Mohamed Ramadan may refer to: Mohamed Ramadan (fencer) (born 1931), Lebanese fencer Mohamed Ramadan (boxer) (born 1986), Egyptian boxer Mohamed Ramadan (footballer, born 1970), Egyptian footballer
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 0xda11b9bfbde2f3c7c9ea22697952a992f2c4a3bccb53be47c961af9b5e3be439. Chain 2 (Bitcoin): anchored in block 954533 (2026-06-20T08:57:02Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a5956801-c3f1-423d-b541-a9d3058134d7.json and https://artists.proofprofile.net/proofs/artist/a5956801-c3f1-423d-b541-a9d3058134d7.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).