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 0x91dbe0a728296d5997f903d55d5d8ad6a177cbf7f3e6585c379c7b1b498644d2. 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/ecb9e006-929c-4609-9f5c-2173fa1b50d6.json and https://artists.proofprofile.net/proofs/artist/ecb9e006-929c-4609-9f5c-2173fa1b50d6.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
{"copyright_id":"0x544cd5dcef2059b6d301f8f1e505014ffbf8c7ec4fb45daf701562250579ec9b","isrc":"ES71G2113933","name":"Não Quero Problemas","registered_at":"2026-06-06T20:15:40Z","spotify_id":"7EBzwfk7G0DLOKZLteKEea","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 0x544cd5dcef2059b6d301f8f1e505014ffbf8c7ec4fb45daf701562250579ec9b. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/7EBzwfk7G0DLOKZLteKEea.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/7EBzwfk7G0DLOKZLteKEea.
{"copyright_id":"0x544cd5dcef2059b6d301f8f1e505014ffbf8c7ec4fb45daf701562250579ec9b","isrc":"ES71G2113933","name":"Não Quero Problemas","registered_at":"2026-06-06T20:15:40Z","spotify_id":"5dN7Nnnfer6BhKM9BIelUh","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x544cd5dcef2059b6d301f8f1e505014ffbf8c7ec4fb45daf701562250579ec9b. 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/5dN7Nnnfer6BhKM9BIelUh.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/5dN7Nnnfer6BhKM9BIelUh.
{"copyright_id":"0x588e5549ba010f27a116edf146951d6496aaf6aaf10ddaebe2ac85f240a47aa6","isrc":"QM6N21995936","name":"Não Quero Problemas","registered_at":"2026-06-22T05:36:58Z","spotify_id":"1NHR3zMBx1k5LuzhsAMacp","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x588e5549ba010f27a116edf146951d6496aaf6aaf10ddaebe2ac85f240a47aa6. 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/1NHR3zMBx1k5LuzhsAMacp.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/1NHR3zMBx1k5LuzhsAMacp.
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