thumb|right|250px|Jean Muller, Luxembourg (2011) Jean Muller (born 11 December 1979) is a Luxembourgish classical pianist. He has received several international awards, performed worldwide, and made
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 0x5387693605405b088ffcbb2d147cba37ffcfa84deab2f5c6ac5ece96a2870d70. Chain 2 (Bitcoin): anchored in block 954025 (2026-06-17T00:32:47Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/38622270-c063-4a93-8803-e3dfff39219b.json and https://artists.proofprofile.net/proofs/artist/38622270-c063-4a93-8803-e3dfff39219b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Beethoven: The Complete Piano Sonatas (Vol. 8)
Beethoven: The Complete Piano Sonatas (Vol. 9)
Beethoven: The Complete Piano Sonatas (Vol. 4)
Beethoven: The Complete Piano Sonatas (Vol. 3)
Beethoven: The Complete Piano Sonatas (Vol. 7)
Beethoven: The Complete Piano Sonatas (Vol. 2)
Beethoven: The Complete Piano Sonatas (Vol. 6)
Beethoven: The Complete Piano Sonatas (Vol. 5)
Beethoven: The Complete Piano Sonatas (Vol. 1)