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 0xaa6610848b14ad90103dcb9195626006c1bf501a1ca6b51fc10cd9d6c7a8d653. 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/6409e2bf-a87a-4fb0-bbd2-0f9bbecd0079.json and https://artists.proofprofile.net/proofs/artist/6409e2bf-a87a-4fb0-bbd2-0f9bbecd0079.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).