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 0xc45f0dc21d9a43db25c96ffa8cd0f6148977b341a6e26c58573cd5dc35810a86. 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/c50f4951-b5b7-469f-9e1d-1ba50a8b0634.json and https://artists.proofprofile.net/proofs/artist/c50f4951-b5b7-469f-9e1d-1ba50a8b0634.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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 0xe7a2b08a486af44cb83834508e705676a29380e840aac876a16a9c9187f76539. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T20:36:26Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/2MHKMk3rVnz6YtoehYlfsd.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/2MHKMk3rVnz6YtoehYlfsd.
{"copyright_id":"0x00cbeadd632276baa05ea4103bd83ae16122664e8a074c91ef637952dc64d1bb","isrc":"QZHNA2150729","name":"Hokages VS. Pecados","registered_at":"2026-06-07T15:11:26Z","spotify_id":"4aaUtBRusnpRom8on72gCa","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00cbeadd632276baa05ea4103bd83ae16122664e8a074c91ef637952dc64d1bb. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/4aaUtBRusnpRom8on72gCa.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/4aaUtBRusnpRom8on72gCa.
{"copyright_id":"0x0b9f86614fd7c5268581fcc160f50a0c8a5c0dcee2e5789e14389c4c67da6ca1","isrc":"BKWAR2400022","name":"Guerra no Castelo Infinito","registered_at":"2026-06-18T22:15:46Z","spotify_id":"5mCdBBRGuGN9mc9PBKg1yA","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b9f86614fd7c5268581fcc160f50a0c8a5c0dcee2e5789e14389c4c67da6ca1. 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/5mCdBBRGuGN9mc9PBKg1yA.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/5mCdBBRGuGN9mc9PBKg1yA.