Someone asked: How can the blockchain tell that a transaction was really sent by you?
I usually answer like this: Digital signatures don’t encrypt transaction data, so the amount and addresses in an on-chain transfer remain visible to everyone. Signatures are reliable because of the discrete logarithm problem on elliptic curves: calculating a public key from a private key is quick, but deriving the private key from the public key is computationally infeasible.
$BTC 75020.68 (-1.14%)
Did you used to misunderstand this too?
#BTC
I usually answer like this: Digital signatures don’t encrypt transaction data, so the amount and addresses in an on-chain transfer remain visible to everyone. Signatures are reliable because of the discrete logarithm problem on elliptic curves: calculating a public key from a private key is quick, but deriving the private key from the public key is computationally infeasible.
$BTC 75020.68 (-1.14%)
Did you used to misunderstand this too?
#BTC
