thumb|King Midas on a red-figure stamnos from Chiusi around 440 BC, British Museum Midas (; ) was a king of Phrygia with whom many myths became associated, as well as two later members of the Phrygia
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 0xa73bf418fa1fcbb5c992f1226c032e7c96a4430f1a66c51a57a8afc792f60fd9. Chain 2 (Bitcoin): anchored in block 954065 (2026-06-17T08:10:43Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3c644702-c667-4143-bab7-bb8408569251.json and https://artists.proofprofile.net/proofs/artist/3c644702-c667-4143-bab7-bb8408569251.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).