Check a certificate of human creation.

Enter the certificate ID printed on it, like 7F3K-2Q9M. Every check runs here in your browser.

Certificate verification

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HMN (Human Made Notary) witnesses music being made and signs a certificate that a human made it, backed by the trail of work, not a guess. This page never shows or plays the music. It checks the certificate's signature, finds its trail entries in HMN's public append-only log, and shows the Bitcoin stamp that fixes that log in time, so the record can't be changed afterward, even by HMN.