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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54c77a12cafe51a657a9615144a644bbf807c5aef3c10de384277b223da0a907. Chain 2 (Bitcoin): anchored in block 954647 (2026-06-21T04:36:58Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d6b852c9-f1ef-449f-97a3-17d8cf295285.json and https://artists.proofprofile.net/proofs/artist/d6b852c9-f1ef-449f-97a3-17d8cf295285.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Balearic De Luxe, Vol. 1 (Selected and Mixed By Sound Syndicate)