The four most famous international exchanges:

Binance INTL	OKX INTL	Gate.io INTL	Huobi INTL
China Line　APP DL	China Line　APP DL	China Line　APP DL	China Line　APP DL

Note: The above exchange logo is the official website registration link, and the text is the APP download link.

As a virtual currency, Bitcoin has attracted the attention of many investors. However, since it is a virtual currency, it will inevitably make many investors feel insecure, especially in terms of Bitcoin wallets. Today I will analyze and analyze the backup of Bitcoin wallets. several methods.

**New version client backup**

Bitcoin official client from 0.5.0
Start supporting backup wallet. The method is to open the menu, "File" → "Backup Wallet". Afterwards, you can select the folder for wallet backup and click the "Save" button.

**Manual Backup**

The first thing you need to do is to back up your wallet. It is recommended that you do this immediately after installing the Bitcoin client. This way, in the event of a computer failure or data loss, you can always restore your wallet and use the Bitcoins in it.

**Backup steps are as follows:**

1. Close the Bitcoin official client. Select menu File→Exit on the main interface.

2. Open the Windows Start menu.

1. If you are running Windows XP, select "Run" and enter the following:

explorer %APPDATA%BitCoin

2. If you are running Windows Vista or Windows 7, enter directly in the "Search Programs and Files" box of the Start menu:

explorer %APPDATA%BitCoin

3. Windows Explorer will open. You only need to copy the wallet.dat file to other hard disk partitions, mobile hard disks or USB flash drives to complete the backup.

**Crypto Wallet**

Wallet encryption refers to the automatic encryption and storage of wallets that store private keys. Bitcoin official client from 0.4.0
Version starts to support wallet encryption. Encrypted wallets will prompt you to enter your password every time you make a payment. If the password is wrong, the client will reject the payment. If you use the earliest backed up wallet
(wallet.dat), you can still trade normally. Considering the principle of Bitcoin, it should also be concluded that as long as the private key (wallet) exists, it can be proved that you are the legal owner of this wallet.
Or, no matter whether the wallet (the core is the private key corresponding to an address) is encrypted or deleted, it cannot be denied.
In order to ensure absolute security, the Armory client separates the wallet and the client, and the wallet in the offline client is strictly encrypted and protected. If the online client needs to pay Bitcoin, it needs to be offline by the master
The wallet's computer signs it and then broadcasts it through the online client.
Although Blockchain.info is an online wallet service, each user's private key is encrypted in the user's browser through the Java virtual machine. blockchain.info
Only the encrypted key file is stored. In this way, users do not have to trust the administrator of Blockchain.info and can trust others to manage their private keys.

**New version of client wallet encryption**

Bitcoin official client from 0.4.0
Version starts to support wallet encryption. Encrypted wallets will prompt you to enter your password every time you make a payment. If the password is wrong, the client will refuse payment. This way even if wallet.dat
Even if it is stolen, hackers cannot easily steal your Bitcoins.

The encryption method is: open the client and select the menu "Settings" → "Encrypted Wallet".

Once encryption is complete, the client will prompt you for your password each time you make a payment:

You can also select the menu "Settings" → "Change Password" to change the password of your wallet:

Wallet encryption is not a panacea, and patient hackers will try to use brute force to crack your wallet password. Therefore, be sure to set a strong password to prevent hackers from cracking it.

**Restore Wallet**

The steps are simple. You just need to follow steps 1 - 2 of "Backup Wallet" and open the wallet folder of the Bitcoin official client. After that, copy your backed up wallet.dat
Copy the file to this folder and overwrite the original file.

You need to be cautious when investing, and the same goes for investing in Bitcoin. No matter where a problem occurs, it may cause you losses. The above methods can help you invest better in Bitcoin.