Leon McCawley (born 12 July 1973) is a British classical pianist. He studied with Heather Slade-Lipkin at Chetham's School of Music in Manchester, and with Eleanor Sokoloff at The Curtis Institute of
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 0x3a01754303523b5398a8aca48eaed3652104902d84493c0842f286a665e92bb5. Chain 2 (Bitcoin): anchored in block 953758 (2026-06-15T07:48:25Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b2069324-fe6c-4c27-b462-a8c8bb125940.json and https://artists.proofprofile.net/proofs/artist/b2069324-fe6c-4c27-b462-a8c8bb125940.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Natural Connection: Piano Music Inspired by the Natural World