🗒️ Technical principles | Digital signatures
· Key point: Ethereum transactions include a chain ID (EIP-155), so a signed transaction cannot be replayed on another chain.
· How to understand it: A digital signature proves two things at once: the transaction really came from the private key’s owner, and its contents haven’t been altered after signing.
· Practical tip: Before signing, check the operation type, contract address, and amount shown in the pop-up. If you don’t understand them, don’t sign yet.
$BTC 84043.99（+1.05%）
#BTC
· Key point: Ethereum transactions include a chain ID (EIP-155), so a signed transaction cannot be replayed on another chain.
· How to understand it: A digital signature proves two things at once: the transaction really came from the private key’s owner, and its contents haven’t been altered after signing.
· Practical tip: Before signing, check the operation type, contract address, and amount shown in the pop-up. If you don’t understand them, don’t sign yet.
$BTC 84043.99（+1.05%）
#BTC