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 0x532851c5d660bd6c165ec6c58ae0a42dcdf53e7b255dbf67063bd28c148a5cff. Chain 2 (Bitcoin): anchored in block 954014 (2026-06-16T22:46:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/28426357-9146-4424-a8cd-4c46a1e74ff5.json and https://artists.proofprofile.net/proofs/artist/28426357-9146-4424-a8cd-4c46a1e74ff5.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Lost Is My Quiet: English Music in Purcell's Time
Come, Ye Sons of Art Away, Z. 323: Strike the Viol
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 0x5e68470bb524ab53953224a299ac4845e59085cba57b400a35bdce76ad41c9f1. 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/CAJ720330013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe50260d6ad4b0171bbfce6aedb03709dea776dd8ce1327afebf98f822994297c. 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/CAJ720330014.
The Prophetess, or the History of Dioclesian, Z. 627: Since from My Dear Astrea's Sight
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Welcome to All the Pleasures, Z. 339: Here the Deities Approve
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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
The Carnival of the Animals, R. 125: XIII. The Swan
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The Carnival of the Animals, R. 125: VII. The Aquarium
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Symphony No. 6 in F Major, Op. 68 'Pastoral': V. Allegretto
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Serse, HWV 40, Act I: Frondi tenere...Ombra mai fu
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Symphony No. 101 in D Major, Hob. I:101 'Clock': I. Adagio - Presto
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Peer Gynt Suite No.1, Op. 46: I. Prelude 'Morning'
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Concerto for 2 Violins in A Minor, RV. 522: I. Allegro
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Piano Sonata No. 14 in C-Sharp Minor, Op. 27 No. 2 'Moonlight': I. Adagio sostenuto (Excerpt)
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Waltzes, Op. 64: No. 1 in D-Flat Major 'Minute Waltz'
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Exsultate, Jubilate, K. 165/K. 158a: III. Alleluia (Allegro)
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String Quintet in E Major, G. 275: III. Minuetto in A Major
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x980751d3f205c89964eb5df95933420c37d35562e101863e660f89643a41fdc6. 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/GBAYC8800957.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x443a3087b8a168236c347a3b00317a364be1b5e8e27cca40b40eafdb89fb5b54. 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/GBAYC1103044.
Piano Sonata No. 11 in A Major, K. 331: III. Rondo alla turca
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Requiem Mass in D Minor, K. 626: VIII. Sequentia, Lacrimosa dies illa
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Septet in E-Flat Major, Op. 20: I. Adagio - Allegro con brio
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Piano Concerto No. 5 in E-Flat Major, Op. 73 'Emperor': I. Allegro
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Concerto for 4 Harpsichords in A Minor, BWV. 1065: I. Allegro
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Violin Concerto in D Major, Op. 61: I. Allegro ma non troppo
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String Quartet No. 14 in D Minor, D. 810 'La Jeune Fille et la mort': II. Andante con moto
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Solomon, HWV. 67, Act III: The Arrival of the Queen of Sheba
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Piano Concerto No. 2 in C Minor, Op. 18: II. Adagio sostenuto (excerpt)
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Rhapsody on a Theme of Paganini, Op. 43: Var. XVIII. Andante cantabile, a tempo vivace
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Magnificat in D Major, BWV. 243: I. Magnificat anima mea
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Triple Concerto in C Major, Op. 56: II. Largo
Orchestre National de l'Opéra de Monte-Carlo
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Symphony No. 2 in E Minor, Op. 27: I. Allegro moderato
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Sonata for Cello and Piano, L. 135: I. Prologue (Lent)
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Orchestral Suite No. 4 in D Major, BWV. 1069: Menuets I & II
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Vivaldi: The Four Seasons, Violin Concerto in E Major, Op. 8 No. 1, RV 269 "Spring": II. Largo e pianissimo sempre
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Vivaldi: Flute Concerto in D Major, Op. 10 No. 3, RV 428 "Il gardellino": I. Allegro
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Vivaldi: Gloria in D Major, RV 589: I. Gloria in excelsis Deo
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Vivaldi: Lute Concerto in D Major, RV 93: II. Largo
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Vivaldi: L'estro armonico, Violin Concerto in A Minor, Op. 3 No. 6, RV 356: I. Allegro
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Vivaldi: Stabat Mater in F Minor, RV 621: I. Stabat Mater dolorosa
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Vivaldi: Concerto for Two Mandolins in G Major, RV 532: II. Andante
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Vivaldi: L'estro armonico, Concerto for Four Violins in B Minor, Op. 3 No. 10, RV 580: I. Allegro
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Vivaldi: L'estro armonico, Concerto for Two Violins in A Minor, Op. 3 No. 8, RV 522 "Per eco in lontano": III. Allegro
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Vivaldi: Giustino, RV 717, Act 1: "Vedrò con mio diletto" (Anastasio)
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Vivaldi: La stravaganza, Violin Concerto in E Minor, Op. 4 No. 2, RV 279: I. Allegro
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Leclair: Violin Sonatas, Op. 2, Nos. 6, 7 & 9-12
Leclair: Violin Sonatas, Op. 2, Nos. 1-5, 8
Bach, C.P.E.: Sonatas for Keyboard and Violin
Chefs d'oeuvre de la musique classique française
Vivaldi: The Four Seasons, Violin Concerto in E Major, Op. 8 No. 1, RV 269 "Spring": I. Allegro
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Vivaldi: Guitar Concerto in D Major, RV 93: II. Largo
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Vivaldi: Guitar Concerto in D Major, RV 93: III. Allegro
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Vivaldi: Flute Concerto in D Major, Op. 10 No. 3, RV 428 "Il gardellino": II. Cantabile
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Vivaldi: Flute Concerto in D Major, Op. 10 No. 3, RV 428 "Il gardellino": III. Allegro
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Vivaldi: Mandolin Concerto in C Major, RV 425: I. Allegro
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Vivaldi: Mandolin Concerto in C Major, RV 425: II. Largo
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Vivaldi: Flute Concerto in G Minor, Op. 10 No. 2, RV 439 "La notte": V. Largo. Il Sonno
Rachel Brown/Hanover Band/Anthony Halstead
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Vivaldi: Concerto for Two Trumpets in C Major, RV 537: II. Largo
Jonathan Impett/Robert Farley/Hanover Band/Anthony Halstead
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Vivaldi: Piccolo Concerto in C Major, RV 443: I. Allegro
Orchestre de Chambre de Toulouse/Louis Auriacombe/Michel Sanvoisin
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Sonatas for Violin and Harpsichord - Johann Sebastian Bach
Leclair: Violin Sonatas, Op. 5 Nos. 9-12
Handel: Te Teum for Cannons & Chandos Anthem No.8
Leclair, J.-M.: Violin Sonatas, Op. 1, Nos. 9-12
Violin Sonata in B-Flat Major, Op. 1, No. 11: I. Vivace
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Leclair, J.-M.: Violin Sonatas, Op. 1, Nos. 5-8
Leclair, J.-M.: Violin Sonatas, Op. 1, Nos. 1-4
Schubert: Mass in G - Haydn: The 'Nelson' Mass
Handel: Complete Sonatas & Works for Violin and Continuo