right|thumb|A Burdizzo, used primarily on goats, small calves, and sometimes on humans. The Burdizzo is the name brand of a company that makes a castration device (an emasculatome) which employs a l
1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 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 0x949c74d3c535b0b19711b4ca57824269b705b89cff83d1dc15b887c84672f858. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8359bb9c-d2f8-4b60-9e72-7e5e09a20bf6.json and https://artists.proofprofile.net/proofs/artist/8359bb9c-d2f8-4b60-9e72-7e5e09a20bf6.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).