1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0xe5557688b359a17b21471bd989b04805873aec802c0d9009d089cf2988b14364. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6a93d72e-8d3b-4c22-9a50-b646b20ec7c0.json and https://artists.proofprofile.net/proofs/artist/6a93d72e-8d3b-4c22-9a50-b646b20ec7c0.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Petit Metier (Cult Version by Julian Casablancas)
Petit Metier - Cult Version by Julian Casablancas
Al Hassidi Terei - Live from Spotify NYC
Meet Me In The City - David Ferguson Mix
Meet Me in the City - David Ferguson Mix
1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. GET OTSBitcoinBlockVerifyURL → block OTSBitcoinBlock must exist at that height 3. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 4. GET OTSVerificationAPI → pre-computed 6-check result from server 5. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x815deb06fe4da0974dfd9a87f7ea332148ed79c8ba9f00ea57c836899c2d3964. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/0hMVQaEk3HhicXrtU5JW13.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/0hMVQaEk3HhicXrtU5JW13.
Festival international Nuits d'Afrique 33ème édition - Compilation 2019
{"copyright_id":"0x0d3b8810c69f9b4f9ac8b4c503b9f6c1af1f3361903e3c2a0dc7ffdea8db91fe","isrc":"GBKZV1700025","name":"Mali nord","registered_at":"2026-06-21T12:07:00Z","spotify_id":"1hGeuXnA3CXL3bOQ6hT4DV","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d3b8810c69f9b4f9ac8b4c503b9f6c1af1f3361903e3c2a0dc7ffdea8db91fe. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/1hGeuXnA3CXL3bOQ6hT4DV.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/1hGeuXnA3CXL3bOQ6hT4DV.