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 0x5b55beaf6170e26f6ab87016c61d153ec8343690c2b16da9da6c36ad9e3e3886. 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/f7c03789-6fa7-4f1d-8fe1-1fe492da888f.json and https://artists.proofprofile.net/proofs/artist/f7c03789-6fa7-4f1d-8fe1-1fe492da888f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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{"copyright_id":"0x95058bc3375fc0965572e711b56932a11f2eccd5f48845602ed30b7aa0eb18a1","isrc":"JPV752105099","name":"hello there feat. Plastic Plastic","registered_at":"2026-06-22T06:03:24Z","spotify_id":"6BewAtDSkxHMh5vTskjJs7","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 0x95058bc3375fc0965572e711b56932a11f2eccd5f48845602ed30b7aa0eb18a1. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/6BewAtDSkxHMh5vTskjJs7.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/6BewAtDSkxHMh5vTskjJs7.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9998d751e75fd014896b5320d51fb667e9eba86d74dc86331b65da15938f82b9. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/7tKXX85MSaVD5ctgS8WelE.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/7tKXX85MSaVD5ctgS8WelE.