Cryptography & Privacy

Digital Signature

Proof, created with a private key, that a message or transaction was authorized by the key's owner and wasn't altered. Anyone can check it with the matching public key, yet no one can forge it. Every blockchain transaction carries one.

General education, not investment, legal or tax advice. Markets and regulation change quickly: where a definition depends on current law or on a recent event, check the latest coverage before relying on it.