Elisabeth Höngen (7 December 1906 – 7 August 1997) was a German operatic mezzo-soprano and singing-actress. She was particularly associated with Richard Wagner and Richard Strauss roles, and with Verd
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 0xd45d7e3a13cebf51da87a36d0ecea7e7389dcd8230ef266768621dc557a245b3. Chain 2 (Bitcoin): anchored in block 953742 (2026-06-15T04:47:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9b6120bb-e70d-46b0-a6ea-a6542253ae91.json and https://artists.proofprofile.net/proofs/artist/9b6120bb-e70d-46b0-a6ea-a6542253ae91.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Bizet: Carmen, WD 31 (Sung in German) [Live]
Beethoven: Symphony No. 9 in D Minor, Op. 125 "Choral"
Pelléas et Mélisande live 1962 Herbert von Karajan