Gina Cigna (6 February 1900 – 26 June 2001) was a French-Italian dramatic soprano. Biography Gina Cigna was born in Angers in the department of Maine-et-Loire on 6 February 2000 to parents of Italian
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd392cc485bf5f7fc911523db0d3bd959e911332e22229e39090871f8a30ad25. Chain 2 (Bitcoin): anchored in block 954631 (2026-06-21T02:46:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ce62695e-b059-4823-81dd-93c6e4db68d1.json and https://artists.proofprofile.net/proofs/artist/ce62695e-b059-4823-81dd-93c6e4db68d1.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).