How to back up the private key of bitcoin Wallet

1. In order to make it easier for new people to understand, sister coin will use some metaphors. Although she is not strict, she will understand better
the private key is like your bank card password
the address of bitcoin wallet is like your bank card
as long as you have the bank card and password, anyone can withdraw money from ATM
the address of bitcoin wallet is public, which means that everyone else has your bank card, so your bank card password (private key) becomes very important at this time
once your key is disclosed, others can transfer your bitcoin

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2.

The private key of bitcoin wallet cannot be viewed online. Bitcoin exists on the platform. To download core or classic is the real wallet, and then you can view it

[description of private key of bitcoin wallet]:

1. Wallet encryption refers to automatically encrypting and storing the wallet with private key. The official bitcoin client supports wallet encryption since version 0.4.0. The encrypted wallet will prompt you to enter your password every time you pay. If the password is wrong, the client will refuse to pay

2. If you replace it with the earliest backup wallet (wallet. DAT), you can still trade normally. Considering the principle of bitcoin, it can be concluded that as long as there is a private key (wallet), you can prove that you are the legitimate owner of the wallet. No matter whether you encrypt or delete the wallet (the core is the private key corresponding to an address), you can't deny it

3. When backing up the bitcoin wallet, you should also pay attention to the existence of bitcoin payment change mechanism (for example, if you send 50 BTC in a complete 100 BTC to an address, the system will send 50 BTC to the other party's address, and return 50 BTC to a new address of your client, which will not be directly displayed in your address list)

4. After sending bitcoin to other addresses 100 times or using 100 different addresses to receive bitcoin, please back up your wallet again, otherwise the returned and received bitcoin will be lost forever. In addition to encrypting wallets, users can also generate offline paper wallets and brain wallets

3. Bitcoin core is an official client used to manage the private key of bitcoin. Having the private key of the bitcoin address means having the control right of the corresponding bitcoin. Once the private key is lost, it cannot be recovered. Therefore, it is very important to back up the wallet
the wallet file of the wallet client is the database for storing the private key of bitcoin. Both the private key and the public key are stored in the wallet.dat file of the bitcoin wallet. Keeping wallet files securely in multiple locations prevents bitcoin from being recovered in the event of an accident
wallet file location
Windows XP - C: & # 92; Documents and Settings\{ username}\ Application Data\ Bitcoin\ wallet.dat
Windows 7/8 - C:\ Users\{ username}\ AppData\ Roaming\ Bitcoin\ Wallet. Dat
Mac OS X ~ / library / Application Support / bitcoin / wallet. Dat
linux ~ /. Bitcoin / wallet. Dat
the above is the default wallet directory of bitcoin core client. If the data directory is specially set, you can search the keyword "wallet. Dat" through windows to the wallet. Dat
my address:

4. Just the wallet.dat file. For fear of theft, back up this file to other places, and then delete it. Never back up first

5. Select the export private key in the settings, and then select the export folder

6.

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< critical hit

class A certain probability causes 150% of the attack power & mdash; 400% of the damage. Some skills can't be dodged, some skills can only be triggered when the enemy's combat power or own combat power is lower than what percentage, and some skills can't be launched until a certain round

< percentage

class It has a certain probability to damage the enemy's current combat power percentage. Heroes with this skill are best placed in the front row. The earlier you trigger, the better. Armor can resist the damage of this ability

< recovery class

It has a certain probability to recover the combat power of your damage percentage or the combat power of the enemy. Hit damage will be resisted by armor, but recovered combat power will not count as armor. When you regain your combat power, you will ignore the enemy's armor

< four dimensional

class Increase your four dimensions, attack, defense, dodge and king

7. Click on the top left corner of its app, select your wallet to store EOS, and then click in to see where the private key is exported.

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9. Your bitcoin is stored in your wallet (although this is not entirely correct technically, it can be compared to this). Therefore, you need to keep your wallet well
to back up your wallet, the first thing you need to do is to back up your wallet. It is recommended that you do so immediately after installing the bitcoin client. In this way, in case of your computer failure and data loss, you can recover your wallet and use bitcoin at any time
the backup steps are as follows:
1. Close bitcoin official client. In the main interface, select file → exit
2. Open the WinXP start menu, select "run" and input the following contents: Explorer% appdata% bitcoin (Windows Vista or windows 7, directly input in the "search programs and files" box of the start menu)
for example, the path of my computer: C: &# 92; Documents and Settings\ Administrator\ Application Data\ Bitcoin (some folders are hidden, you need to check the tool - Folder Options - View - show all the folders, and then apply OK)
3. You only need to the wallet.dat file to other hard disk partition, mobile hard disk or USB flash disk, and the backup can be completed
encrypted wallet if you use bitcoin on a public computer, or you think your computer may not be secure enough, you can choose to encrypt the wallet after each use. In addition, your backup wallet file also needs to be encrypted according to this method
WinRAR is a compression tool for encrypting wallet, which is usually installed on computers
first, you need to close the bitcoin client and find the file wallet.dat as described in "backup wallet" in the previous section. Then right click on the file and select "add to compressed file...", and the following dialog box will appear:
set a file name and check "delete source file after compression". Then click "advanced" tab:
click "set password...", input the same password twice in the pop-up dialog box, click "OK" button, and then click "OK" button again to complete the encryption. You will see that the original wallet.dat file in the wallet folder is gone, and there is an additional. Rar file. Encryption succeeded
you can encrypt the backup of your wallet in the same way
the recovery process is simple. Just follow steps 1 – 2 of "backup wallet" to open the wallet folder of bitcoin official client. After that, your backup wallet.dat file to this folder, and then overlay the original file
if your backup uses WinRAR encryption, you need to enter the correct password first to recover the wallet.dat.