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 0xbeabbc1cc3348ecbaac9a69119bd45eb275e4a1184f0d6b7c6a056b5c584e040. Chain 2 (Bitcoin): anchored in block 954631 (2026-06-21T02:46:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ce3dbfb7-4501-4236-a0a9-953a4e932ca0.json and https://artists.proofprofile.net/proofs/artist/ce3dbfb7-4501-4236-a0a9-953a4e932ca0.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
La stessa strada (Original Motion Picture Soundtrack)
Tommy (Original Motion Picture Soundtrack)
Classical Noise: Moonlight's Beat Sonata
Classical Noise: D Minor Toccata Baroque Beat
Autunno (Original Motion Picture Soundtrack)
Out of the Mountain (Orobie Ultra Trail)