Verifiable Calculation Certificates

Verify a certificate

Some CalcFleet results ship with a signed receipt: which formula ran, at which version, on which validated inputs, producing which outputs. Paste one below to check its signature and integrity. Authenticity, integrity, reproducibility and current trust are reported separately — there is deliberately no single “verified” stamp.

Certificate JSON

Paste the DSSE envelope (or the full certificate object from an API response). Nothing you paste is stored.

Certificates can also be verified offline, without trusting this page: fetch the issuer keys once from /.well-known/vcc-issuer.jsonand run the open verification steps (DSSE + Ed25519 + RFC 8785) yourself — see the developer docs. A certificate proves integrity and provenance of a calculation; it does not prove the inputs are true, nor that the formula fits any particular purpose, and it is not professional advice or a regulatory certification.