Eduard Melkus (born 1 September 1928 in Baden bei Wien) is an Austrian violinist and violist.International Who's Who in Classical Music 2003 Following the Second World War, Melkus dedicated himself t
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 0x75f4dda00a667aaf97cbe82909b8186fc45746bcfc2670a48dff688e3a4a1c88. Chain 2 (Bitcoin): anchored in block 953667 (2026-06-14T17:49:01Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5756be60-9a68-454f-aa50-4f9a7b5b74e7.json and https://artists.proofprofile.net/proofs/artist/5756be60-9a68-454f-aa50-4f9a7b5b74e7.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Mozart: The Piano Concertos (12 CDs, Vol.7 of 45)
Bach, J.C.: Keyboard Concertos, Opp. 1 & 7