original path and open it.
(2) Or you can create a new wallet and import your private key. The import method is as follows:
Open the bitcoin QT client - help - console - enter the importprivkey private key (the 52 you wrote down)
I'll call anyone who has new money in my wallet.
However, most of this method will not be used, because the core wallet is too large, and more than 300 g is a headache. Maybe your computer hard disk is big enough, but synchronizing data may take several days (even if your network speed is fast, it is estimated that it will take at least half a day). Inconvenient, inconvenient.
Besides, are you sure your computer is really virus-free? It's really not safe to send bitcoin with a computer... All kinds of shit.
What's more, there is a problem that the core wallet has to back up the wallet file after 100 times... If you lose the coin, TM will suffer.
Next, let's talk about a more convenient way.
2. Generate cold wallets with Bitai wallets
Bitai wallet also has a computer version. I'm too lazy to say, and it is really related to the computer use environment. How can I feel that most people's computers are all kinds of wandering broilers in the eyes of many hackers
Say the mobile version of Bitai wallet.
Find an old mobile phone a, the best kind of camera you can use (you don't use it at ordinary times, of course, don't be too old, Nokia brick machine can't), and download it more than a wallet. Please confirm the official website address: bitpie COM, don't download from anywhere else.
After downloading, please unplug the SIM card of this mobile phone, turn off WiFi and Bluetooth, in a word, everything connected to the outside.
Open Bitai's wallet.
Select "cold wallet" mode. Next, create your new wallet.
Select to generate the private key wallet. The following notes are useful to note the requirements of the private key, which is 52 characters; Some people are willing to choose HD wallet. The secret language of HD wallet is twelve words. People who are more official explain that in fact, the security of the two methods is almost the same, which one they like to use. I used the single private key mode.
After generation, set your password. Then please take out your little notebook and carefully remember the private key. Long press. Note that long press. Long press the button of the small lock to display the private key. (remember your password and private key! Remember your password and private key! Remember your password and private key!)
When it's done, it's best to never connect to the Internet for this mobile phone in the future!
How about issuing money out? Install Bitai wallet on your other commonly used mobile phone B, and then select "one key monitoring cold wallet".
There is also a QR code for monitoring on the cold wallet on your old mobile phone a.
After monitoring, you can issue coins with a hot wallet.
If you click the mobile phone B with the hot wallet to send, it will generate a QR code, and then use the mobile phone a with the cold wallet to scan and generate a signed transaction. If you click the signed transaction with the cold wallet, it will also generate a QR code, and then use the mobile phone a with the hot wallet to scan, and the transaction will be broadcast.
In this way, the cold wallet can never touch the net. (at this point, you can try it yourself. It's very simple and easy. Don't wait to open your mouth and fill in...)
3. Making electric cold Wallet
In fact, the above two methods still have some shortcomings.
The core wallet is too big, but there is also a problem with Bitai wallet. The handling fee is a little high (this is relatively high. The handling fee set as the lowest 0.01mbtc is actually equivalent to about 70 cents. 70 cents... Cough)
Electrom can achieve 7 points or even 3 points or even lower.
If you have an old computer that you don't use, you can use the old computer to make an electric cold wallet.
Production method: download the electronic client, and pay attention to the official website electronic Org download. (but you should also be careful. Electrom has been hanged by hackers several times. You'd better be careful. According to electrom, please verify the client with GPG signature to ensure security. Don't write it today, because it's a little cumbersome. There are step-by-step instructions on the official website, but they are all in English.)
After downloading, please unplug the network cable. (don't ask me why I unplug the Internet cable, I just don't say)
Installation.
After installation, create a new wallet. Choose a standard wallet. (if you're Xiaobai, don't wave. Some exchanges don't support isolation witness; you don't need multiple signatures)
Then, select create new seed cipher.
After generation, set your password. Then please take out your little book and carefully remember the secret words. (remember your password and password! Remember your password and password! Remember your password and password!)
After that, a wallet is generated.
Copy the address of your wallet.
You can type money for this address.
Reminder: this computer had better not be connected to the Internet in the future. I sincerely suggest, otherwise it is called a cold wallet.
Install electric on another computer. Create a new wallet and select "import bitcoin address or private key".
Paste in the wallet address you copied before and it will become a wallet for monitoring.
Next, you can send money with your monitoring wallet. Send it to whoever you like. The cost can be adjusted to the lowest, and there is no limit to saving money. Of course, it will be very slow to confirm, but it is a real saving.
Monitoring your wallet will ask you questions and say, "I don't have any money here. Are you sure you want to send it?"?
Just confirm and export the sending information. This is the following. After you save it, an unsigned confirmation file of "unsigned. TxN" will be generated. (the following figure is older. Now there are four loading forms, namely "TxN file, text, blockchain and QR code". You can try other types, which are also very interesting.)
Then, you copy this file to the USB flash drive. (please choose a clean USB flash disk to do this, or you will be in trouble if you are attacked.). Plug it into your cold wallet computer to load the transaction. Click: Tools - load transaction.
After loading, another TxN file will be generated, and then copy the newly generated TxN file to your monitoring wallet.
Select: tool - load transaction
Then click: broadcast.
Your transaction will be sent out, so that you can keep your wallet from touching the Internet.
Well, the three methods of cold wallet have been taught. It depends on how you try.

In the currency circle, investors who have contact with digital currency wallets have heard of the professional digital currency wallet imtoken wallet, which supports multi chain and multi currency management and exchange. At present, they have completed the a-round investment of imtoken wallet, so there are still many investors who choose imtoken wallet to store digital currency. As we all know, not all digital currency wallets can store bitcoin, So everyone who chose the imtoken wallet wants to know whether the imtoken wallet can store bitcoin? The following is a small series of imtoken's official website. Let's give you a detailed introduction. Can imtoken wallet store bitcoin?
Can imtoken wallet store bitcoin? How much can I save?

An imtoken wallet can store bitcoin. Imtoken now supports four chains: BTC, ETH, EOS and cosmos, so you can see four wallets in imtoken.

BTC wallet can store two currencies BTC and omniusdt.
Eth wallet can store eth, erc20 standard tokens and erc721 standard tokens.
EOS wallet can store tokens on EOS and EOS chain.
Can imtoken buy bitcoin?
Cosmos wallet can store atom.
Is imtoken wallet really suitable for saving money?
Mtoken was founded in March 2016. As of October 2018, imtoken has more than 7 million users in more than 200 countries and regions in the world. Of course, imtoken has a great foundation on the client, but as a decentralized digital wallet, is imtoken really completely decentralized? Can you really store digital currency with confidence?
As we all know, in a world of virtual currency, your assets are stored on the blockchain. What exactly exists in the blockchain? The real existence in the wallet is the key corresponding to your account. With this key, you can prove your identity in the virtual currency world and change the account status (transfer / transaction). In this case, virtualkeys is actually a tool for managing and storing keys. The key is a private key, while the wallet address is derived from the public key.
Imtoken is a decentralized digital currency wallet. It will not store any sensitive information from the server (how does this prove? No one knows). Keys and mnemonics only exist on the user's own mobile phone, and are not uploaded to imtoken's server. Moreover, cloud synchronization function such as icloud (we can rest assured) is a default setting, such as icloud, It only exists on the user's own mobile phone. In addition, the core operations of users can also be completed by themselves, such as wallet generation, import, key storage, mnemonic word backup, transfer, etc., without interaction with imtoken server.
Is there anything about bitcoin that can be stored in imtoken wallet? Finally, the editor of imtoken's official website suggests that investors who hold a lot of cash or who do not trade frequently for long-term investment need to choose a professional hardware cold storage. Naturally, you can also configure a cold wallet, but this requires some professional knowledge. For short-term investors, due to the need for frequent transactions, Therefore, you can choose the exchange wallet, which makes the transaction more convenient, and reduces the repeated recharge, withdrawal and mining costs.

How imtoken switches between BTC wallet and isolated witness address.

Imtoken's BTC wallet supports two forms of addresses: ordinary address and independent witness address (segwit).
When inputting BTC wallet, you can select the imported address format. After importing the wallet, you can also switch the wallet address according to the actual use needs.
Operation steps:
How does imtoken switch addresses?
1. Open imtoken software, enter the asset page, and click on Button to enter the wallet management interface.
2. Click "switch address type"
3. Select normal and enter the wallet password.
4. Convert the wallet address to a normal address starting from 1.
be careful:
1. When isolating the witness address transfer, the miner's fee is lower than the normal address transfer.
2. The assets at the common address and the isolated witness address are not interconnected with each other, and the transfer is sent to facilitate the transfer of assets.

BTC. ETH. What does usdt mean?

The US dollar equivalent of BTH is the US dollar equivalent of teh.

What is the difference between bitcoin and usdt?

Are BTC and usdt wallet addresses the same

1. The concept of bitcoin was first proposed by Nakamoto on November 1, 2008 and officially born on January 3, 2009. According to Nakamoto's idea, the construction of open source software and P2P network. Bitcoin is a virtual encrypted digital currency in the form of P2P. Point to point transmission means a decentralized payment system.

Unlike all currencies, bitcoin does not rely on specific monetary institutions. It is based on specific algorithms. Through a large number of calculations, bitcoin economy uses many nodes composed of distributed databases to confirm and record all transaction behaviors in the whole P2P network, and uses password design to ensure the security of money circulation. The decentralized characteristics of P2P and the algorithm itself can ensure that bitcoin cannot manually control the monetary value through a large number of bitcoins. Cryptography based design can only be transferred or paid by the real owner. This also ensures the anonymity of money ownership and circulation transactions. The biggest difference between bitcoin and other virtual currencies is that its total number is very limited and very scarce.

2. TEDA coin (usdt) is a token based on the stable value currency US dollar (USD) launched by tether (hereinafter referred to as usdt). 1usdt = US $1. Users can use usdt to exchange with usd1:1 at any time. Tether strictly abides by the 1:1 reserve guarantee, that is, for each usdt token issued, its bank account will have a capital guarantee of US $1. Users can query funds on the tether platform to ensure transparency.

TEDA currency is a virtual currency that links cryptocurrency with legal tender dollar. Each TEDA coin is symbolically linked to the legal tender supported by the government. TEDA currency is a virtual currency, which is kept in the foreign exchange reserve account. Get legal tender support. This method can effectively prevent the price fluctuation of cryptocurrency. Basically, the value of TEDA currency is equal to one dollar.

Response time: 2021-02-05, please refer to the latest business changes announced on the official website of Ping An Bank.

[I know Ping An Bank] want to know more? Let's see. I know Ping An Bank ~.

What's the use of usdt in huocoin?

It's your wallet address. Transfer the bitcoin in your account to your wallet.

one

Extract bitcoin. Transfer directly to your bitcoin account.

two

Draw legal tender. Bind the bank to open and sell bitcoin.

What is the difference between usdt transaction and BTC transaction?

1. TEDA currency (usdt) is a virtual currency that links cryptocurrency to the legal tender US dollar. It is a virtual currency kept in the foreign exchange reserve account and supported by legal tender.

2. Contract trading is the general name of bitcoin Wright coin futures contract trading.

Warm tips: ① the above contents are for reference only, without any suggestions. Relevant products are issued and managed by corresponding platforms or companies, and our bank does not bear the responsibility of product investment, payment and risk management. ② There are risks in the market and investment needs to be cautious. Before making any investment, you should ensure that you fully understand the investment nature and risks involved in the product, and carefully understand and evaluate the product before judging whether you are involved in the transaction.

Response time: 2021-02-02, please refer to the latest business changes announced on the official website of Ping An Bank.

[I know Ping An Bank] want to know more? Let's see. I know Ping An Bank ~.

What is the address of BCH withdrawal

Different. These are two different currencies. The withdrawal address of BCH can be seen in the withdrawal.

BTC. USDT. ETH. BCH. What does LTC mean?

BTC. USDT. ETH. BCH. LTC means:

1.BTC

The concept of bitcoin was originally proposed by Nakamoto in 2009. According to Nakamoto's idea, it designs and releases open source software and establishes P2P network. Bitcoin is a P2P form of digital currency. Point to point transmission means a decentralized payment system.

2.USDT。

TEDA currency is a virtual currency that links cryptocurrency to legal tender US dollar. It is a virtual currency kept in the foreign exchange reserve account.

3.ETH

Ethereum is an open-source public blockchain platform with smart contract function. It provides decentralized Ethereum virtual machine to process point-to-point contracts through its special cryptocurrency ether.

4.BCH

Bitcoin cash is a new bitcoin with different configurations launched by a small number of bitcoin developers.

At 20:20 on August 1, 2017, bitcoin cash began to be mined, and bitcoin cash (BCH) equal to the number of bitcoins will appear on the account of each bitcoin investor.

5.LTC

Wright coin, abbreviation: LTC, currency symbol:; It is a network currency based on point-to-point technology and an open source software project under MIT / X11 license. It can help users pay anyone in the world immediately.

Reference source: Network - bitcoin.

Reference source: Internet - TEDA coin.

Reference source: Network - Ethereum.

Reference source: Network - bitcoin cash.

Reference source: Network - Wright coin.

Btcusd is different from btcusdtm.

The difference between Pitty hill and billteam is that there is an iron curtain.

What is the relationship between BTC and usdt on okex?

Okex has the right deal.

What do fire coin and bitcoin wallet mean?

Huocoin.com is a bitcoin trading platform. By the end of 2016, the cumulative turnover of huocoin had reached 2 trillion yuan.

Bitcoin is a virtual encrypted digital currency in the form of P2P.

Bitcoin is different from all currencies. Bitcoin does not depend on specific monetary institutions. According to specific algorithms and through a large number of calculations, bitcoin economy uses many node distributed databases of the whole P2P network to confirm and record all transaction behaviors, and uses password design to ensure the security of money circulation. The decentralization of P2P and the algorithm itself can ensure that bitcoin cannot be manufactured in large quantities.

(9) Expand the difference between usdt and BTC:

Huo coin network business

1. Huo coin global station, headquartered in Singapore, provides digital asset trading and investment services.

2. Based on the Korean won digital asset trading platform, Huo coin Korea provides digital asset trading services.

3. China has become a platform for information and research services in vertical chain of block chain, providing Chinese mainland users with information on R & D and application of block chain technology, integrating industry consulting, research, education and training services.

4. Huo Coin Wallet, headquartered in Beijing, China, provides digital asset management services and user experience.

The concept of cold wallet sounds high and simple.

In vernacular, in order to clarify several concepts:

The private key is a string of characters, which is your money.

Bitcoin address is the entrance to save money.

The essence of bitcoin wallet is a private key generator, which only has the transfer function of bitcoin.

As long as you have the private key in your hand, it doesn't matter what wallet you use. Because the private key is money, the wallet is just a tool.

So the key is to generate your private key, not what wallet to use.

When you generate bitcoin wallets, most of them are online.

The network means insecurity, which means that your private key is exposed on the network. How is there the risk of theft.

Cold storage is a way to ensure the security of encrypted currency by generating addresses offline, which means that it is almost impossible for private key hackers to crack.

Therefore, when using wallet software to generate private keys, two things should be paid attention to:

Ensure that the private key is generated offline and will never be exposed to the network.

Ensure that the software used to generate the private key is reliable and free of vulnerabilities.

How to accept bitcoin when the cold wallet is not connected to the Internet?



Here's the point. Let's move on to the theme:

1. If you have never connected to the Internet, it is perfect to prepare a computer.

(of course, there is no way to install the operating system without networking)

If you have special property to protect and pursue extreme security, it is recommended to use raspberry PI, which is a very cheap way. (you can reformat and restore every time you use the network.

2. Prepare a USB flash disk.

3. Recommend a website: https://www.bitadress.org/ , this is an open source website that can be safely used.

4. Right click to store the website in USB flash disk.

5. Open this web site on a computer that is not connected. Manually mouse to generate bitcoin private key and address.

6. Copy the private key and address to the USB flash drive and print it on paper.

7. Store the USB flash disk and paper in the safe, and it is better to back up more.

8. This bitcoin address can be used to receive coins safely Deposit money.

Note: bitcoin wallet is a random number generator. Most bitcoin wallets are randomly generated through software programs, while https://www.bitaddress.com The generation method of Org / basically realizes real randomness, because when you move the mouse, you may not know what kind of pattern you will draw.

This random way basically realizes that the private key is not brutally cracked

In the process of investing in BTC, we should be familiar with at least one BTC wallet, which is the most basic requirement. For friends who have just entered this industry, they usually put BTC in the exchange. In fact, these BTCs are stored in the bitcoin wallet of the exchange. The private key of the wallet is in the hands of the exchange and does not belong to our management. In theory, the exchange can escape and take the assets in your wallet.

In fact, only when the private key is in our own hands can we fully control the assets, which is also a feature of blockchain digital assets. In the world of digital assets, the private key is everything. Mastering the private key means owning digital assets. If the private key is lost, it means that the assets controlled by the private key are lost. For example, if the private key of bitcoin wallet is lost, this part of BTC will be lost forever.

In BTC digital wallets, wallets can be divided into cold wallets and hot wallets according to whether they touch the Internet or not. Cold wallet, i.e. offline wallet, i.e. the device on which the wallet is installed is offline. Because there is no Internet, the private key cannot spread on the Internet, so the cold wallet is much safer. For example, we can use offline mobile phones to create cold wallets, or use computers without Internet to create cold wallets. Strictly speaking, copying the private key on paper is also called a cold wallet.

Accordingly, a hot wallet is an online wallet. Since the device is online and the private key has the risk of online transmission, in theory, hot wallet is not as safe as cold wallet. The mobile wallet we usually use is basically a hot wallet (after all, this mobile phone).

Therefore, for the sake of security, we'd better put the BTC that we don't intend to trade recently in the cold wallet, which can ensure the security of assets to a great extent. Of course, whether it is a hot wallet or a cold wallet, the private key must be kept. For example, copy three copies, one for yourself, one for your parents, and the other in the safe.

How to create BTC cold wallet?

1. Create bitcoin cold wallet.

Take the BTC wallet of tokenpocket as an example to illustrate how to build a bitcoin cold wallet.

1. Find a mobile phone that is often not used. First download tokenpocket online (HTTPS: / www.tokenpocket. Pro /), and then turn off the network. For example, cut off WiFi or adjust the mobile phone to flight mode. Install the tokenpocket wallet on the mobile phone when offline.

2. After installing tokenpocket, select import wallet and bitcoin in the wallet system.

3. Select "cold wallet" in the import method.

4. In the cold wallet interface, enter mnemonic words, and then set the wallet password. After entering, click Start import below.

5. After successful import, create a cold wallet, as shown in the figure below.

Hot and cold wallets communicate through QR code scanning, and the private key does not touch the Internet, which can effectively prevent hackers from stealing.

2. Create a hot wallet.

After the cold wallet is completed, now create a hot wallet. The cold wallet needs to cooperate with the hot wallet to complete the final transfer.

1. Open the cold wallet in turn: "my - > Manage wallet", and then select the corresponding BTC wallet.

2. Open "advanced mode" in wallet details, and then click "configure observation wallet". Click to pop up the QR code.

3. Use another online TP wallet to scan the QR code generated in the above steps and import it into the wallet. Now, the creation of the observation wallet has been completed. Observing the wallet allows you to observe the assets of the wallet, but you do not have operation permission.

3. Use the cold wallet (with the hot wallet) to complete the transfer.

Hot wallet can be created with cold wallet and hot wallet after authorization. The specific steps are as follows.

1. Enter the transfer address, amount and other information in the wallet, then generate the data to be signed and display it in the wallet in the form of QR code, as shown in the following figure.

Note: do not close this interface, the last step needs to be used.

2. Then scan the QR code with the corresponding cold wallet. After scanning the signature, the cold wallet will get the QR code.

Please note that you need to use the scan code signature (not the camera in the upper right corner) to scan and observe the QR code in your wallet. After scanning, you will pop up the signature information, click "confirm" and enter the password in the pop-up box. Then generate QR code.

The display uses the corresponding observation wallet to scan the code to complete the operation.

3. Finally, scan the QR code generated in the cold wallet with the observation wallet to complete the transfer operation.

When scanning with the observation wallet, scan the QR code in the cold wallet with the camera mark under the QR code in the observation wallet (step 1).

BTC transfers through cold wallet and hot wallet.

It can be seen that in the whole process, the cold wallet is authorized through the scanning code, and the cold wallet and the hot wallet communicate through the scanning code. During the whole transfer process, the private key does not contact the network.

The above is the whole process of making BTC cold wallet and transfer using tokenpocket. The process of creating a cold wallet for other BTC wallets is similar to the transfer process. I hope it will help you.

Bitpie wallet one click buying and selling to buy coins.

1. Open the bitpie wallet and click the [one click trading] button.

2. Select the currency I want to buy, then select the currency to buy (taking bitcoin as an example), fill in the quantity or amount to buy, and click buy.

3. Select the payment method.

4. Check the order information and click confirm to submit the order.

5. after checking the order information, please manually open the mobile banking software of Alipay or main bank, and pay the business according to the payment information displayed on the page. Please complete the payment within 15 minutes and the overtime order will be cancelled automatically. Please read the payment precautions under the order carefully before making payment.

6. After the payment is completed, please take the initiative to click paid, otherwise the merchant cannot issue currency to you. At the same time, please do not click falsely, which will damage your credit in one click transaction.

7. After clicking payment, the merchant will receive your payment reminder. After waiting for the merchant to confirm that the payment is correct, wait a little to receive the currency you purchased.

Bitpie wallet buys and sells coins with one click.

1. Open the bitpie wallet and click the [one click trading] button.

2. Select the currency I want to sell, then select the currency to sell (Ethereum as an example), fill in the quantity or amount to sell, and click sell.

3. Select your collection method.

4. Check the order information and click confirm to submit the order.

5. Wait for the blockchain to confirm the amount of money you sell and meet the requirements. (the confirmation of the block should be done by the blockchain, not by the enterprise. Please wait patiently)

6. After meeting the block confirmation requirements, the merchant will transfer money to you within the specified time.

7. After the merchant transfers money to you, the order status will change to paid. Please check whether the collection amount is correct in time. If the collection is confirmed to be correct, please click the confirm collection button.

8. Complete the order.

Bitcoin is now less than $90000. Most people may say it's too expensive to afford. In fact, you can buy half, 0.01.. After the closure of domestic trading platforms, how to buy bitcoin has become a problem. Here, I want to tell those friends who have never been in touch with off-site transactions how to buy bitcoin.

Bitism

Bitpie wallet only supports mobile terminals. Both iPhone and Android phones can be downloaded and used. The interface is simple. You need an ID card before buying. Video authentication, you can follow the steps. During authentication, you need to remember passwords and help remember words and save them. If you accidentally lose them, you can't find them. The bit faction has the function of one touch trading, which is very convenient. It can be purchased through Alipay and bank transfer. It is very suitable for friends who are afraid of trouble.

Download address: http://bitpie.com/

Huocoin overseas station.

Log in to the official website of Huo coin and click legal tender transaction. Select the appropriate purchase price and conduct real name authentication before operation. You need to contact the seller for payment. After the seller confirms that the payment is successful, the platform will issue the purchased bitcoin to you.

Official website address: HTTPS: / www.huobi.com pro。

Coying cola

The purchase process is similar to the fire currency, supporting WeChat, Alipay, bank transfer and other payment methods, which is relatively safe and convenient.

Official website address: HTTPS: / www.coincola.com/

Warm tips: each trading platform has corresponding charging standards in the purchase process. You can choose a relatively safe and more reasonable charging platform according to your own needs. At the same time, we should also pay attention to transaction risks and invest cautiously!

What if the bitcoin private key is lost? One of the saddest things in the world is that you know you have a lot of bitcoin, but you forget what the private key is! Without the private key, you can't take out bitcoin and can only say goodbye to the wealth inside. Many people may not understand what is a private key? Why is it so important? Let the bee check Xiaobian and give a brief introduction. The private key is equivalent to the password of the account. Without a private key, there is no password. Naturally, you can't get bitcoin to protect the bitcoin stored in the private key.

What if the private key of bitcoin wallet is lost?



What about losing bitcoin private key? Can the private key be found if it is lost?

So, does losing the private key mean that there is no way to retrieve it? When we lose the private key, we can also try to find the private key in these three ways.

1. Use the backup keyfile or JSON file.

In the official wallet of Ethereum, there is a JSON document specially used to save the encrypted private key and public key. Sometimes you will get an alternate JSON file containing your private key from the browser. Pay attention to protect these files, hide or encrypt them, otherwise once the intruder obtains them, he can use your assets at will.

2. Mnemonics

Mnemonics consist of 12 random words, in other words, this is another form of private key. Your 64 private keys can be converted into several common words and words by algorithm, which can be obtained from a unified thesaurus. Different wallets will obtain words from different thesaurus.

3. Retrieve the wallet with digital wallet products.

At present, there are products in China that can help people who forget their private key to find wallets, such as P wallets. When a user loses his private key due to an accident, he can try to find his own digital currency with a low authority standby private key. The recovery instruction will not take effect immediately, but will work after a period of time. So some people are easy to be found by users.

What is the sub address of bitcoin? Bitcoin wallet is based on HD (hierarchical certainty) framework, which has a method to generate different addresses and manage addresses. Each public address of the user's wallet is generated from the xpub (extended public key) of the wallet. Anyone can easily track all payment records. This address generation method can greatly improve user privacy.

How to find the sub address of bitcoin wallet?

1. First click the imtoken asset page, switch to BTC wallet, and then click the QR code style button in the upper left corner to enter the collection interface.

2. At present, the main address of imtoken wallet bitcoin wallet is displayed. Clicking the sub address is the sub address of the current wallet.

How to add bitcoin sub address.

1. Click the button to switch BTC and eth wallets at the top of the asset page, and select the ·· button on the right side of BTC wallets.

2. Click the wallet address to enter the imtoken wallet management interface and enter the wallet address page.

3. Click the imtoken wallet add button to add a new bitcoin address and select a new address. Then go back to how to find the sub address of bitcoin wallet. Click the sub address to see the bitcoin address just added.

How to transfer bitcoin in bitcoin wallet?

Basically, two suggestions.

1. Direct transfer: transfer all the money in the wallet to the new address. There is a handling charge.

How do I transfer bitcoin to my wallet?



2 export private key: export the private keys of all deposit addresses in the wallet, and then import the new wallet. There is no handling charge. Secure offline operation.

The wallet file of bitcoin QT client downloaded from taobit - China's first bitcoin investment service platform is wallet DAT, the wallet file of the multibit client is multibit Wallet, the file name, size and format of these two files are different, so how to switch? If you don't need to save the original address, sending money directly to the multibit address is the most convenient way. If you need to keep the original address, you can export and import the private key, as follows: 1. Open bitcoin QT client, find your deposit address (you may have multiple addresses, find the deposit), and right-click to copy; 2。 Open help - debug window - console in turn, enter the command dumprivey (space), paste the address just copied, and return Then the deal is done

Have you ever encountered the situation that bitcoin transfer hasn't arrived for a long time?

Most people should not encounter it, because generally speaking, if you use the exchange to withdraw money, the fee is not low, and the miner's fee will not be too low. If you use the wallet to transfer money, the wallet will give the appropriate miner's fee by default, which generally will not appear for a long time.

However, there will always be some special situations in this world. For example, when an exchange just launched, the handling charge for withdrawing bitcoin was very low, resulting in my withdrawal not arriving for three days; Another example is that bitcoin suddenly soars and transfers are congested, so your transaction is not packaged and may not arrive for a long time.

Therefore, today's article is worth understanding, at least after a problem, know how to solve it.

Of course, this article is also written because a young man in our community has not received bitcoin transfer for two days.

Why can't bitcoin transfer arrive?

Let's first look at a chart of unconfirmed transaction volume K line in bitcoin transaction memory pool. Generally, the chart statistics unconfirmed transactions will use transaction volume as a parameter.

According to the above figure, you will find that December 2017 is the most congested. Recently, 2019 is not congested, but it has been a little congested recently.

So why bitcoin congestion?

The main reason is that each block of bitcoin is only 1m, and there is a block every 10 minutes or so. When the 10 minute transaction scale exceeds 1m, there will be unpackaged transactions.

So what kind of deal hasn't been packaged yet? Miners want to make money from lower cost transactions, so when mathematical problems begin to package, miners will certainly choose the transactions with higher cost to package in the memory pool, and who will package more money.

Another picture shows that from this renewal, we can see that the transaction volume of high mining fees is very small. With the reduction of miners' fees, the trading volume is increasing. Most of the miners' fees in the figure are within the range of 0.0020btc/kvb.

Why didn't the hardware BTC wallet receive the money?

Generally speaking, the current best miner's fee can be calculated according to the unpackaged transaction volume.

The above chart is from the website: HTTPS: / BTC com/stats/unconfirmed-tx

What if the transaction is not confirmed for a long time?

Generally speaking, there are two plans. The first plan is to wait. When the transaction is not congested, the overall mining cost will decrease, and your transaction may be packaged (of course, your transaction may be squeezed out of the memory pool).

The second option is more down-to-earth, using the transaction acceleration service. Frankly, it is additional payment, and then let the ore pool trade during packaging and intervene manually.

How to use transaction acceleration service?

I personally know there are three ways.

The first way is to find your friends in the mine pool. They will privately accept some transaction acceleration services. Personally, the price of private mine pool may be a little cheap, but after all, few people know the mine pool.

The second method is to use bitcoin transaction acceleration service.

Download bitpai app (IOS needs to use an app store account in Hong Kong or abroad), as shown in the figure below:

Please note that the price of transaction acceleration service will vary according to congestion. In addition, bitists are more considerate. Besides BTC or RMB payment, this is really much more convenient.

The third method is to use the mine pool transaction acceleration service. I use the viabtc transaction acceleration service, as shown in the figure.

You'll see free acceleration. According to the order of submission, viabtc ore pool can support up to 100 transactions per hour, but it is difficult to grasp now.

Of course, there are also charging acceleration services. Viabtc mine pool can recharge BTC into the wallet and use the wallet to pay the acceleration service fee.

For details, please refer to the introduction of acceleration service: transaction accelerator viabtc.

epilogue

After reading today's article, if you encounter a bitcoin transaction that hasn't arrived for a long time, you don't have to panic. If you are anxious about the transaction (such as cash withdrawal), then quickly buy the transaction acceleration service. I personally recommend using bitcoin transaction acceleration service, because it's very simple to use, because who doesn't have bitcoin application this year?

Note that I am a golden horse. When others leave the coin circle, it is time for me to plough deeply.

This is my 154th day, your bear market. Let me spend it with you?

Golden Horse Award, take this bright road with you.

Because the personal key controller has been investigated by the police, okex, the world's second-largest digital currency service platform, suddenly announced the suspension of coin withdrawal. Bitcoin has a public key and private key, and it is first necessary to obtain and sell bitcoin; Okex has been complained by several companies. Okex in Hong Kong recently caused dissatisfaction among dealers due to changing the terms of derivatives contracts worth US $13.5 billion, resulting in losses to some dealers. Last week, okex will bitcoin cash futures.

More than 800 bitcoins can be bought on okex. Based on the highest price of bitcoin at the end of 2017 of US $190000, the value of these 800 bitcoins is more than 100 million yuan. Even today, when bitcoin has shrunk, she will be the best.
Okex needle bitcoin - is the okex trading platform true)
How does okex transfer bitcoin to others
1. International online news according to the data of okcoin, a well-known digital asset trading platform, the price of bitcoin operated in a volatile upward trend all day on September 11 yesterday, except for the Dayang line at 9 a.m. in Asia.
2. International online news according to the data of okex, an internationally famous digital asset trading platform, yesterday, on September 13, the price of ehcbtc was slightly adjusted after the opening of the market, fell to 00686 at the lowest around noon, and then decreased slightly.
3. According to statistics, the number of bitcoins in the wallet of okex exchange alone reached 200000, about 15 billion yuan. Then, as the second largest digital currency exchange platform in China and the second largest digital currency exchange platform in the world, what happened.
4. On May 12, although bitcoin frequently rose and fell sharply and extreme markets continued to be staged, it still earned enough attention in 2021. Under the sharp rise in popularity, the currency circle attracted more and more investors, which also helped.
5. This time, okex should have encountered the biggest crisis since its establishment. After the platform announced the suspension of coin withdrawal, its founder Xu Xingxing was also confirmed to have been taken away by the police a week ago.

How to recharge bitcoin safely?

How to recharge bitcoin for currency security? Virtual currency is very popular recently. Currency security is one of the largest virtual currency trading platforms in the world, which is used by many small partners. Some small partners don't know how to safely recharge bitcoin in currency. Let's have a look.
How to recharge bitcoin for currency security?
Login account
Open the currency security platform and register or log in your account.
Go to the recharge page.
Click and open the wallet page, click the recharge button, and then arrive at the recharge page.
Recharge bitcoin
On the recharge page, select bitcoin and network channel for currency. The channel must not make mistakes. If you convert money from other exchanges into currency security, the channel must be the same. Otherwise, the currency will disappear forever.
According to the address or QR code on the right, money can be transferred from other exchanges to money security, or it can be recharged directly from the wallet through the wallet address.
The rates of different channels are different. Check the instructions of each exchange.

How to import imtoken into BTC wallet? When the user uses imtoken2 0, they must use mnemonics to generate digital identities. If you haven't backed up mnemonics before, or if you're using a scattered wallet for the first time, you can click create identity. For a tutorial on how to create a digital identity, click here. If you have backed up mnemonics before, you can use the recover identity feature and import mnemonics to generate a digital identity. So, under the current digital identity, how to import BTC wallet?

Take the introduction of bitcoin mnemonics as an example:

1. Click the drop-down switch wallet button at the top of the "wallet" home page, and click the "+" button on the right side of "import wallet".

2. Enter the "select wallet type" interface, click "bitcoin wallet" to enter the "import bitcoin wallet" interface.

3. Select "mnemonic words", enter mnemonic words in the input box (each mnemonic word is separated by space), enter the wallet password, and select whether to isolate the witness wallet address.

Note: it should be noted that when selecting the address type, select "isolation witness" or "ordinary wallet". The isolation witness wallet starts with the BTC address, while the ordinary wallet starts with the BTC address.

How to import BTC into imtoken wallet?



What is quarantine witness?

Segwit, the full English name of segwit, was first proposed by Pieter wuile, the core developer of bitcoin, in 2015. This is a better solution for bitcoin to cope with capacity expansion. The wallet address supporting isolation verification starts with the number "3" and is consistent with multiple signed wallets.

Benefits of isolation witness:

1. Better security.

2. The block capacity can be increased.

3. Checking transactions is faster.

4. The transaction fee will be cheaper than the ordinary address type (address starting with 1).

When it comes to handling charges, we all know. After all, we can still meet it in life. For example, bank transfers also require handling charges. Looking for an intermediary to rent and buy a house is to pay a certain commission. In fact, it can also be understood as handling fee. Therefore, the purchase of bitcoin also requires a handling fee. After all, the meaning of the exchange is equivalent to that of a housing intermediary. So, what is the handling charge for buying bitcoin? Let's talk about the small series of the currency circle in detail.

How much is the handling charge for bitpie wallet to buy coins



How much is the handling charge for buying bitcoin?

In the underlying agreement of bitcoin, the specific amount of bitcoin transaction fee is not clearly specified, but the total input in the address shall not be less than the total output, that is, the total amount of bitcoin in the wallet must be greater than the sum of transfer amount and fee amount. It's easy to understand. You only have 10 yuan. Transfer 10 yuan and charge 1 yuan. That is to say, you must spend 11 yuan. 10-11 = - 1. Naturally, this transaction cannot be completed.

The transaction cost of bitcoin is determined by factors such as the size of transaction data and the number of transactions. Bitcoin follows the utxo model, and each transaction includes multiple transaction inputs and transaction outputs. In fact, the composition of each uncost transaction output depends on your transaction input. When you need to transfer a bitcoin to another address, it may consist of 5 0.2 bitcoins or 10 0.1 bitcoins in your transaction input.

Generally speaking, ordinary bitcoin transactions consist of one input and two outputs (transaction output and zero output), about 200 bytes. If the default charge is 0.0001 bitcoins per 1000 bytes, the bitcoin transfer fee is about 0.001-0.002 bitcoins. However, when a single input is insufficient to pay for the output, the above multiple transaction inputs will constitute a problem of cost-free output, and the amount of data will increase. The more complex the composition of non cost transaction output, the more bytes to be processed, and the higher the handling fee.

Now bitcoin wallet can intelligently adjust fees according to network data as the best price for transfer. If your transaction needs confirmation urgently, you can also increase the fee by customizing the fee.

Bitcoin transaction fee details.

1. The customer is responsible for collecting the bitcoin balance in your wallet and preparing for payment, because every bitcoin you receive exists in your wallet until you spend it.

2. If your outputs are less than 0.01btc (including changes in funds inside your wallet), you must pay a handling charge of 0.0001, even if you transfer it to yourself. The wallet has an established rule when preparing your payment amount, that is, when preparing the payment amount in many inputs, try to avoid the change of the amount less than 0.01btc (for example, if you want to pay 5.005btc, 3 + 2.005 or 1 + 1 + 3.005 instead of 5 + 0.005).

3. The larger the amount, the higher the currency age and the higher the priority.

If the amount you send is too small or your bitcoin has just been mined, your transfer will no longer be free. Each transaction will be assigned a priority based on the age of the currency, the number of bytes and the number of transactions. Specifically, for each input, the client multiplies the number of bitcoins by the time they exist in the block (currency, age, age), and then divides all the products by the size of the transaction (bytes).

4. The fee per kilobyte will detect the size of the transfer (in bytes) at the end of the transfer, which generally depends on the size of the input and output. The calculation formula is as follows: 148 input + 34 output + 10. If the transfer size exceeds 10000 bytes, but the priority meets the free standard, you can still enjoy the free transfer, otherwise you need to pay the handling fee. By default, the cost of no 1000 bytes is 0.0001btc, but you can also add it on the client. Open tab Settings > Options > main adjustment cost. If the fee you set is less than 0.001btc, it will be calculated by 0.0001. When this rule applies, it will replace the rule in step 2 instead of accumulating.

Finally, the editor of the currency circle warmly reminded investors that they should comply with the investment trend and grasp the general trend, just like sitting on a spaceship. It will soon take you up high, and it's hard not to make money. On the contrary, if they do contrarian operation, especially in the large market, contrarian operators will fall into a bottomless hole, but they are dissatisfied with how to fill this hole. If they deeply grasp investors, it will directly cause huge losses, so the trend is greater than everything.

How to select ore pool for mining Ethernet eth?

Generally speaking, the selection of ore pool depends on the allocation mode, rejection rate and delay of ore pool. There are many revenue models, such as PPS, PPLNs, PPLNs +, etc. If you want long-term stability and high income, you can choose PPLNs mode. In the long run, the income is much higher than PPS mode. Of course, the lower the rejection rate and delay of the ore pool, the better. Moreover, the stability of the ore pool must not be good every three or five times. Considering comprehensively, you can try AA ore pool, which is good in all aspects.

Hope to be useful to you, please adopt!

How to trade Ethernet coins in Ethernet wallet?

You can choose to trade in the digital currency exchange. At present, the mainstream digital currency exchanges in the market are coin an, Huo coin and bitnet.

Which company to buy swarm miner node.

Which company to buy swarm miner node.

Which is better, spark mine pool or fish pond?

It's better than a fish pond.

What is the ranking of eth top ten ore pools in China?

The specific ranking is not clear, but Ethernet ore pools include spark, Duomi, fish pond, baow ore pool, etc. It is said that baow mine pool is good. It was established in 2013. It is a well-known old mine pool.

How to dig bitcoin?

When bitcoin nodes are connected to each other, they get transactions they don't have from each other. However, due to the long-term accumulated transaction volume of bitcoin, it is difficult for the two nodes to compare the transactions you lack / the transactions I lack one by one.

In order to solve this problem, Nakamoto has invented an important technology of blockchain. Nodes ensure the unity of all node data through block synchronous trading, and ensure the uniqueness of the blockchain by competing for block packaging rights (i.e. mining).

① Blocks and blockchains.

Packets traded over a period of time are called blocks. The whole bitcoin network generates a block every 10 minutes on average. Each block is linked to the last block and connected in turn to form a blockchain.

② Synchronize transaction data in blocks.

Blocks are numbered from 1, so after node a is connected to node B, the transaction data can be easily synchronized as long as the block number height of both sides is checked. For example, if node A's own block height is 100 and node B's block height is 110, only B synchronization 101 ~ 110 is required.

③ Reward of packaging block.

In order to ensure that there are nodes packaging bitcoin transactions, bitcoin rules stipulate that the packaging transaction nodes will receive bitcoin as a reward.

A. Part of the package reward comes from the transaction fee paid by the founder of the transaction (100 ~ 1000 fees per KB of transaction size).

B. The other part comes from the initial allocation of 21 million bitcoins. The initial reward is 50 bitcoins per block, and then the reward for every 210000 blocks (about 4 years) will be halved until around 2140, when the block reward is less than 1 Cong. At this time, the total amount of block awards is 21 million bitcoin, which is the source of the total amount of 21 million bitcoin (to be exact, 209999.9769000).

After 2140, the packaging reward will only come from the transaction fee paid by the transaction founder.

④ Competition for block packaging rights.

Node packaging transaction only needs to consume low-cost network and computing resources. The existence of packaging reward (at present, the packaging reward of 25 bitcoins in each block is about 40000 yuan), which makes a large number of nodes want to package transactions. In order to ensure the uniqueness of the blockchain, bitcoin rules stipulate that nodes use a coin tossing method to compete for the transaction packaging right. The node keeps throwing coins. Whoever throws the results that meet the rules first will get the trading packaging right and packaging reward of this block.

BTC. ETH. What does usdt mean?

The US dollar equivalent of BTH is the US dollar equivalent of teh.

What is the difference between bitcoin and usdt?

Are BTC and usdt wallet addresses the same

1. The concept of bitcoin was first proposed by Nakamoto on November 1, 2008 and officially born on January 3, 2009. According to Nakamoto's idea, the construction of open source software and P2P network. Bitcoin is a virtual encrypted digital currency in the form of P2P. Point to point transmission means a decentralized payment system.

Unlike all currencies, bitcoin does not rely on specific monetary institutions. It is based on specific algorithms. Through a large number of calculations, bitcoin economy uses many nodes composed of distributed databases to confirm and record all transaction behaviors in the whole P2P network, and uses password design to ensure the security of money circulation. The decentralized characteristics of P2P and the algorithm itself can ensure that bitcoin cannot manually control the monetary value through a large number of bitcoins. Cryptography based design can only be transferred or paid by the real owner. This also ensures the anonymity of money ownership and circulation transactions. The biggest difference between bitcoin and other virtual currencies is that its total number is very limited and very scarce.

2. TEDA coin (usdt) is a token based on the stable value currency US dollar (USD) launched by tether (hereinafter referred to as usdt). 1usdt = US $1. Users can use usdt to exchange with usd1:1 at any time. Tether strictly abides by the 1:1 reserve guarantee, that is, for each usdt token issued, its bank account will have a capital guarantee of US $1. Users can query funds on the tether platform to ensure transparency.

TEDA currency is a virtual currency that links cryptocurrency with legal tender dollar. Each TEDA coin is symbolically linked to the legal tender supported by the government. TEDA currency is a virtual currency, which is kept in the foreign exchange reserve account. Get legal tender support. This method can effectively prevent the price fluctuation of cryptocurrency. Basically, the value of TEDA currency is equal to one dollar.

Response time: 2021-02-05, please refer to the latest business changes announced on the official website of Ping An Bank.

[I know Ping An Bank] want to know more? Let's see. I know Ping An Bank ~.

What's the use of usdt in huocoin?

It's your wallet address. Transfer the bitcoin in your account to your wallet.

one

Extract bitcoin. Transfer directly to your bitcoin account.

two

Withdraw RMB. Bind the bank to open and sell bitcoin.

What is the difference between usdt transaction and BTC transaction?

1. TEDA currency (usdt) is a virtual currency that links cryptocurrency to the legal tender US dollar. It is a virtual currency kept in the foreign exchange reserve account and supported by legal tender.

2. Contract trading is the general name of bitcoin Wright coin futures contract trading.

Warm tips: ① the above contents are for reference only, without any suggestions. Relevant products are issued and managed by corresponding platforms or companies, and our bank does not bear the responsibility of product investment, payment and risk management. ② There are risks in the market and investment needs to be cautious. Before making any investment, you should ensure that you fully understand the investment nature and risks involved in the product, and carefully understand and evaluate the product before judging whether you are involved in the transaction.

Response time: 2021-02-02, please refer to the latest business changes announced on the official website of Ping An Bank.

[I know Ping An Bank] want to know more? Let's see. I know Ping An Bank ~.

What is the address of BCH withdrawal

Different. These are two different currencies. The withdrawal address of BCH can be seen in the withdrawal.

BTC. USDT. ETH. BCH. What does LTC mean?

BTC. USDT. ETH. BCH. LTC means:

1.BTC

The concept of bitcoin was originally proposed by Nakamoto in 2009. According to Nakamoto's idea, it designs and releases open source software and establishes P2P network. Bitcoin is a P2P form of digital currency. Point to point transmission means a decentralized payment system.

2.USDT。

TEDA currency is a virtual currency that links cryptocurrency to legal tender US dollar. It is a virtual currency kept in the foreign exchange reserve account.

3.ETH

Ethereum is an open-source public blockchain platform with smart contract function. It provides decentralized Ethereum virtual machine to process point-to-point contracts through its special cryptocurrency ether.

4.BCH

Bitcoin cash is a new bitcoin with different configurations launched by a small number of bitcoin developers.

At 20:20 on August 1, 2017, bitcoin cash began to be mined, and bitcoin cash (BCH) equal to the number of bitcoins will appear on the account of each bitcoin investor.

5.LTC

Wright coin, abbreviation: LTC, currency symbol:; It is a network currency based on point-to-point technology and an open source software project under MIT / X11 license. It can help users pay anyone in the world immediately.

Reference source: Network - bitcoin.

Reference source: Internet - TEDA coin.

Reference source: Network - Ethereum.

Reference source: Network - bitcoin cash.

Reference source: Network - Wright coin.

Btcusd is different from btcusdtm.

The difference between Pitty hill and billteam is that there is an iron curtain.

What is the relationship between BTC and usdt on okex?

Okex has the right deal.

What do fire coin and bitcoin wallet mean?

Huocoin.com is a bitcoin trading platform. By the end of 2016, the cumulative turnover of huocoin had reached 2 trillion yuan.

Bitcoin is a virtual encrypted digital currency in the form of P2P.

Bitcoin is different from all currencies. Bitcoin does not depend on specific monetary institutions. According to specific algorithms and through a large number of calculations, bitcoin economy uses many node distributed databases of the whole P2P network to confirm and record all transaction behaviors, and uses password design to ensure the security of money circulation. The decentralization of P2P and the algorithm itself can ensure that bitcoin cannot be manufactured in large quantities.

(9) Expand the difference between usdt and BTC:

Huo coin network business

1. Huo coin global station, headquartered in Singapore, provides digital asset trading and investment services.

2. Based on the Korean won digital asset trading platform, Huo coin Korea provides digital asset trading services.

3. China has become a platform for information and research services in vertical chain of block chain, providing Chinese mainland users with information on R & D and application of block chain technology, integrating industry consulting, research, education and training services.

4. Huo Coin Wallet, headquartered in Beijing, China, provides digital asset management services and user experience.

Bitpie wallet is the wallet that supports the main chain most in the world. Currently, it supports the following currencies:

Ether system: eth Erc20 full token ETC；

Bit system: BTC BCH；

EOS: EOS EOS full token;

StableCurency：USDTOmni. USDTERC20. SCNY；

And LTC Dash. Zcash. QTUM. TRON. BTM and many other main networks.

Bitpie wallet plus coin.

Go to the wallet home page - the + in the upper right corner.

1. Take usdt-omni as an example, the usdt-omni under the mainstream currency.

2. Click the gray switch on the right side of usdt-omni. When the switch turns green, usdt-omni has been turned on. Usdt-omni will be displayed in the currency list on the front page of the wallet.

Bitcoin wallet currency switching.

Go to the wallet home page, select the currency to switch, and click.

How to transfer out and transfer in digital assets.

Here's a key reminder: whether transferring to others or collecting currency, you must check the address of the corresponding currency. Because the address of each currency is different, once you make a mistake, your currency will be lost and cannot be found. If you transfer eth to someone else's EOS address, or someone else transfers BTC to your eth address, the currency will be lost.

1. Bitpai wallet supports multiple currency operations. Click the + sign to add the required currency.

2. Collecting money is to transfer money from someone else's account to your own account. Take BTC coins as an example. Click BTC to enter the page. Step 1: click coin collection, and then you can see the QR code and address on the page. You can send QR code scanning to obtain the transfer address, or directly click the copy address to send it to others.

3. Currency issuance is the transfer of money from one's own account to another's account. Take BTC currency issuance as an example, click BTC to enter the previous page, click currency issuance, jump to the page and fill in the bitcoin address. The number or amount of bitcoin to be transferred, adjust the miner's cost, and click to confirm the successful issuance of currency. It should be noted that the low cost of miners may lead to transfer failure.

Other functions of wallet.

The wallet page also provides one key transaction and one point transaction functions. It should be noted that if you don't know how to use it, novices will have a certain risk!

Click all, as shown in the figure. There are various functions, which will not be introduced here one by one. Friends, you can explore by yourself.

2. Click the exchange and you can find that bitpai wallet supports transactions in various currencies, including RMB, BTC and eth, as well as transactions in multiple currencies. It should be noted that due to the relatively small trading volume, the price may be high or low, which has certain risks. Novices should use it with caution!

3. Click find to see various market information.

4. Click assets to view the total assets in the wallet.

5. Click my to check all kinds of detailed data. Without introducing them one by one, friends can explore by themselves!