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 0x4d3b78b9d6475a59eb29d957cfef725a96862608b400f3c87fa279e189f620f3. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/667a319d-0a0f-4022-a81c-72ea0b773119.json and https://artists.proofprofile.net/proofs/artist/667a319d-0a0f-4022-a81c-72ea0b773119.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Arrange and untune Vol. 2. Rossini: The Barber of Seville
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