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 0x0941bdce0a87bf670ca40b087bebc1c7f6bb0e485c42f2fb793a823a74d011cb. Chain 2 (Bitcoin): anchored in block 954032 (2026-06-17T01:59:41Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3bf0c0eb-01e1-43a8-a712-921ea7802a25.json and https://artists.proofprofile.net/proofs/artist/3bf0c0eb-01e1-43a8-a712-921ea7802a25.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).