Franco may refer to: Name Franco (name) Francisco Franco (1892–1975), Spanish general and dictator of Spain from 1939 to 1975 Franco Luambo (1938–1989), Congolese musician, the "Grand Maître" F
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 0x918ae3b23ce4f14fa2fe369c654ad4e6e89cc7833980b46ab9e5df25b02bcdb2. Chain 2 (Bitcoin): anchored in block 953909 (2026-06-16T07:53:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/096528e2-13ef-4a2f-a020-98656441be47.json and https://artists.proofprofile.net/proofs/artist/096528e2-13ef-4a2f-a020-98656441be47.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).