How can the blockchain know that a transaction was really sent by you?
A digital signature uses a pair of keys: the private key generates the signature, and the public key verifies it. You can’t derive the private key from the public key.
Ethereum transactions include a chain ID (EIP-155), so a signed transaction can’t be replayed on another chain.
When managing funds, the most important thing is to check the action type, contract address, and amount shown in the confirmation window before signing. If you don’t understand them, don’t sign.
$BTC 84196.01（+1.32%）
A digital signature uses a pair of keys: the private key generates the signature, and the public key verifies it. You can’t derive the private key from the public key.
Ethereum transactions include a chain ID (EIP-155), so a signed transaction can’t be replayed on another chain.
When managing funds, the most important thing is to check the action type, contract address, and amount shown in the confirmation window before signing. If you don’t understand them, don’t sign.
$BTC 84196.01（+1.32%）