thumb|This is the Official Picture of the Italian mezzo-soprano Anna Maria Chiuri Anna Maria Chiuri (born October 3, 1968) is an Italian mezzo-soprano. She has performed at leading opera houses and c
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 0xa9722e40d9cbe6308a04fdc093d44686e5d92c141f063a6ee2682597c69486bd. Chain 2 (Bitcoin): anchored in block 954784 (2026-06-22T02:53:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f2950fa2-8de4-4b63-8f17-4d3ab81221aa.json and https://artists.proofprofile.net/proofs/artist/f2950fa2-8de4-4b63-8f17-4d3ab81221aa.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).