Lothar Hensel (born 14 September 1961) is a German bandoneon player, composer and arrangeur. Life and career Born in Dormagen, studied school Music at the Berlin University of the Arts, majoring in
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 0x8abbfa2066623c08e7858e5c215982c81a9bfa8e2a3971205f13b408be79e3a8. Chain 2 (Bitcoin): anchored in block 953750 (2026-06-15T06:12:23Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a95b5287-84c5-45e3-89c9-525915638d31.json and https://artists.proofprofile.net/proofs/artist/a95b5287-84c5-45e3-89c9-525915638d31.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Astor Piazzolla: Tango Nuevo - eine sinfonische Hommage
Age of Passion (Lachrimæ - Tango for Viols & Bandoneon)
Electronic Tango Session - Bandoneon Meets Electronic