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 0x75c0991fca2689d1e0940920e422b1e7269afc0fd6656d440e128690c8e5ea49. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c66d268a-99f6-40b4-8ff5-424d31df8dd5.json and https://artists.proofprofile.net/proofs/artist/c66d268a-99f6-40b4-8ff5-424d31df8dd5.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Chopin, Bach, Beethoven, Schubert, Rachmaninov
'Arioso' - Bach, Mozart, Chopin, Ravel, Rachmaninov
Bach: Arioso (Arr. Cortot After Harpsichord Concerto No. 5 in F Minor, BWV 1056)
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 0xfe4457afd495de06601b50149536fb98a87adc5cc15d8a7ed17417c8e8ba6905. 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/GBAYC2200732.
Bach, JS: Goldberg Variations, BWV 988: Aria
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe5fa738b7cc115ca4bc62874bb2ab044e74f8650e3346b4d1d293ef052bdd81. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/GBAYC0800833.
Bach, JS: Goldberg Variations, BWV 988: Variation VII. Al tempo di giga
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeea527259cefddc9883fcbbddf5e2c97d1e54dc74ddf7075f312d17050e58a0c. 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/GBAYC0800840.
Bach, JS: Goldberg Variations, BWV 988: Variation VIII
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf0f87ca956f9d8c6ea30d83bc56af70eb50816f2eb99b5bc58729d1f87bf152. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/GBAYC0800841.
Bach, JS: Goldberg Variations, BWV 988: Variation IX. Canone alla terza
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f73b3ee808f761c18d6cc5a0cf3276784d14433d430ece7d3afa2bf0112fe19. 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/GBAYC0800842.
Bach, JS: Goldberg Variations, BWV 988: Variation X. Fughetta
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe255d21ea01752d76d28afbf6ca72db3e9f65a752605ada5c80bd77d48d3feed. 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/GBAYC0800843.
Bach, JS: Goldberg Variations, BWV 988: Variation XI
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4e94b139e4fccbec4c082178699a5108275ff7df6b4899304819cdadfba6bdc. 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/GBAYC0800844.
Bach, JS: Goldberg Variations, BWV 988: Variation XII. Canone alla quarta
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1bfd315f8bfa8b0376ff8e7148935783809f44c58aad5383ae409312a48ac29. 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/GBAYC0800845.
Chopin: Variations brillantes on Hérold's "Je vends des scapulaires", Op. 12: I. Introduction. Allegro maestoso
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4390110f918300120b1068d45a094e4afc7290bef1faeae0e37855b4d63fd187. 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/GBAYC1502174.
Chopin: Variations brillantes on Hérold's "Je vends des scapulaires", Op. 12: II. Theme. Allegro moderato
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2a57c34b728a66be153c3db313f65b999be385d891c3c31c98f12e1af852112. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/GBAYC1502175.
Chopin: Variations brillantes on Hérold's "Je vends des scapulaires", Op. 12: III. Scherzo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07dd3c030a0feb62037de126efd7a380508c81c33413b6c77b2ed3f617a0db65. 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/GBAYC1502176.
Chopin: Variations brillantes on Hérold's "Je vends des scapulaires", Op. 12: IV. Lento
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b2bc6096ac44c87d492fd72d999dc563206ed50c23c58df919cfbe00182928b. 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/GBAYC1502177.
Chopin: Variations brillantes on Hérold's "Je vends des scapulaires", Op. 12: V. Scherzo vivace
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe21de394839facc92fe76cd40402d73142a0285134551ee9861cefc1a31073f. 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/GBAYC1502178.
Chopin: Mazurka No. 38 in F-Sharp Minor, Op. 59 No. 3
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d3381ab2ef98a3e9f800658cc8c0b668ced5b7d9883e28ee4aa8ac1388e1dd3. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/GBAYC0302527.
Chopin: Piano Sonata No. 3 in B Minor, Op. 58: II. Scherzo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e315514148368efeadca5f9fe0b85e46f3ed8c8eae0779820c032a436d1d5da. 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/GBAYC0302521.
Chopin: Piano Sonata No. 3 in B Minor, Op. 58: IV. Finale. Presto non tanto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x668e09e593bb629fb5a27f1a41de4ebbc1c74f041847d27c3ba042d5d4422dd8. 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/GBAYC0302523.
Chopin: Mazurka No. 36 in A Minor, Op. 59 No. 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e1f721c8bee9f2e93904043a3903b5da6dd1b58de27400e841da06ee9e470a8. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/GBAYC0302525.
Chopin: Andante spianato et Grande polonaise brillante, Op. 22: Andante spianato
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e6dd409ec8a920de1cb39e096a1f0d2f051a2f1d8baeb574e29b8aa19dbfc15. 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/GBAYC0302531.
Chopin: 24 Preludes, Op. 28: No. 9 in E Major
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0805df8563895d1464738ecc80f13d3f9057cc6a4a6b4f1d3b6fcc0a9cbefee. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-21T16:35:09Z), 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/GBAYC1502187.
Chopin: 24 Preludes, Op. 28: No. 11 in B Major
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x059c7b31971cafca3cc092d39ab45c699868366beac0b0896e11572f1f4ba9b6. 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/GBAYC1502189.
Chopin: 24 Preludes, Op. 28: No. 12 in G-Sharp Minor
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x597ecc1ab6757e481591baa03f6444e3cfce996275c31519f8c99c1276614a36. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/GBAYC1502190.
Chopin: 24 Preludes, Op. 28: No. 16 in B-Flat Minor
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1271774c01714174330a5e066ffa3dc7c22accdc54a37b41dd17653994e62713. 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/GBAYC1502194.
Schubert: 4 Impromptus, Op. 90, D. 899: No. 1 in C Minor
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11a705918603c3179b034d967132fac90c6e2b22a7586e8b4c826dd5fd69e756. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/GBAYC0102902.
Schubert: 4 Impromptus, Op. 90, D. 899: No. 4 in A-Flat Major
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bb94a78de6842a5da38874c6436473a90ba8615d7edf179f3bfa08d34e3ecf4. Chain 2 (Bitcoin): anchored in block 957041 (2026-07-07T13:25:45Z), 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/GBAYC0102905.
Chopin: Fantaisie-impromptu in C-Sharp Minor, Op. Posth. 66
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8440908ba1d57c5e4a2661f1ee0eab4538ad60fcdf00027f574401f136c24c9. 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/GBAYC0302529.
Bach, JS: Goldberg Variations, BWV 988: Variation XIV
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Bach, JS: Goldberg Variations, BWV 988: Variation XVI. Overture
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfd927f6823c38c1005e28a888e43a9b21c7e9785b43a64c6ed740305316f228. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/GBAYC0800849.
Bach, JS: Goldberg Variations, BWV 988: Variation XIX
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6a4078a7c2c16335fce51e52dd34a8d75caf426f15ae4160e61673bbd053412. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/GBAYC0800852.
Mozart: Violin Sonata No. 18 in G Major, K. 301: II. Allegro
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Mozart: Violin Sonata No. 21 in E Minor, K. 304: II. Tempo di menuetto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x654b11bd9a150a53db83d2103dfd1aef425252d6bcb66c0108206973571d5983. 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/GBAYC1700551.
Mozart: Violin Sonata No. 26 in B-Flat Major, K. 378: I. Allegro moderato
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Mozart: Violin Sonata No. 26 in B-Flat Major, K. 378: II. Andantino sostenuto e cantabile
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Mozart: Violin Sonata No. 26 in B-Flat Major, K. 378: III. Rondeau. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97ca057110397114bc73ea7d49cdc43f25dbafa77eabca562a38f3b30b58ca86. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/GBAYC1700554.
Rachmaninov: Piano Concerto No. 2 in C Minor, Op. 18: II. Adagio sostenuto
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Bach, JS: Goldberg Variations, BWV 988: Variation XXII. Alla breve
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cd48671854151fe524f299db8bf82aae56b6c080a66beaa615be71db975eea8. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/GBAYC0800855.
Bach: Goldberg Variations, BWV 988 - Chopin: Preludes, Op. 28 - Mozart, Beethoven
Chopin: 24 Preludes, Op. 28: No. 1 in C Major
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Chopin: 24 Preludes, Op. 28: No. 2 in A Minor
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29abbdaa953e2b3819d22f7405dee274c717cfcee6c02d010617add3e3f59838. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/GBAYC1502180.
Chopin: 24 Preludes, Op. 28: No. 3 in G Major
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15a94daf7ea5ac02d064588a80c97b98ba8bd636ae8cb4bb632615e89f758e4e. 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/GBAYC1502181.
Chopin: 24 Preludes, Op. 28: No. 4 in E Minor
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Schubert: 4 Impromptus, Op. 90, D. 899: No. 2 in E-Flat Major
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d3381ab2ef98a3e9f800658cc8c0b668ced5b7d9883e28ee4aa8ac1388e1dd3. 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/GBAYC0302527.
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Bach, JS: Goldberg Variations, BWV 988: Variation I
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Bach, JS: Goldberg Variations, BWV 988: Variation II
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Bach, JS: Goldberg Variations, BWV 988: Variation III. Canone all'unisono
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Bach, JS: Goldberg Variations, BWV 988: Variation IV
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Bach, JS: Goldberg Variations, BWV 988: Variation V
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Bach, JS: Goldberg Variations, BWV 988: Variation VI. Canone alla seconda
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Schubert: Piano Sonata No. 21 in B-Flat Major, D. 960: II. Andante sostenuto
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Schubert: Piano Sonata No. 21 in B-Flat Major, D. 960: III. Scherzo
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Chopin: Nocturne No. 2 in E-Flat Major, Op. 9 No. 2
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Chopin: 24 Preludes, Op. 28: No. 5 in D Major
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Chopin: 24 Preludes, Op. 28: No. 6 in B Minor
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Chopin: 24 Preludes, Op. 28: No. 7 in A Major
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Chopin: 24 Preludes, Op. 28: No. 8 in F-Sharp Minor
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Chopin: 24 Preludes, Op. 28: No. 18 in F Minor
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Chopin: 24 Preludes, Op. 28: No. 19 in E-Flat Major
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Chopin: 24 Preludes, Op. 28: No. 20 in C Minor
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Chopin: 24 Preludes, Op. 28: No. 21 in B-Flat Major
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Beethoven: Violin Sonata No. 1 in D Major, Op. 12: I. Allegro con brio
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Beethoven: Violin Sonata No. 1 in D Major, Op. 12: II. Tema con variazioni. Andante con moto
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Beethoven: Violin Sonata No. 1 in D Major, Op. 12: III. Rondo. Allegro
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Schubert: Piano Sonata No. 20 in A Major, D. 959: IV. Rondo
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Chopin: 24 Preludes, Op. 28: No. 13 in F-Sharp Major
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Chopin: 24 Preludes, Op. 28: No. 17 in A-Flat Major
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Chopin: 24 Preludes, Op. 28: No. 22 in G Minor
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Chopin: 24 Preludes, Op. 28: No. 23 in F Major
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Chopin: 24 Preludes, Op. 28: No. 24 in D Minor
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Chopin: Berceuse in D-Flat Major, Op. 57
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Bach, JS: Goldberg Variations, BWV 988: Variation XXVI
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Bach, JS: Goldberg Variations, BWV 988: Variation XXVII. Canone alla nona
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Bach, JS: Goldberg Variations, BWV 988: Variation XXVIII
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Harpsichord Concerto No. 5 in F Minor, BWV 1056: I. Arioso (Arr. Cortot)
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Preludes, Op. 28: No. 21 in B-Flat Major (Cantabile)
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Grande Polonaise Op. 22: Andante spianato
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e6dd409ec8a920de1cb39e096a1f0d2f051a2f1d8baeb574e29b8aa19dbfc15. 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/GBAYC0302531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe4457afd495de06601b50149536fb98a87adc5cc15d8a7ed17417c8e8ba6905. 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/GBAYC2200732.