Markus Poschner (born 1 February 1971) is a German conductor and pianist. Biography Born in Munich, Poschner studied at the University of Music and Performing Arts Munich with Hermann Michael. His me
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 0x31be67f3ff305763d43137aa0bae1e2d1e7adfcafc4c4361cd5846b44d3155e6. Chain 2 (Bitcoin): anchored in block 953817 (2026-06-15T18:10:31Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fc7b88a8-2192-4435-9570-5b8c959f581c.json and https://artists.proofprofile.net/proofs/artist/fc7b88a8-2192-4435-9570-5b8c959f581c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Hindemith: Mathis der Maler & The Four Temperaments - Schnittke: Piano Concerto
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 0x6e982e98241300061f29152cda89124fd94183cf64ad5e3eba728b03da794ae9. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/DEB332175201.
Mathis der Maler Symphony: II. Grablegung
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The Four Temperaments for Piano and Strings: Var. 2. Sanguinisch. Walzer
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Pyotr Ilyich Tchaikovsky, Symphony No. 5 & No. 6
Symphony No. 5 in E Minor, Op. 64: III. Valse. Allegro moderato
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R. Strauss: Violin Concerto, Op. 18 & Aus Italien, Op. 16
Strauss: Der Bürger als Edelmann Suite, Op. 60b, TrV 228c & Duett-Concertino, TrV 293
Bruckner: Symphony No. 3 in D Minor, WAB 103 "Wagner" (1877 Version, Ed. L. Nowak)
Bruckner: Symphony No. 7 in E Major, WAB 107 (Ed. P. Hawkshaw)
Bruckner: Symphony No. 2 in C Minor, WAB 102 (1872 Version, Ed. W. Carragan)
Bruckner: Symphony No. 5 in B-Flat Major, WAB 105 "Phantastische" (1878 Version, L. Nowak Edition)
Anton Bruckner: Symphony No. 4 in E-Flat Major, WAB 104 (1888 Version)
Bruckner: Symphony No. 4 in E-Flat Major, WAB 104 (1876 Version)
Bruckner: Symphony No. 3 in D Minor, WAB 103 "Wagner" (1873 Version, Ed. L. Nowak)
Symphony No. 3 in D Minor, WAB 103 "Wagner" (1873 Version, Ed. L. Nowak): III. Scherzo. Ziemlich schnell
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Bruckner: Symphony No. 4 in E-Flat Major, WAB 104 "Romantic" (2nd Version)
Eötvös: Psychokosmos für Cymbalom und Orchester & Takemitsu: Gitimalya, Konzert für Marimbafon und Orchester
Paër: Concerto - Paër: Concerto - Langlais: Choral médieval - Schneider: Echo - Widor: Salvum fac populum tuum - Langlais: Théme, Variations et Final - Bach: Cantata, BWV 29
Bruckner: Symphony No. 9 in D Minor, WAB 109 (1894 Version, Ed. L. Nowak)
Bruckner: Symphony in F Minor, WAB 99 "Study" (Ed. L. Nowak)
Bruckner: Symphony No. 1 in C Minor, WAB 101 (1891 Vienna Version, Ed. G. Brosche)
Bruckner: Symphony No. 3 in D Minor, WAB 103 "Wagner" (1889 Version, Ed. L. Nowak)
Bruckner: Symphony No. 1 in C Minor, WAB 101 (1866-1868 Linz version)
Symphony No. 1 in C Minor, WAB 101 (1866-1868 Linz version): I. Allegro
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Symphony No. 1 in C Minor, WAB 101 (1866-1868 Linz version): III. Scherzo. Schnell - Trio. Langsamer
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Bruckner: Symphony No. 2 in C Minor, WAB 102 (1877 Version, Ed. W. Carragan)
Bruckner: Symphony No. 8 in C Minor, WAB 108 (1887 Version)
Symphony No. 8 in C Minor, WAB 108 (1887 Version): I. Allegro moderato
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe3a4e96729d236369037cacf917a74c49892052e6322691d9c6f7b02e77948b. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/DEB262200661.
Bruckner: Symphony in D Minor, WAB 100 "Die Nullte"
Bruckner: Symphony No. 8 in C Minor, WAB 108 "Apocalyptic" (1890 Version)
Symphony No. 8 in C Minor, WAB 108 "Apocalyptic" (1890 Version): IV. Finale. Feierlich, nicht schnell
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Bruckner: Symphony No. 6 in A Major, WAB 106
Kol Nidrei, Op. 47 (Arr. for Viola and Orchestra)
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e04c91462b5a88c6a6781a5b97b4f094d0700ca96c104d718babea89e914d46. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/DEE861700754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2eea8bf854a2ece0bf9320091c33c0358522b7c355a37c4102213baa69beb1e. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/DEE861700755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf52fa0045c5f1f8578d0cbcbf804863502c61d881f2fc6e8ef63b1b194889795. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/DEYT92301006.
Langlais: Third Concerto - Helmschrott: Concerto 'Lemento' - Poulenc: Organ Concert in G Minor
Hindemith: Mathis der Maler Symphony: II. Grablegung
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Hindemith: The Four Temperaments for Piano and String Orchestra: Var. 4. Cholerisch. Vivace
Symphony No. 6 in B Minor, Op. 74 "Pathétique" - I. Adagio - Allegro non troppo