Martha Mödl (22 March 1912, Nuremberg – 17 December 2001, Stuttgart) was a German soprano, and later a mezzo-soprano. She specialized in large dramatic roles such as Isolde, Brünnhilde, and particular
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 0x9e161eedba48d60304ea6f94b44e4d625c81dee53fced1f4729d963cb52e9b97. Chain 2 (Bitcoin): anchored in block 953909 (2026-06-16T07:53:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/169d0da3-c4c4-49a9-a4a8-cb47a8e17eb4.json and https://artists.proofprofile.net/proofs/artist/169d0da3-c4c4-49a9-a4a8-cb47a8e17eb4.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Wagner: Tristan und Isolde, WWV 90 (Remastered 2023)
Tristan und Isolde, WWV 90: Prelude - Remastered 2023
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 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 0x60d28b72c78bf7557c92f942ee68c8fd85a1bdc032f42b7b6bab9010f6e237e6. Chain 2 (Bitcoin): anchored in block 960419 (2026-07-31T15:20:33Z), 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/USB8U2300128.
Wagner: Siegfried, WWV 86C & Parsifal, WWV 111 (Excerpts) [Live]
Wagner: Die Walküre, WWV 86B (Remastered 2021) [Live]
Elektra live Florence 1950 conducted by Dimitri Mitropoulos
Wagner: Die Walküre by Wilhelm Furtwängler
Richard Strauss: Die schweigsame Frau, Op. 80, TrV 265 (Live)
Verdi: Macbeth (Live Recordings 1950) [Sung in German]
Tristan und Isolde, WWV 90, Act I: Act I: Introduction
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26c5bad7b730bd389b769a4d2017304aa619baf8ac436aa0107f9983da1294ea. Chain 2 (Bitcoin): anchored in block 960376 (2026-07-31T09:09:19Z), 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/DEB950360301.
Martha Mödl Sings Händel, Purcell, Gluck, Mussorgsky and Others
Wagner: Götterdämmerung, WWV 86D (Remastered 2021) [Live at Auditorio del Foro Italico, Rome, 1953]
Verdi: Un ballo in maschera (Sung in German) [2020 Remastered Version]
Hoffmanns Erzählungen (Hoffmanns Tales) Sung in German
Singers of the Century: Martha Mödl sings Bizet, Verdi & Wagner
Wagner: Der Ring des Nibelungen, WWV 86 (Remastered 2021) [Live]
Puccini: Gianni Schicchi (Sung in German) [Bayerische Staatsoper Live]
Martha Modl: The Portrait of a Legend (1950-1982)
Dokumente einer Sängerkarriere - Martha Mödl
Hoffmanns Erzählungen, 2. Act Schöne Nacht, du Liebesnacht
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb99bda6c18e13588ccad7e7b4ade81f3d55d6d7a74dbcae5cb53fca876f3278c. Chain 2 (Bitcoin): anchored in block 960266 (2026-07-30T14:44:50Z), 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/USB8U1804618.