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 0x930a6e5873551619c01a905d13f6312fedcd3c1a08e8cc653be025035916e2fe. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a3ad88db-0810-4b56-a12b-083a8644bb77.json and https://artists.proofprofile.net/proofs/artist/a3ad88db-0810-4b56-a12b-083a8644bb77.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
{"copyright_id":"0x01729c28adf769bac6e3b879eaf41d3aecb05afb58a3bee7046cc7ed45930375","isrc":"QM6MZ2444605","name":"Nobody Else (feat. JVZEL)","registered_at":"2026-06-04T13:28:56Z","spotify_id":"7vCT5DQqEiqKRtlOY9vYjB","type":"track"}
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 0x01729c28adf769bac6e3b879eaf41d3aecb05afb58a3bee7046cc7ed45930375. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/7vCT5DQqEiqKRtlOY9vYjB.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/7vCT5DQqEiqKRtlOY9vYjB.
Creed III (Original Motion Picture Score)
{"copyright_id":"0xb4ca9a5345a335821979e42ddfbdac723befd6247888f2d041330f3fae8f1cb2","isrc":"USQX92301292","name":"Viene por Sangre - Felix Walkout","registered_at":"2026-06-05T16:34:14Z","spotify_id":"1NwvUAz3ppKi0PLDq5tIQ7","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4ca9a5345a335821979e42ddfbdac723befd6247888f2d041330f3fae8f1cb2. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/1NwvUAz3ppKi0PLDq5tIQ7.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/1NwvUAz3ppKi0PLDq5tIQ7.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb66f7fb0e1f2e4fbe9790c15c62eca3161f8a1264b78585f7e98e8f3dc9d5d95. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/1A9WRFjZZpiGylz2NFcW8D.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/1A9WRFjZZpiGylz2NFcW8D.