The NDR Chor (North German Radio Choir) is the choir of the German broadcaster Norddeutscher Rundfunk (NDR), based in Hamburg. It was founded in 1946, with Max Thurn as the first director of then 55 s
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 0x9adadd25143386f89473fc0dcd79b61b32cd8b85abbf4aee161cbb17933facad. Chain 2 (Bitcoin): anchored in block 953724 (2026-06-15T01:43:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8b52b9ad-54da-41b5-9295-0b69381e3c58.json and https://artists.proofprofile.net/proofs/artist/8b52b9ad-54da-41b5-9295-0b69381e3c58.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Cardew: The Great Learning / Bedford: Two Poems For Chorus On Words
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
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Britten: War Requiem; Spring Symphony; 5 Flower Songs; Hymn to St. Cecilia
War Requiem, Op. 66 / Dies Irae: Dies irae (II)
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Five Flower Songs op.47: 2. The Succession of the Four Sweet Months
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Mass In C Minor, K.427 "Grosse Messe": 1. Kyrie
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Mass In C Minor, K.427 "Grosse Messe": 3b. Credo: Et incarnatus est
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Erkki-Sven Tüür: Symphony No.7 "Pietas"; Piano Concerto
Brockes Passion, HWV 48: No. 1, Sinfonie
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Brockes Passion, HWV 48: No. 8, Gott selbst, der Brunnquell
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Brockes Passion, HWV 48: No. 9, Ach, wie hungert mein Gemüte
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Brockes Passion, HWV 48: No. 10, Drauf sagten sie dem Höchsten Dank
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Brockes Passion, HWV 48: No. 11, Wir alle wollen eh’ erblassen
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Brockes Passion, HWV 48: No. 13, Weil ich den Hirten schlagen werde
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Brockes Passion, HWV 48: No. 14, Aufs wenigste will ich
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Brockes Passion, HWV 48: No. 16, Mich drückt der Sünden Zentnerlast
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Brockes Passion, HWV 48: No. 17, Ist’s möglich, dass dein Zorn sich stille
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Brockes Passion, HWV 48: No. 24, Greift zu, schlagt tot
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Brockes Passion, HWV 48: No. 30, O weh, sie binden ihn
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Brockes Passion, HWV 48: No. 37, Drauf krähete der Hahn
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Brockes Passion, HWV 48: No. 40, Schau, ich fall’ in stenger Buße
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Brockes Passion, HWV 48: No. 44, Erwäg, ergrimmte Natternbrut
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The Essentials: Greatest Classics, Vol. 1
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Piano Sonata No. 14 in C-Sharp Minor, Op. 27, No. 2, "Moonlight": I. Adagio sostenuto
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Thaïs: Thais, Act II: Meditation (version for violin and piano)
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Suite for Jazz Orchestra No. 2: Jazz Suite No. 2: VI. Waltz No. 2
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Serenade for Strings in E Major, Op. 22: II. Tempo di Valse
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Symphony No. 3 In D Minor / Part 1: I. Kräftig. Entschieden
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Symphony No. 3 In D Minor / Part 2: VI. Langsam. Ruhevoll. Empfunden
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Symphony No. 4 in G: I. Bedächtig. Nicht eilen - Recht gemächlich
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Symphony No. 8 in E flat - "Symphony of a Thousand" / Part One: Hymnus "Veni creator spiritus": "Veni creator spiritus"
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Symphony No. 10 in F sharp (unfinished): Andante - Adagio
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Symphony No. 4 in G: II. In gemächlicher Bewegung. Ohne Hast
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Symphony No. 1 in D Major: III. Feierlich und gemessen, ohne zu schleppen
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Symphony No. 2 in C minor - "Resurrection": III. Scherzo: In ruhig fliessender Bewegung
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Symphony No. 4 in G: III. Ruhevoll (Poco adagio)
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Symphony No. 1 in D Major: IV. Stürmisch bewegt
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Symphony No. 2 in C minor - "Resurrection": IV. "Urlicht". Sehr feierlich, aber schlicht "O Röschen rot!"
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Symphony No. 2 in C minor - "Resurrection": Va. Im Tempo des Scherzos. Wild herausfahrend
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Symphony No. 2 in C minor - "Resurrection": Vd. "Aufersteh'n, ja aufersteh'n wirst du" (Langsam. Misterioso)
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Messiaen: La Transfiguration de Notre Seigneur Jésus-Christ
Pärt: De Profundis; Górecki: Totus Tuus - 20th Century Choral Masterpieces
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Mozart: Complete Edition Box 16: German Operas
Mein Herze schwimmt im Blut, Cantata BWV 199: VIII. "Wie freudig ist mein Herz"
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Le nozze di Figaro, K. 492, Act III: No. 21, Sull' aria... Che soave zeffiretto "Letter Duet"
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Fidelio, Op. 72 / Act 1: "Mir ist so wunderbar"
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6 Bagatelles for Wind Quintet (1953, Arr. from Musica ricercata): I. Allegro con spirito
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6 Bagatelles for Wind Quintet (1953, Arr. from Musica ricercata): III. Allegro grazioso
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Advent und Weihnachten – Zum Entspannen und Genießen
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Es ist ein Ros entsprungen - Weihnachtliche Chormusik
Nine(Birds)Here [Works for Choir and Saxophone Quartet]
Quatrains Valaisans, Op. 206: I. Pays, arrêté à mi-chemin
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Quatrains Valaisans, Op. 206: III. L'Année tourne
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Quatrains Valaisans, Op. 206: IV. Chemins qui ne mènent nulle part
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9 Sacred Pieces: No. 1, Cheruvimskaja pesn' No. 1
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Stravinsky: Oedipus Rex, K047 / Symphony of Psalms, K052
A Quattro Cori (16-Stimmige Werke für vier Chöre von Fasch, Benevoli und Mendelssohn)
Augustyn Bloch - Denn Dein Licht Kommt / Du Sollst Nicht Töten
Bussotti: Cinque frammenti all'Italia / Huber: Versuche über Sprache
Bedford: 2 Poems / Ligeti: Lux Aeterna / Mellnäs: Succsim / Kopelent: Matka
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Mendelssohn: Symphony No. 2 in B-Flat Major, Op. 52, MWV A18 "Lobgesang"
Symphony No. 2 in B-Flat Major, Op. 52, MWV A18 "Lobgesang": Ib. Allegretto un poco agitato
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Symphony No. 2 in B-Flat Major, Op. 52, MWV A18 "Lobgesang": IIa. Alles was Odem hat
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Symphony No. 2 in B-Flat Major, Op. 52, MWV A18 "Lobgesang": VII. Die Nacht ist vergangen
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Symphony No. 2 in B-Flat Major, Op. 52, MWV A18 "Lobgesang": IX. Drum sing' ich mit meinem Liede
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Ligeti: Chamber Concerto; Ramifications; String Quartet No.2; Aventures
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Holst: The Planets / Ligeti: Lux aeterna
The Planets, Op. 32: I. Mars, The Bringer Of War
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The Planets, Op. 32: II. Venus, The Bringer Of Peace
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The Planets, Op. 32: III. Mercury, The Winged Messenger
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The Planets, Op. 32: IV. Jupiter, The Bringer Of Jollity
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The Planets, Op. 32: VI. Uranus, The Magician
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Brahms - Complete Choral Works (Collectors Edition)
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St. Matthew Passion, BWV 244: No. 68 Chorus I/II: "Wir setzen uns mit Tränen nieder"
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Oregan Bach Festival Orchestra and Choir
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Messe solennelle en La Majeur, Op. 12, FWV 61: V. Panis Angelicus
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Stabat mater, FP 148: Cujus animam gementem (Chorus)
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Stabat mater, FP 148: O quam tristis (Chorus a cappella)
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Stabat mater, FP 148: Quae moerebat (Chorus)
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