Joel Krosnick (3 April 1941 – 15 April 2025) was an American cellist who performed as a soloist, recitalist, and chamber musician throughout the world for over 40 years. As a member of the Juilliard S
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 0x45c91dd2a85671f003b6d9ad0a264a2d2466e07ccd631d355671d34620170d20. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6f16500c-5d13-44b4-b5e8-e86e86f79f6d.json and https://artists.proofprofile.net/proofs/artist/6f16500c-5d13-44b4-b5e8-e86e86f79f6d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
The Virtuoso Cello: Works By Chopin, Faure, Servais, Saint-saens
Debussy, Janáček, Hindemith, Cowell: In the Shadow of World War I