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 0xd5392cb4c03dca767dcee28e01dff0928c22df43ca7b620527441afe6bd32304. 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/2fc2e962-c90e-4d97-8d4c-a0a4a79afb6d.json and https://artists.proofprofile.net/proofs/artist/2fc2e962-c90e-4d97-8d4c-a0a4a79afb6d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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{"copyright_id":"0x96a71633ef8191081ee715ccab5ed1fe9a79eed92cfd68dfbd9a414c32c597df","isrc":"FIMTA9500093","name":"Tyttö huutaa hii!","registered_at":"2026-06-09T22:31:23Z","spotify_id":"0qHFBJKlnB0AJpAhnWVSGB","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 0x96a71633ef8191081ee715ccab5ed1fe9a79eed92cfd68dfbd9a414c32c597df. 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/0qHFBJKlnB0AJpAhnWVSGB.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/0qHFBJKlnB0AJpAhnWVSGB.
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