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 0xbc979e9d96777bbe0c7ebf88f650f3363a9f05c7ab1e14daf9bb20662c975dc2. Chain 2 (Bitcoin): anchored in block 953997 (2026-06-16T20:07:57Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2ec1f3b3-3ce7-4add-9e87-fa486f473389.json and https://artists.proofprofile.net/proofs/artist/2ec1f3b3-3ce7-4add-9e87-fa486f473389.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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