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 0x95c789e1436f08acc1a500e7909e0cfce65e3de288f3523b066bd847414c3d2f. Chain 2 (Bitcoin): anchored in block 954693 (2026-06-21T11:50:32Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e8aca35b-2cbd-459c-8c05-c922f5f4479b.json and https://artists.proofprofile.net/proofs/artist/e8aca35b-2cbd-459c-8c05-c922f5f4479b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Initiation (Original Motion Picture Soundtrack)
Behemoth (Original Motion Picture Soundtrack)
Last Man Down (Original Motion Picture Soundtrack)
The Big Pitch (Original Motion Picture Soundtrack)
Wild Boys (Original Motion Picture Soundtrack)
Follow Her (Original Motion Picture Soundtrack)
Herd (Original Motion Picture Soundtrack)
Recollector (Original Motion Picture Soundtrack)
Doppel (Original Motion Picture Soundtrack)
Me, Myself & The Void (Original Motion Picture Soundtrack)
Batman Beyond: Year One (Original Motion Picture Soundtrack)
O.C.D. (Original Motion Picture Soundtrack)
The Mannequin (Original Motion Picture Soundtrack)