Sergio Franchi ( , ; born Sergio Franci Galli; April 6, 1926 – May 1, 1990) was an Italian-American tenor and actor who enjoyed success in the United States and internationally after gaining notice in
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 0x93af3177ef7910db00f49f74122b1c83693520e6ae235a531b7aef18724e670f. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/427cf3ca-56d3-4a17-b7a4-d2ef6d1b62eb.json and https://artists.proofprofile.net/proofs/artist/427cf3ca-56d3-4a17-b7a4-d2ef6d1b62eb.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).