right|thumb|Galliard in Siena, Italy, 15th century The galliard (; ; ) was a form of Renaissance dance and music popular all over Europe in the 16th century. It is mentioned in dance manuals from E
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 0x414e2b16ccea2ed67ffd39e7f03811ba06a29a687634dd57d29909c0e00227b7. Chain 2 (Bitcoin): anchored in block 953877 (2026-06-16T02:39:16Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/07edf59f-e273-41dd-8a47-b711e548e8b2.json and https://artists.proofprofile.net/proofs/artist/07edf59f-e273-41dd-8a47-b711e548e8b2.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).