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 0x8672fb49e02d2c2e0c9a27c21db3d6d132bd0e6c8313ced70d9a2725499847df. Chain 2 (Bitcoin): anchored in block 953938 (2026-06-16T11:35:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2008bb20-6f14-4f92-8529-c6a93d31e431.json and https://artists.proofprofile.net/proofs/artist/2008bb20-6f14-4f92-8529-c6a93d31e431.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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