This is a story about common mistakes in cryptocurrency. Beginners often send funds to the wrong network, and coins never come back, which happens quite frequently. I've also seen several people around me make this mistake.

There are various blockchains in the world of cryptocurrencies. Bitcoin, Ethereum, Tron, Binance Chain, and so on—these are like different banks. You can only send within the same network. For example, if you send TRC20 tokens to an ERC20 address, the transaction might succeed technically, but the recipient won't see it reflected. That's because they are on different networks. Once you send to the wrong network, it's usually unrecoverable. This is common knowledge in the crypto world.

However, there are ways to handle certain situations. First, when transferring between exchanges. This is the easiest to resolve. When checked on the blockchain, the funds are usually in the recipient exchange. Contact customer service and provide the necessary documents, and there's a good chance the funds will be returned within a few days. But you will need to pay gas fees. For example, moving from another network might require hundreds of dollars worth of ETH. If the gas fee for the wrong coin is less than that, it's better to give up rather than waste money.

If you sent coins between your own wallets, recovery is also possible. For example, if you mistakenly sent from your Binance Chain wallet to your ETH wallet, you can find the lost coins using your private key. But if you sent to someone else's wallet, you'll need their cooperation. If it's a friend, they might help, but strangers usually won't. This is because the private key is the asset itself.

When sending from an exchange to a wallet, first check on the blockchain. If the funds are still within the exchange, customer service can handle it. If you sent to an unknown person's wallet, and they don't cooperate, unfortunately, there's nothing you can do. Blockchain transactions are irreversible. If someone claims they can recover assets without the other party's cooperation, that's a scam.

There are also cases where you send from a wallet to an exchange by mistake. I experienced this myself—sending DAI on the Matic chain to another network. The transfer succeeded, but it wasn't reflected in my account. After checking, I found it inside the exchange. After negotiating with customer service for several days, the funds finally came back, but I lost a significant amount in gas fees.

In any case, the most important thing is to double-check the recipient address and network multiple times before sending. Mistaking the network can be truly unrecoverable, so take your time and verify carefully. In the world of cryptocurrencies, such basic mistakes are the most costly.