Alfred Wallenstein (October 7, 1898 – February 8, 1983) was an American cellist and conductor. A successful solo and orchestral cellist in his early life, Wallenstein took up conducting in the 1930s a
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 0xfbe555a22c2bc0c20787706774c3b976c323d5155996c031f814da9631f75dab. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/563fc456-48f9-42e3-a473-77ce12f2792e.json and https://artists.proofprofile.net/proofs/artist/563fc456-48f9-42e3-a473-77ce12f2792e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Mozart: Le Nozze di Figaro (The Marriage of Figaro), K. 492
Heifetz Plays the Best of Bach, Mozart, Paganini & Vitali