alt=Image of the composer in 2011|thumb|William Thomas McKinley in 2011. William Thomas McKinley (December 9, 1938 – February 3, 2015) was an American composer and jazz pianist born in New Kensington,
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 0x89286ff9a2ac355090a3c04e10bf46e6ab5fb2a3978aa2a2da6cfbb24f4bafdb. Chain 2 (Bitcoin): anchored in block 954615 (2026-06-20T22:44:50Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c6410af6-e71c-44df-a96d-d99efb48a3ee.json and https://artists.proofprofile.net/proofs/artist/c6410af6-e71c-44df-a96d-d99efb48a3ee.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
William Thomas McKinley: Three Poems of Pablo Neruda, Piano Concerto No. 3, and Symphony No. 4
...Secrets of the Heart - From Classic to Jazz
William Thomas McKinley: Music for Orchestra
William Thomas McKinley: Wind, Fire and Ice
Four Flutists - Music of Peter Homans & William Thomas McKinley
Copland, A.: Clarinet Concerto / Mckinley, W.T.: Clarinet Duets / Concerto for 2 Clarinets
William Thomas McKinley: The Complete Piano Trios