thumb|Girolamo Frescobaldi in a 1619 engraving by Claude Mellan Girolamo Alessandro Frescobaldi (; also Gerolamo, Girolimo, and Geronimo Alissandro; September 15831 March 1643) was an Italian compose
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 0xdade7908621b9a5f39d90f166f91c59b3e35d4cdb2d9210be450b4f3d4fbbfb7. 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/f63eae30-fea1-4cbe-8e09-f789692964c6.json and https://artists.proofprofile.net/proofs/artist/f63eae30-fea1-4cbe-8e09-f789692964c6.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Frescobaldi: Toccate e partite d'intavolatura di cimbalo, libro primo (Bonus Track Version)
Girolamo Frescobaldi: Canzoni A Due Canti
Girolamo Frescobaldi: 11 Toccatas, Madrigale «Ancidetemi pur» (From Libro Secondo, Roma, 1627)
Frescobaldi: Partite, Balletti e Correnti dal Primo Libro
Frescobaldi: Fiori musicali, Op. 12 (Excerpts)
Frescobaldi: Partite cento sopra il Passachagli / 12 Toccate dal Primo Libro
Frescobaldi: Complete Unpublished Works for Harpsichord and Organ
In dominicis infra annum (Orgelwerke für dobro, Vol. 1)
Girolamo Frescobaldi: Opere per Clavicembalo
Frescobaldi: Canzoni, gagliarde, arie e correnti dalle toccate e partite d'intavolatura, Libro 2
Fontana plays Frescobaldi on Meantone Piano
Frescobaldi: Musiche inedite dai "Codici Chigi"
Frescobaldi Complete Keyboard Works, 5 - Fiori Musicali
Frescobaldi Complete Keyboard Works, 7 - Canzoni alla Francese in partitura (1645)
Frescobaldi Complete Keyboard Works, 6 - Il Secondo Libro di Toccate
Frescobaldi Complete Keyboard Works, 3 - Ricercari e Canzoni Francesi
Frescobaldi Complete Keyboard Works, 2 - Toccate e Partite, Libro Primo
Frescobaldi Complete Keyboard Works, 4 - Il Primo Libro di Capricci
Frescobaldi Complete Keyboard Works, 1 - Il Primo Libro delle Fantasie a quattro
Frescobaldi: Innocentiam a Uideare Malos Uelle Inritare
Frescobaldi: Fiori Musicali, 47 Pieces for Organ
Early Keyboard Masters (Works by Cabezón, Sweelinck, Frescobaldi)
Antologia di Trascrizioni per Chitarra dal Clavicembalo (Antology of Transcriptions for Guitar from Harpsichord)
Messa Della Domenica: Tocata avanti la Messa Della Domenica
Schola Gregoriana Gregoriani Urbis Cantores
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 0x01442edd86de2ea0655c581bf256148b77a8662d3431000e1ec2441971abb880. 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/GBSMU2957811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e60f30468f12d3fe79ca97271501bbcf56b283a1eaec1bd97dea42bfbea731e. 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/GBSMU2957813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d6e41be1190d320202825063cb89bd31835be889f8fd973c1aea1ff3b6bf130. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBSMU2957815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x219acd1d9bf39e942b92de5ff195d890f01d6c0e40ca5242d28db25867c8ce5c. 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/GBSMU2957817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x823978d74c0bf5a1b830b700c679661bd7e65cc0cf30f76eda1c15ab71001c8b. 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/GBSMU2957819.
Messa Della Domenica: Canzon Dopo la Pistola
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Messa Della Domenica: Recercar dopo il Credo
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Messa Della Domenica: Tocata Cromaticha Per la levatione
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Messa Della Domenica: Canzon post il Comune
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Messa Delli Apostoli: Tocata avanti la Messa Delli Apostoli
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x133a2c98b4628133ac7cf0afbc9965f65417e9cab52afacae0be187a76d2d217. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/GBSMU2957975.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4823dd3ef93a4873763722a89f24fae40df01cf28e73c29ff8a3747d32616741. 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/GBSMU2957979.
Messa della Madonna: Recercar Dopo il Credo
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Flute Music of the 16th & 17th Centuries
Frescobaldi: Toccate e Partite, Libro I & Capricci, Recercari, Canzoni
Frescobaldi: Messa sopra l'aria della Monica
The Choral Tradition - Bach, Handel, Mozart, Purcell...
Brahms: Warum ist das Licht gegeben dem Mühseligen, Op. 74 No. 1: III. (a) Siehe, wir preisen selig
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Handel: Messiah, HWV 56, Pt. 2, Scene 5: Chorus. "The Lord Gave the Word"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dba2e38a490615818c97db9858c33729a922a45907e569400162fee9fe67224. 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/GBAYC9202347.
Britten: A Ceremony of Carols, Op. 28: II. Wolcum Yole!
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x003ee44a5911548fa2a51c64e8456c080d7bc37dd95a8bd4c960dceb92420e45. 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/GBAYC0400325.
Brahms: Es ist das Heil uns kommen her, Op. 29 No. 1: Chorale
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Frescobaldi: Messa sopra l'aria della monica: IV. Sanctus
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Vivaldi: Magnificat in G Minor, RV 610: VIII. Sicut locutus est
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Bach, JS: Weihnachtsoratorium, BWV 248, Pt. 1: No. 5, Choral. "Wie soll ich dich empfangen"
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Handel: Saul, HWV 53, Act 1 Scene 1: Chorus. "Hallelujah" (Israelites)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7b8753deff0b4bd44b24825e0efaa751d3b8ee5afa8408f1aa1c3be76362daa. 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/GBAYC0201639.
Handel: Messiah, HWV 56, Pt. 1, Scene 4: Chorus. "Glory to God"
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb29293fb2fe0ccff3d1f74554666e890567e0ee38bfc0620fc476bdd347b249a. 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/GBAYC0000808.
Handel: Messiah, HWV 56, Pt. 1, Scene 5: Chorus. "His Yoke Is Easy"
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Handel: Coronation Anthem No. 4, HWV 261 "My Heart Is Inditing": I. My Heart Is Inditing
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Scarlatti, D: Te Deum in C Major: I. Te Deum laudamus
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Schubert: Gott im Ungewitter, Op. Posth. 112 No. 1, D. 985: Du Schrecklicher, wer kann vor dir
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Berlioz: L'enfance du Christ, Op. 25, H 130, Pt. 1 "Le songe d'Hérode", Scene 4: "Eh bien ! Par le fer qu'ils périssent !" (Hérode, Les Devins)
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Rachmaninov: Liturgy of St John Chrysostom, Op. 31: II. Praise the Lord, O My Soul
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Fauré: Requiem, Op. 48: VII. In Paradisum
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Handel: Saul, HWV 53, Act 1 Scene 1: Chorus. "The Youth Inspired by Thee, Oh Lord" (Israelites)
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Scarlatti, D: Magnificat in D Minor: I. Magnificat anima mea Dominum
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Handel: Saul, HWV 53, Act 3 Scene 5: Chorus. "Mourn, Israel" (Israelites)
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Bach, JS: Herz und Mund und Tat und Leben, BWV 147: No. 1, Chor. "Herz und Mund und Tat und Leben"
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Haydn: The Creation, Hob. XXI:2, Pt. 1: Trio and Chorus. "The Heavens Are Telling" (Chorus, Gabriel, Uriel, Raphael)
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Bach: Canon a 2 perpetuus in D Minor, BWV 1075
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Handel: Recorder Sonata in F Major, Op. 1 No. 11, HWV 369: II. Allegro
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Bach, JS: Goldberg Variations, BWV 988: Aria
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Bach, JS: Goldberg Variations, BWV 988: Variation III. Canone all'unisono
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Bach, JS: Harpsichord Concerto No. 5 in F Minor, BWV 1056: I. —
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Bach, JS: Harpsichord Concerto No. 5 in F Minor, BWV 1056: II. Largo
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Bach, JS: Harpsichord Concerto No. 5 in F Minor, BWV 1056: III. Presto
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Telemann: Nouveaux quatuors "Paris Quartets": No. 1 in D Major, TWV 43:D3: I. Prélude
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Telemann: Nouveaux quatuors "Paris Quartets": No. 1 in D Major, TWV 43:D3: III. Vite
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Telemann: Nouveaux quatuors "Paris Quartets": No. 1 in D Major, TWV 43:D3: IV. Gaiment
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Telemann: Nouveaux quatuors "Paris Quartets": No. 1 in D Major, TWV 43:D3: V. Modérément
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Bach, JS: Suite in E Minor, BWV 996: I. Prelude
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Bach, JS: Suite in E Minor, BWV 996: IV. Sarabande
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Bach, JS: Suite in E Minor, BWV 996: V. Bourrée
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Bach, JS: Suite in E Minor, BWV 996: VI. Gigue
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Purcell: Come Ye Sons of Art, Z. 323 "Ode for Queen Mary's Birthday": No. 1, Sinfonia
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Purcell: Come Ye Sons of Art, Z. 323 "Ode for Queen Mary's Birthday": No. 4, Chorus. "Come Ye Sons of Art Away"
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Purcell: Come Ye Sons of Art, Z. 323 "Ode for Queen Mary's Birthday": No. 5, Ritornello. "Strike the Viol"
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Purcell: Come Ye Sons of Art, Z. 323 "Ode for Queen Mary's Birthday": No. 7, Aria. "Bid the Virtues"
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Purcell: Come Ye Sons of Art, Z. 323 "Ode for Queen Mary's Birthday": No. 8, Aria. "These Are the Sacred Charms"
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Bach, JS: Violin Sonata No. 1 in B Minor, BWV 1014: I. Adagio
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Bach, JS: Violin Sonata No. 1 in B Minor, BWV 1014: III. Andante
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Frescobaldi: Il secondo libro di toccate: Gagliarda seconda
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Frescobaldi: Il secondo libro di toccate: Gagliarda quinta
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Balletto (Arr. for Harp and Baroque Guitar) - From "Vatican, Biblioteca Apostolica, MSS Chigi Q. IV.28, ff. 44-45v"
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