Christopher Leonard (11 July 1927 – 1987) was an English footballer who made 26 appearances in the Football League playing as a centre half for Darlington in the 1950s. He also played non-league footb
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 0x1af0ef2f1fd56b30821e2151c188622f26536b4dfa5c4a1641d80076846ee735. Chain 2 (Bitcoin): anchored in block 954623 (2026-06-20T23:40:06Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/cb24d9b4-ad40-4a1a-8bf1-a543899a857b.json and https://artists.proofprofile.net/proofs/artist/cb24d9b4-ad40-4a1a-8bf1-a543899a857b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).