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 0xff3242e2c16b442ca3a029dfb97b7a91cb83be86b385065b08b184e5dac791e6. Chain 2 (Bitcoin): anchored in block 954097 (2026-06-17T13:13:51Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7afb08a7-8539-4614-b6f6-f3fd8ea337c2.json and https://artists.proofprofile.net/proofs/artist/7afb08a7-8539-4614-b6f6-f3fd8ea337c2.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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