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 0x19023e63ad65068a6a83f3b6c09e692a1ff1b3b1952ea84e2a09d2ba6baa8697. Chain 2 (Bitcoin): anchored in block 953875 (2026-06-16T02:12:46Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0780c8e3-365d-4046-ad1c-e204e8a7bb02.json and https://artists.proofprofile.net/proofs/artist/0780c8e3-365d-4046-ad1c-e204e8a7bb02.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).