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 0x0b67c65673c3a651dd9d43d45cee7107e42f1c4c555e39e7f3eb61294c3d5f55. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/15171221-0371-41f9-940d-50e5f659165b.json and https://artists.proofprofile.net/proofs/artist/15171221-0371-41f9-940d-50e5f659165b.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
Suppé: Die Reise um die Erde in 80 Tagen (Version Without Narration)
Die Reise um die Erde in 80 Tagen (Version Without Narration): IIb. Allegro con fuoco
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 0x5bae236198d87f2e25c84901117f8d9b79c6575439bbab89d560f5395bcbda1f. Chain 2 (Bitcoin): anchored in block 960111 (2026-07-29T13:21:01Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI192130305 — a six-check JSON result.
10 Chorale Preludes, BV B 27 (Excerpts): No. 2, Wachet auf, ruft uns die Stimme [After J.S. Bach's BWV 645]
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Rhapsody on a Theme of Paganini (Arr. F. Kreisler for violin and piano)
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Carnival of the Animals, R. 125: XIII. The Swan (Arr. P. Vidal for Cello & Orchestra)
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Consolations, S. 172 "6 Pensées poétiques": No. 3, Lento placido
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Pavane, Op. 50 (Arr. H. Busser for Piano Trio)
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Suite bergamasque, L. 75: III. Clair de lune (Featured in "Man on Fire")
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Cello Suite No. 1 in G Major, BWV 1007: I. Prelude
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6 Klavierstücke, Op. 118: No. 2, Intermezzo in A Major. Andante teneramente
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III. Nicht schnell (Re-Orchestrated by G. Mahler)
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Piano Sonata No. 8 in C Minor, Op. 13 "Pathétique": II. Adagio cantabile
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3 Visions: No. 2, Summerland (Version for Violin & Orchestra)
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Sicilienne in E-Flat Major (Arr. T. Miteva for Cello & Chamber Orchestra)
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Suite Veneziana in A Minor, Op. 18: II. Barcarola
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For Children, Vol. 1, Sz. 42 (Excerpts): No. 26, Dance with Me. Andante [Transcr. F. Ránki] [1945 Radio Version]
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Prelude in D-Flat Major, VL 253 (Arr. J. Daunytė for Harp)
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Partita No. 7 in C Major (Arr. G. Buscemi for Guitar): II. Andante
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Harp Quintet in C Minor, AV 24: II. Adagio
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Piano Trio in F Major, Hob. XV:39 "Sonata IV": II. Andante
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Violin Sonata in G Minor, H. 542.5 (Attrib. J.S. Bach's BWV 1020) [Arr. T. Hoppstock for Flute & Guitar]: II. Adagio
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Keyboard Sonata in E-Flat Major, Op. 1 No. 1: II. Tempo di minuetto
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Orchestral Suite No. 4, Op. 61, TH 34 "Mozartiana": III. Preghiera
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Bagatelle No. 25 in A Minor, WoO 59 "Für Elise"
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Chiquilín de Bachín (Arr. V. Coves for Guitar)
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Herz und Mund und Tat und Leben, BWV 147, Pt. 2: No. 10, Jesus bleibet meine Freude (Arr. M. Hess for Piano)
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5 Lieder, Op. 49: No. 4, Wiegenlied (Arr. K.H. Schütz for Flute & Piano)
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Silhouettes d'enfants, Op. 43: No. 4, Barcarolle
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Suite antique (Version for Guitar) [Excerpts]: I. Prélude
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Samson et Dalila, Op. 47, R. 288: Printemps qui commence (Version for Violin & Piano)
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Symphony in A Major, Op. 16 No. 2: II. Adagio
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La fiancée du roi de Garbe, S. 49 (Excerpts): Act III Mélodrame
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Flute Sonata in E-Flat Major, BWV 1031: II. Siciliano (Arr. D. Sosin for flute and harp)
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Scenes from Childhood, Op. 15: VII. Träumerei
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Symphony in G Major, Op. 11 No. 1: II. Andante
Joseph Boulogne Chevalier de Saint-Georges
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5 Lieder, Op. 105 (Excerpts Arr. K.H. Schütz for Flute & Piano): No. 1, Wie Melodien zieht es mir
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6 Bagatelles, Op. 126: No. 5 in G Major: Quasi allegretto
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Was mir behagt, ist nur die muntre Jagd, BWV 208 "Jagdkantate": No. 9, Schafe können sicher weiden (Arr. E. Patri for Piano)
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3 Songs, Op. 7, No. 1. Après un rêve: 3 Songs, Op. 7: No. 1, Après un rêve (Arr. For cello and piano)
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Spiegel im Spiegel (Version for Violin and Piano)
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Schwanengesang, S. 560: Schubert - Schwanengesang, S. 560/R. 245: No. 7, Standchen (Leise flehen meine Lieder) [After F. Schubert]
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Don Juan: IV. Divertissement No. 2 (After Mozart's K. 421)
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Marschner: Overtures & Stage Music, Vol. 2
Marschner: Overtures & Stage Music, Vol. 1
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Der Fischer und das Milchmädchen: Overture
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Der Fischer und das Milchmädchen: I. Allegretto galante
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Der Fischer und das Milchmädchen: II. Air de Chasse
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Der Fischer und das Milchmädchen: III. Allegro furioso
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Der Fischer und das Milchmädchen: IV. Allegretto scherzando
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Der Fischer und das Milchmädchen: V. Corps de ballet
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Der Fischer und das Milchmädchen: VI. Air de Chassé par Écho
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Der Fischer und das Milchmädchen: VII. Allegretto galante
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Der Fischer und das Milchmädchen: VIII. Andantino
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Der Fischer und das Milchmädchen: IXa. Pas de deux
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Der Fischer und das Milchmädchen: IXb. Andantino pastorale
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Der Fischer und das Milchmädchen: X. Allemande
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Der Fischer und das Milchmädchen: XI. Allegretto ma non troppo
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Der Fischer und das Milchmädchen: XII. Andantino
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Der Fischer und das Milchmädchen: XIII. Molto moderato
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Der Fischer und das Milchmädchen: XIV. Pas de deux
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Der Fischer und das Milchmädchen: XV. Allegro furioso
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Der Fischer und das Milchmädchen: XVI. Andante agitato
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Der Fischer und das Milchmädchen: XVII. Vivace
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Der Fischer und das Milchmädchen: XVIII. Corps de ballet
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Der Fischer und das Milchmädchen: XIX. Pas seul
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Der Fischer und das Milchmädchen: XX. Pas de trois
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Der Fischer und das Milchmädchen: XXI. Finale
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Wirt und Gast (Excerpts): Türkischer Marsch
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Lestocq, ou l'intrigue et l'amour, S. 24 (Excerpts): Act II Entr'acte
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6da8b9499eee8843d896184306c819b2b2ee957073a7b116fca6594a22a7a398. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI191940209 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7be3630d9dc77f05eddc62ac61dee2c7a65bac8ea14da7231f0677eed687734b. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI191940211 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19cdb9dfba74a6a474eb5bdf3be2831e89408173510adfe41748e636c756c271. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI191940212 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd383c5dde109f0ff8292ea3ff5743a836e41efb8aa84048167cb0f717dfc884. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI191940214 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fc9a56100015d42a55796e85f7b5af4bc8d68214ee163f5208669ed379ed104. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI191940215 — a six-check JSON result.
Le maçon, S. 13 (Excerpts): Entr'acte to Act III
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34b77e1335403829bc95dd24725462e06ae23ec9a983df71cc5bf6fbf8ec5635. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI191906502 — a six-check JSON result.
Emma, ou la promesse imprudente, S. 6 (Excerpts): Entr'acte to Act II
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3de7065f6c3e867b6f962d771bd424335215be035fc23b2ccb93b7ba41812873. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI191906509 — a six-check JSON result.
Emma, ou la promesse imprudente, S. 6 (Excerpts): Entr'acte to Act III
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c772c72377a2905e56e17661cf449d18b4b6795e6585099628c055c2561ec1e. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI191906510 — a six-check JSON result.
La bergère châtelaine, S. 5 (Excerpts): Entr'acte to Act II
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99ed533b3c73ef252fc21d5a205832917342b33b019f505f24f8a597e90ae00d. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI191906514 — a six-check JSON result.
La bergère châtelaine, S. 5 (Excerpts): Entr'acte to Act III
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ad7e4a68f96819a812e91897347dade42e4b3d0d44f2bb8b911a2cd7a80d939. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI191906515 — a six-check JSON result.
La fille mal gardée: Clog Dance (Arr. D. Stone for Orchestra)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c4e3f514db2023e27d793e68f2af815031a350fa72cb74b05946200d1d1638c. Chain 2 (Bitcoin): anchored in block 960247 (2026-07-30T10:42:33Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI192244001 — a six-check JSON result.
La fille mal gardée: Clog Dance (Arr. J. Lanchbery for Orchestra)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84742e59f63a2e1cc391b5d2e192058ad4fd29749deffa9c9ca5d6d3a5ef7e93. Chain 2 (Bitcoin): anchored in block 960422 (2026-07-31T15:27:29Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI192244002 — a six-check JSON result.
Chefs d'oeuvre de la musique classique française