thumb|Elisabeth Schumann Elisabeth Schumann (13 June 1888 – 23 April 1952) was a German lyric soprano who sang in opera, operetta, oratorio, and lieder. She left a substantial legacy of recordings. C
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 0x159f9cea18f9df69ea3b2f508ad4e6a4aad070e6eeffaf4dbf1b237a1a0946c9. Chain 2 (Bitcoin): anchored in block 954693 (2026-06-21T11:50:32Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e99fa217-81d5-47a2-90f5-df4097dbca73.json and https://artists.proofprofile.net/proofs/artist/e99fa217-81d5-47a2-90f5-df4097dbca73.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Rameau: Les Indes galantes, Quatrième entrée "Les sauvages": "Forêts paisibles" (Zima, Adario, Sauvages)
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 0xfee9c274a3a4f959f51b7a55aa1793bea0e57489ef9d85fe256ae653907659e0. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/GBAYC1302318.
Schumann: Waldszenen, Op. 82: No. 3, Einsame Blumen
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Dvořák: From the Bohemian Forest, Op. 68, B. 133: V. Silent Woods
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Grieg: Lyric Pieces, Book X, Op. 71: No. 4, Peace of the Woods
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Rutter: 8 Christmas Carols: No. 6, Down in Yon Forest
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Ligeti: Mátraszentimrei dalok: No. 4, Erdőbe, erdőbe
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Chabrier: Suite pastorale: III. Sous-bois
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Fauré: 3 Mélodies, Op. 85: No. 1, Dans la forêt de septembre
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Strauss II, J: Geschichten aus dem Wienerwald, Op. 325
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Bartók: For Children, Sz. 42, Book IV "Slovakian Folk Songs": No. 66, The Pine Forest. Poco Andante
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Wagner: Siegfried, Act 2: Forest Murmurs
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Rossini: Guillaume Tell, Act 2: "Sombre forêt" (Mathilde)
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Debussy: Pelléas et Mélisande, CD 93, L. 88, Act 1: Introduction
Orchestre De La Société Des Concerts Du Conservatoire
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Gluck: Orphée et Eurydice, Wq. 41, Act 1: Chœur. "Ah ! Dans ce bois tranquille et sombre" (Nymphes, Bergers, Orphée)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e2dfc78c4e81b22cc0ad681d89951a983fdf1e34138e521602c875cc08d4f01. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/FRZ118900930.
Villa-Lobos: Floresta do Amazonas, W551: Melodia Sentimental (Arr. Barbosa-Lima for Guitar)
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Tchaikovsky: The Nutcracker, Op. 71, Act I, Scene 2: No. 8, The Forest of Fir Trees in Winter. Journey Through the Snow
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Smetana: Má Vlast: IV. From Bohemian Woods and Fields
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69c2307c045198d09d820566b20a544cf9a49071b53b5a98bfadae4b5e0880c1. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/GBAYC8901640.
Strauss, R.: Rosenkavalier (Der) (Lehmann, Schumann) (1933)
La traviata, Act I: Un dì felice (Alfredo, Violetta, Gastone)
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Schumann, Elisabeth: Mozart and Viennese Operetta Aria Recordings (1926-1938)
Die Entführung aus dem Serail, K. 384: Welcher Kummer - Ach ich liebte
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Schumann, Elizabeth: Brahms / Mendelssohn / Schumann: Lieder (1930-1938)
Elisabeth Schumann Sings Favourite Schubert Lieber
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f67a21ead87341de1bcaa1877de222bfe18fce1e91fa2eb418cadf8cae1a8a0. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/GBAYC1001872.
Remastered Classics: Vintage Children's Music
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Looking High High High (Remastered 2014)
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Der Zigeunerbaron: Als flotter Geist, doch fruh verwaist
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bc26f255fe5447b235a9ee1bbeae940df7a7542e9cfe1a6875503238265bfb4. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/HKI190313102.
Der Vogelhandler: Schenkt man sich Rosen in Tirol
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6ddf1293b96eac045c775dfe5e70c00b66d7644ff4bcbd06c9d040d46023992. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/HKI190313109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x796781b7334eb1007ad5e4236bf73bd18d857b3cb9d0781fbc37389b63e934e5. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/FRZ119800273.
The Artistry of Elisabeth Schumann (Digitally Remastered)
Lebendige Vergangenheit - Elisabeth Schumann (Vol.2)
Durch Zärtlichkeit (Die Entführung aus dem Serail)
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Lebendige Vergangenheit - Elisabeth Schumann
Schumann, Elisabeth: Early Recordings (1915-1923)
Schumann, Elisabeth: Schubert Lieder (1927-1945)
Elisabeth Schumann's Swan Song (2024 Remastered Edition)
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3422377a8da79b6566f6e34470430d2a68bf16143f3d27b9a9240e853b8a091f. 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/USA560749852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3545becb360136857dc130f552e0e5292c6cf2e8631b383943593eaa1aa582d. Chain 2 (Bitcoin): anchored in block 960268 (2026-07-30T14:53:07Z), 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/NOFZP1772010.