GlossaryIntermediate
Digital Signature
Cryptographic proof that a message or transaction was authorized by a specific private key holder.
A digital signature is cryptographic proof, generated using a private key, that a specific message or transaction was authorized by whoever holds that key — verifiable by anyone using the corresponding public key, without ever exposing the private key itself.
Digital signatures are what let a blockchain network confirm a transaction's authenticity without any party needing to trust a central intermediary.
Examples
- Every crypto transaction includes a digital signature proving it was authorized by the sender's private key.
- A digital signature can be verified using a public key without ever revealing the corresponding private key.