Blockchain makes money

The premise of resetting the password of metamask wallet mobile phone is that you should remember the backed up mnemonics. If you forget your mnemonics, no one can help

If you lose or forget your password but still have a mnemonic private key, you can reset your password on your mobile app by following these steps:
Before continuing, make sure you have backed up your secret recovery phrase and private key correctly.
Click "reset wallet" to get all the key information and exit the application.
Select "import with seed phrase / secret recovery phrase" on the following screen:
Metamask wallet mobile phone password reset tutorial
You will need to enter your secret recovery phrase and new password.
If you have any custom tokens or custom RPC networks in your original wallet, you need to add them manually.
To better convey the importance of never sharing your seed phrase, we changed the name of the phrase to "secret recovery phrase".

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.

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.

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