Antoine is a French given name (from the Latin Antonius meaning 'highly praise-worthy') that is a variant of Danton, Titouan, D'Anton, and Antonin. The name is most common in France, Switzerland, Bel
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 0xc7e15cc61bf4d656a971fbfb754d01ea3065cad533d016d2013720333cf67933. Chain 2 (Bitcoin): anchored in block 954500 (2026-06-20T04:47:29Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9b27e90c-35fb-4b70-ae2a-d0bf40fcbc75.json and https://artists.proofprofile.net/proofs/artist/9b27e90c-35fb-4b70-ae2a-d0bf40fcbc75.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).