Ernst Wallfisch (27 May 1920 in Frankfurt am Main – 8 May 1979 in Northampton, Massachusetts) was a prominent viola soloist, recording artist and pedagogue, primarily remembered along with his wife, p
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 0xc72ffea0cc8c3504b3bd73efc0194ad64b2e2ff9649da8e2401d0f72f57d766b. 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/66d128f9-0980-4cf5-861d-eddddb4f71c1.json and https://artists.proofprofile.net/proofs/artist/66d128f9-0980-4cf5-861d-eddddb4f71c1.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Classical Masterpieces - Georg Friedrich Telemann: Ouverture-Suite for Viola da Gamba & Table Music Suite No. 1