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.

Let's talk about a few words we often hear, namely wallet address, private key and public key. Although these three words are common, many people don't know what they are, nor do they know their specific connection.

NO.1 | Wallet address

Among the three, Bitcoin wallet address is the most common one. They are a combination of numbers and letters, which looks a bit like garbled code. The wallet address is like a bank card number, representing your Bitcoin account.
Wallet address can be obtained through exchanges, Bitcoin clients and online wallets.

NO.2 | Private key

The private key is similar to the bank account password. Its essence is a random number.
The private key is stored in the wallet file and managed by the wallet software. People who download the client can find the private key in the wallet file. As long as you have a private key, it means that you have the corresponding Bitcoin and can use these Bitcoins, so it is very important to keep your private key.

NO.3 | Public key

So what is a public key? Let me give you an example! Suppose Xiao Ming wants to transfer a BTC to his girlfriend Xiao Hong, Xiao Ming needs to use the private key to sign the transaction, but how can others know that Xiao Ming has the right to use and own the BTC? How can others judge whether the transaction is valid? When Xiao Ming uses the private key to sign the transaction, he will also send his public key. When everyone sees Xiao Ming's public key, they know that Xiao Ming does own the BTC and the transaction is valid.

NO.4 | The relationship between wallet address, private key and public key

The public key is obtained after a series of complex operations on the private key. Knowing the private key can deduce the public key, but this deduction is irreversible, that is, knowing the public key cannot deduce the private key.

The wallet address is a string obtained after a series of operations on the public key. This process is also irreversible. Knowing the address cannot deduce the public key.