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 0xb03428234812f65bccd1f01b00c9061702180503a23ef5d1fdb5ba485cc36a33. 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/76bcfe34-9556-4216-80e6-e8b6da600b8c.json and https://artists.proofprofile.net/proofs/artist/76bcfe34-9556-4216-80e6-e8b6da600b8c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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{"copyright_id":"0x8bfd0e969a0c722c3858df39abbdf954de4fbcdf0821fb247092454b197e8427","isrc":"USA4D0617535","name":"Warmest Part of the Winter","registered_at":"2026-06-20T23:59:03Z","spotify_id":"1QCWihALaWAyDimdSQIs9P","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 0x8bfd0e969a0c722c3858df39abbdf954de4fbcdf0821fb247092454b197e8427. 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/1QCWihALaWAyDimdSQIs9P.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/1QCWihALaWAyDimdSQIs9P.