Hamza Sultan Ali (8 August 1995 – 9 June 2016), also known as Hamza Shabbir, was a British Pakistani cricketer who played for Hampshire, Marylebone Cricket Club (MCC) Young Cricketers and Rawalpindi R
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 0xb9a4cdeda90a2ce412f6829ed2b3c58df473257e1a9f39514f7b8dae4133f73f. 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/d8342f3e-9665-4757-8e14-cc0cceb08333.json and https://artists.proofprofile.net/proofs/artist/d8342f3e-9665-4757-8e14-cc0cceb08333.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).