Josef Metternich (2 June 1915, in Cologne – 21 February 2005, in Feldafing) was a German operatic baritone. Metternich also appeared at the Royal Opera House in London, La Scala in Milan, and made hi
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 0xcdcafdae74dc697f7040f33126ee8cb9575b63099a40eca79db7d0d588085ae4. Chain 2 (Bitcoin): anchored in block 953879 (2026-06-16T02:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/09956026-4335-4a57-a87b-1cbb523732cc.json and https://artists.proofprofile.net/proofs/artist/09956026-4335-4a57-a87b-1cbb523732cc.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Offenbach: Hoffmanns Erzählungen [Electrola Querschnitte]
Puccini: Tosca - Opernquerschnitt in deutscher Sprache
Wagner: Lohengrin, WWV 75 (Bayerische Staatsoper Live)
Strauss: Friedenstag, Op. 81, TrV 271 (Recorded Live 1960)
Singers of the Century: Josef Metternich - Arias & Scenes Recital (2019 Remaster)
Verdi: La Traviata - Opernquerschnitt in deutscher Sprache
Richard Strauss: Die Frau ohne Schatten, Op. 65, TrV 234 (Recorded 1954) [Live]
Verdi: Macbeth (Live Recordings 1950) [Sung in German]
Donizetti: Lucia di Lammermoor [Electrola Querschnitte]
Legenden des Gesanges, Vol. 10: Josef Metternich (1951-1955)
Dokumente einer Sängerkarriere Josef Metternich III
Josef Metternich: Rare & Unreleased Recordings
Dokumente einer Sängerkarriere - Josef Metternich (Vol. 2)
Reich mir die Hand, mein Leben (Don Giovanni)
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 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. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36ae1e149e2ce200bfcc73118e65711912c8b26ac0a106679ca3cb87b2cdf913. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ATP139212503.
Dokumente einer Sängerkarriere - Josef Metternich
Jacques Offenbach: Les Contes D'Hoffmann (Sung In German 1941/1957)
Wagner: Le vaisseau fantôme, extraits (Mono Version)
Strauss: Arabella, Extracts (Mono Version)
Nordwestdeutsche Philharmonie / Berliner Symphoniker / Wilhelm Schüchter play: Giuseppe Verdi: 4 Extraits de "La Forza del destino"
Dokumente einer Sängerkarriere - Dietrich Fischer-Dieskau
Leoncavallo: Der Bajazzo (Pagliacci - Sung in German)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac09ebb5632a088b882b332b0bb82fa1bbaffc3b1a174ede77bed8c9bee97b82. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEHB51281912.
Lieder eines fahrenden Gesellen - Des Knaben Wunderhorn
Elisabeth Schwarzkopf Sings Richard Strauss