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 0x59a6401345d504f03438f687740a83ed0aa7e8d6c31b76fb4dbe33094e459a27. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c42bf5bc-3524-46bd-be5c-2f54f45658e2.json and https://artists.proofprofile.net/proofs/artist/c42bf5bc-3524-46bd-be5c-2f54f45658e2.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).