Overview
A digital signature is a cryptographic proof that a message was created by the holder of a private key. It authenticates transactions and messages without revealing the key. It is the basis of ownership in crypto.
How It Works
The signer hashes a message and signs it with their private key. Anyone can verify the signature with the corresponding public key. Signatures are deterministic and unique to the message and key.
Why It Matters
Digital signatures enable trustless authentication and ownership on blockchains. They secure transactions, identity, and governance. Understanding them is fundamental to crypto security.
Related Concepts
Digital Signatures relate to Public and Private Keys, EIP-712, and Transactions. They underpin ownership and identity.