Wallet Validator

The wallet address is a public sign of receipt of funds. Even if a character is wrong, the money is sent to the wrong address that cannot be recovered.

Validation check the address length, character set and checksum so you can find input errors before you transfer them.

The central mechanism for address verification is ** checksum**: Hashi calculation of address subject, with several bytes added at the end. Any input error leads to a mismatch and is rejected. Base58Check for bitcoin will attach four bytes to the end of the address and detect most spelling errors -- –** This is why the address can be "safe copyed" instead of having to be character-to-characterized** (of course, large transfers are still recommended for cross-checking 4-6 bits).

** Case is sometimes meaningful ** According to the Taifung EIP-55: a mixed case address that meets the specified rules is self-checked, while a full lowercase address is not verified. Therefore, changing the commingling case address to full lowercase, although most wallets still accept, would lose the verification protection. Special attention should also be paid to ** cross-chain transfers**: transfer of ERC-20 tokens to a bitcoin address or to a chain that does not support the token, where assets are usually not recoverable. ** The type of network identified before the transfer is more important than the address itself. **

Mainstream block chain address comparison