Reg Hall (20 March 1932 – 6 August 2013) was a former Australian rules footballer who played with Richmond in the Victorian Football League (VFL) and for East Perth in Western Australian Footba
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 0xa3c946cec858368a1b7bbba307d14b7075b584617211af90e1c3537749e913e9. 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/118aece3-b146-46e2-a2ae-4cbdc742d3d5.json and https://artists.proofprofile.net/proofs/artist/118aece3-b146-46e2-a2ae-4cbdc742d3d5.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).