Public ledger

Every registration, in order.

The ledger is public: anyone can browse and search it. Opening a full certificate, with its downloads, uses 1 credit.

Records

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TSA granted

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Pending

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#Registered (UTC)FingerprintNoteTSA
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Fingerprint Registry

SHA-256 identifies content. An RFC 3161 token and a hash-chained ledger anchor it in time. Neither proves authorship or truth.

Timestamp authority: freetsa.org · RFC 3161 · SHA-256

Verifiable offline with OpenSSL

Created by Yannick Langlois

© 2026 Yannick Langlois. All rights reserved.