Hamidou is both a surname and a given name. Notable people with the name include: Surname: Jules Hamidou (born 1987), Chadian footballer Nassuir Hamidou (born 2000), Comorian footballer Souleymanou H
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 0xfb44d2bc0b7324a3d9fb66ca783d8f54344d34bb1f209bf0c8d7137ff0d41558. 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/1233746a-0534-447c-99a1-a946639efffb.json and https://artists.proofprofile.net/proofs/artist/1233746a-0534-447c-99a1-a946639efffb.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).