Arthur Greene is an American pianist and educator. Career Greene won gold medals at both the 1978 Gina Bachauer International Piano Competition and the William Kapell International Piano Competiti
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 0x90ba05d0400cfb3155e6816eaef20d4d9893ebe24aaec5885a8d8a632a167e18. Chain 2 (Bitcoin): anchored in block 953626 (2026-06-14T11:41:45Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2ee14a55-f775-4c39-b8a9-e099348bbced.json and https://artists.proofprofile.net/proofs/artist/2ee14a55-f775-4c39-b8a9-e099348bbced.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Mykola Lysenko: Complete Music for Violin & Piano