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 0x38814677b8ea8fa1c52980dbf171cd64e12f7b191b2acf2ff53078b468078796. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3dd03d09-3e52-4e74-bbe9-a41cd5b2f290.json and https://artists.proofprofile.net/proofs/artist/3dd03d09-3e52-4e74-bbe9-a41cd5b2f290.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
{"copyright_id":"0x327a2440cf0ee43f9fb9aeee454e0bb513024d5ffe653713c57df2f5e319994e","isrc":"QZPEW2414472","name":"liminal spaces - slowed + reverb","registered_at":"2026-06-29T14:15:50Z","spotify_id":"0ltyo51bScDbT66qM4ikoF","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 0x327a2440cf0ee43f9fb9aeee454e0bb513024d5ffe653713c57df2f5e319994e. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/0ltyo51bScDbT66qM4ikoF.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/0ltyo51bScDbT66qM4ikoF.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a77411ed26f8c01113e6b23ae73574253cbf5da0f03bb1b9775d4b341e34a34. 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/4p4RmM4qM2rlb0OOtPlCg4.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/4p4RmM4qM2rlb0OOtPlCg4.
{"copyright_id":"0x578eed2f48ac0ec56a719ea1ba498a8070ccc134b568f4564a8b8b7f76a9ed3d","isrc":"CA5KR2497633","name":"CÓSMICO SIDERAL - Sped Up","registered_at":"2026-06-11T18:37:57Z","spotify_id":"5zPOrziouQRUfPKxquSQMv","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x578eed2f48ac0ec56a719ea1ba498a8070ccc134b568f4564a8b8b7f76a9ed3d. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/5zPOrziouQRUfPKxquSQMv.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/5zPOrziouQRUfPKxquSQMv.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5f8968f3bcea17b1a742faa244d11211cdde7e5450ca1d23101ad9050308c97. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/1r7X7zDVI91TGFMPY97Qq6.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/1r7X7zDVI91TGFMPY97Qq6.