thumb|The Seven Works of Mercy, by Frans II Francken, 1605. Mercy (, ; from Middle English, from Anglo-French , from Medieval Latin , "price paid, wages", from Latin , "merchandise") is benevolence
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 0x569922abf8d054b38aa0fe24b9390fb6f7866039571875c84db482b911e5b928. 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/833fc873-0f04-4f1c-9d73-29996176c619.json and https://artists.proofprofile.net/proofs/artist/833fc873-0f04-4f1c-9d73-29996176c619.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).