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 0x89654da85ac677d65760ce1a523e9ce2de9ea3eaf8818112dfd973802a2b3c54. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8880939a-5d44-4f29-8c56-98d3132418f1.json and https://artists.proofprofile.net/proofs/artist/8880939a-5d44-4f29-8c56-98d3132418f1.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
10 Chorale Preludes, BV B 27 (Excerpts): No. 2, Wachet auf, ruft uns die Stimme [After J.S. Bach's BWV 645]
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 0xc9ae42b725f9f69db4cb44045a05c8d4e38159be02ff8328b0974a192c0739f5. 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/JPP592100002.
Rhapsody on a Theme of Paganini (Arr. F. Kreisler for violin and piano)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6481f6b366a8f59956655edc278d1e26b7f0001cd521a2c54fc4c05a1c9c64bf. 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/HKI199327603.
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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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x492a04819c4e050b784eb545f8c915f57004b225b145bb0601b9e1034193c5a3. 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/HKI199493110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63ed804882ee5fce7b7d63c0794130c99cbfd663c0d6f562e2f926cca7760899. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/HKI199298726.
Suite Veneziana in A Minor, Op. 18: II. Barcarola
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8ea4c2025f59a6e67385416db5f6b285dd35502685e16ce1ad6e69ccd5869d1. 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/HKI192212425.
For Children, Vol. 1, Sz. 42 (Excerpts): No. 26, Dance with Me. Andante [Transcr. F. Ránki] [1945 Radio Version]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2bb05da197540c47b39630d84a864d87cf9c002b647c405c50cf4889da6212c. 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/HKI192105511.
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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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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35edb3f1b4ae94b5582455b7b14e5f6b5c9dff0dede0065882612849f0bb0ddb. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/HKI190423201.
Orchestral Suite No. 4, Op. 61, TH 34 "Mozartiana": III. Preghiera
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5 Lieder, Op. 49: No. 4, Wiegenlied (Arr. K.H. Schütz for Flute & Piano)
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Symphony in A Major, Op. 16 No. 2: II. Adagio
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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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6 Bagatelles, Op. 126: No. 5 in G Major: Quasi allegretto
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Chiquilín de Bachín (Arr. V. Coves for Guitar)
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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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x217c67020b33d38755c6c90a9ee5c8f636aba9eed692a0e8889bd3c3ab02fb96. 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/HKI199635812.
Fantasía para un gentilhombre: IV. Allegro con brio
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Valses poéticos: Melodico (Arr. J. McFadden)
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0797a46ab3f7532c48923752bf76d31bbc850df4bec2fad02e252bb4250fc94. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/HKI191408216.
El amor brujo, Scene I (1915 Version): No. 4, Danza del fin del día
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Suite española No. 1, Op. 47 (Arr. N. Kraft for Guitar): V. Asturias "Leyenda"
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78b286417a51f905b68b3e5e9db0a4ec4757d25268d6bba25a50be6f0399bc04. 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/HKI199201220.
Danzas fantasticas, Op. 22: Danzas fantasticas (Fantastic Dances), Op. 22: III. Orgia
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Palomo: Cantos del alma & Sinfonia a Granada
Moreno Torroba: Guitar Concertos, Vol. 2
Valses poeticos (arr. Peter Breiner): No. 3. Tempo de Vals lento
Polish National Radio Symphony Orchestra
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Lute Partita in C Minor, BWV 997: I. Prelude (arr. T. Hoppstock for guitar)
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Guitar Sonata, Op. 21, No. 3: III. Rondeau: Allegretto con poco moto
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Valses poeticos (arr. Peter Breiner): No. 6. Quasi ad libitum
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Chamber Concerto in D Major, RV 93: II. Largo (arr. G. Garcia for guitar and orchestra)
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Escenas Poeticas, Book 1 (arr. P. Breiner for guitar and orchestra): No. 1. Berceuse
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Escenas Poeticas, Book 1 (arr. P. Breiner for guitar and orchestra): No. 2. Eva y Walter
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CSSR State Philharmonic Orchestra, Kosice
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3 Piezas Espanolas (3 Spanish Pieces): No. 2. Fandango
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Julia Florida: Julia florida (Julia blooming)
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Escenas Poeticas, Book 1 (arr. P. Breiner for guitar and orchestra): No. 3. Danza de la rosa
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6 Etudes (Escuela de guitarra): Leccion No. 29
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Children's Corner: No. 1. Doctor Gradus ad Parnassum (arr. G. Garcia for guitar and orchestra)
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Guitar Sonata, Op. 21, No. 2: III. Allegretto
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Bardenklange, Op. 13: Elfenreigen (Dance of the Elves)
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25 Etudes, Op. 38: No. 6 in A Major: Andantino
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Guitar Sonata: III. Allegro non troppo e piacevole
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36 Caprices, Op. 20: Capriccio No. 2. Allegro
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Guitar Sonata, Op. 21, No. 1: III. Rondeau: Allegretto
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