The general recharge steps for exchanges are as follows:
1. The exchange generates a deposit address
2. You transfer coins to this address
3. The exchange will check the transaction confirmation on the blockchain and enter it into the account.
4. Your corresponding balance increases.
First of all, in order to facilitate centralized management, the exchange will not provide the mnemonic (private key) of the account to the user, so the highest control of this coin is in the hands of the exchange, so you are in the exchange The balance is essentially a number that the exchange's database gives you feedback, and it can also be understood as an IOU issued to you by the exchange.
So when you deposit coins on the exchange, your coins are equivalent to the address of the exchange; when you perform operations such as withdrawing coins, whether you can get your coins depends on whether the exchange will cash it out for you That IOU.
Extended reading:
1. Generally, the exchange will regularly sort out the address balance and integrate most of the assets on the user's address to a certain address, so sometimes when you search for your own exchange address on the blockchain browser, it is possible to find asset transfers. It is the exchange that is sorting the balance, as long as the balance in the exchange can match, don't worry too much.
2. When you perform transfers, pending orders and other operations within the exchange, they are all digital transfers in the exchange system, and transactions cannot be queried on the blockchain. This is an off-chain transaction. When you withdraw coins, when the exchange sends the coins to the address you submitted, the transaction can be queried on the blockchain, which is an on-chain transaction.
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