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 0xf49977c40479ec692e655b665db4fb3f97add2eb7840f97e207557d5293d7812. Chain 2 (Bitcoin): anchored in block 953742 (2026-06-15T04:47:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a1dc4502-ac97-451c-a4e2-3892e37f904c.json and https://artists.proofprofile.net/proofs/artist/a1dc4502-ac97-451c-a4e2-3892e37f904c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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 0x7d89cd9919984e7e49394ed0ceae39384afa9f96d80ba1622d6341e9aea256e0. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/DEA559914723.
Toccata and Fugue in D Minor, BWV 565: Fugue
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffd03b5ec225645321d81bed5699d714891b85e71d598d5ee96f64d54cf660a1. 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/DEA559914725.
Trio Sonata No. 5 in C Major, BWV 529: I. Allegro
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9fd81a0a69a676ccb93711326a9bea3bdf8df168dc0074ea45233afd8a06cb4. 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/DEA559914726.
Fantasia and Fugue in G Minor, BWV 542: Fuge
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6 Schubler Chorales, BWV 645-650: Wachet auf, ruft uns die Stimme, BWV 645
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Prelude and Fugue in C Major, BWV 545: Praludium
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6 Schubler Chorales, BWV 645-650: Ach, bleib bei uns, Herr Jesu Christ, BWV 649
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Partite diverse sopra Christ, der du bist der helle Tag, BWV 766: Variation No. 2
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18 Chorales, BWV 651-668, "Leipziger Chorale": Fantasia super Komm, heiliger Geist, Herre Gott, BWV 651
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Partite diverse sopra Christ, der du bist der helle Tag, BWV 766: Variation No. 3
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ddfcae4a0343fa972119625b8aeac18011374ac6a6f00ff9acbfec0d4d0c5b1. 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/DEA550014744.
Prelude and Fugue in E-Flat Major, BWV 552, "St. Anne": Praeludium
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Partite diverse sopra Christ, der du bist der helle Tag, BWV 766: Variation No. 4
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Partite diverse sopra Christ, der du bist der helle Tag, BWV 766: Variation No. 7
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Prelude and Fugue in E Minor, BWV 548, "Wedge": Fuge
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Schumann: Kinderszenen, Op. 15: No. 1, Von fremden Ländern und Menschen
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Haydn: Toy Symphony: III. Finale. Allegro (Also Attributed to Mozart or Angerer)
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Poulenc: Villageoises, FP 65 "6 Petites pièces enfantines": No. 2, Staccato
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Satie: Sports et divertissements: No. 6, Colin-maillard
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Tansman: Pour les enfants, Quatrième recueil: No. 2, Cheval mécanique
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Prokofiev: Music for Children, Op. 65: No. 10, March
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Bizet: Petite suite from "Jeux d'enfants", Op. 22, WD 39: III. Impromptu "La toupie"
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Kabalevsky: 30 Pieces for Children, Op. 27: No. 2, Little Song
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Handel: Laudate pueri Dominum, HWV 237: I. Laudate pueri Dominum
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Bach: Notebook for Wilhelm Friedemann Bach: No. 8, Prelude in F Major, BWV 927
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Bartók: For Children, Sz. 42, Book I "Hungarian Folk Songs": No. 13, Runaway Horse. Andante
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Kosma: Suite symphonique d'après "Les portes de la nuit": IV. Chanson "Les enfants qui s'aiment"
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Shostakovich: Children's Notebook, Op. 69: No. 4, Merry Tale
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Vaughan Williams: 10 Blake Songs: No. 1, Infant Joy
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Beethoven: Piano Exercise in C Major, Hess 59
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Ravel: Ma mère l'Oye, M. 60: III. Laideronnette, impératrice des pagodes
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Debussy / Orch. Caplet: La boîte à joujoux, CD 136, L. 128: I. Prélude. Le sommeil de la boîte
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Khachaturian: Children's Album, Book I, Op. 62: No. 1, Andantino
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Zelenka: Laudate pueri, ZWV 81: I. Laudate pueri
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Mendelssohn: 6 Kinderstücke, Op. 72: No. 1, Allegro non troppo, MWV U171
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Vivaldi: Gloria in D Major, RV 589: I. Gloria in excelsis Deo
Academy of St Martin in the Fields Chorus
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CPE Bach: Notebook for Anna Magdalena Bach: March in D Major (Formerly Attributed to JS Bach as BWV Anh. 122)
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Gounod: 15 Mélodies enfantines: No. 15, L'arithmétique
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Ropartz: Jeunes filles: No. 5, La capricieuse
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Grieg: The Mountain Maid, Op. 67: No. 6, Kidlings' Dance (Version for Trumpet and Piano)
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Rossini: Péchés de vieillesse, Vol. 5 "Album pour les enfants adolescents": No. 10, Ouf ! Les petits pois
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Elgar: Dream Children, Op. 43: I. Andante
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Villa-Lobos: A prole do bebê No. 1, W140: VI. A pobrezinha "A boneca de trapo"
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Mussorgsky: The Nursery: No. 7, Sailor the Cat
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Mompou: Scènes d'enfants: No. 5, Jeunes filles au jardin
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Britten: 4 Chansons françaises: No. 3, L'enfance
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Pierné: Album pour mes petits amis, Op. 14: No. 6, Marche des petits soldats de plomb
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Berlioz: L'enfance du Christ, Op. 25, H 130, Pt. 2 "La fuite en Égypte": L'adieu des bergers. "Il s'en va loin de la terre" (Chœur)
Orchestre De La Société Des Concerts Du Conservatoire
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Tchaikovsky: Children's Album, Op. 39: No. 23, The Organ-Grinder Sings
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Saint-Saëns: Étienne Marcel, Act III: Divertissement. Entrée des écoliers et des ribaudes (Transcr. Debussy for 2 Pianos)
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Granados: Cuentos de la juventud, Op. 1: No. 1, Dedicatoria (Transcr. Isbin for Guitar)
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Franck: Les plaintes d'une poupée, FWV 20
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Brahms: 15 Volkskinderlieder, WoO 31: No. 4, Sandmännchen (Orch. Mackerras)
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Reger: 5 Neue Kinderlieder, Op. 142: No. 3, Maria am Rosenstrausch
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Pergolesi: Laudate pueri Dominum: VII. Sicut erat in principio
Coro della Radiotelevisione Svizzera Italiana
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Françaix: 15 Portraits d'enfants d'Auguste Renoir: No. 7, Fillette au chapeau bleu
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Regina Renata - Die Orgel in St. Katharinen Hamburg
Bach, J.S.: Influences of Böhm and Buxtehude
Süsse Stille (Barockmusik für Sopran, Flöte und Orgel)
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Christmas Wishes - Wundervolle Weihnacht
Mozart, Handel: Der Messias, K. 572, Pt. 1: No. 13, Aria. "Erwach, frohlocke, o Tochter von Zion" (After Handel's Messiah, HWV 56)
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Bach, J.S.: Influences of Bohm and Buxtehude
CHRISTMAS 2023 - Classical Music Meets Pop
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Trio Sonatas (The Art of Playing the Recorder, Vol. 4)
The Queen of Instruments: Selected Organ Works, Vol. 1
Festliche Stimmung - klassische Weihnachten