Cyril Frank Walter (September 16, 1915 – August 18, 1968) was an American café society pianist based in New York City for four decades. Dubbed the "Art Tatum of Park Avenue," he was praised for his ex
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 0xeafe47cde665c13fd57476c05b87aec132589a1f74bacc74b9b7a5b0f092dbc2. Chain 2 (Bitcoin): anchored in block 953997 (2026-06-16T20:07:57Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/269a8ecb-b087-46f4-860e-e0f796ae2e02.json and https://artists.proofprofile.net/proofs/artist/269a8ecb-b087-46f4-860e-e0f796ae2e02.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Tea for Two (The Music of Vincent Youmans 1931 - 1951)
Hits From The Great Astaire-Rogers Films