1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d840f6891b5a7e055665b370c3bf2e52e44d9084d38a8f090739c037331d683. Chain 2 (Bitcoin): anchored in block 953907 (2026-06-16T07:39:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/15ad35b5-61a7-42ab-86d7-e8095174c30a.json and https://artists.proofprofile.net/proofs/artist/15ad35b5-61a7-42ab-86d7-e8095174c30a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Una canzone come gli 883 (feat. Max Pezzali, Lo Stato Sociale, CIMINI, Emis Killa, Eugenio In Via Di Gioia, Fast Animals and Slow Kids, Marco Giallini, J-Ax, Jake La Furia, La Pina, Pierluigi Pardo, Pinguini Tattici Nucleari, Nicola Savino)