DurandirSignature
Durandir Signature

Evidence anyone can check

Timestamping and signatures with open evidence. Every document and every signature leaves a SHA-256 fingerprint in a public, hash-chained and signed log that anyone can check without trusting us.

Check a document

Drop a file or click to choose one. The fingerprint is computed in your browser: the file is not uploaded.

Service public key

Key fingerprint
cf071526d5ceface640b82c68fed66fe148a5ea2a820828d1f1896ce0676ffec
JWK
{"crv":"Ed25519","x":"NV3Dn6k0Kg9tNbnp0YhASnI-7QTD5xNwtEnN4QZ-1vM","kty":"OKP"}

/.well-known/signature-key · Audit the full chain