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 0xc4278c961dfb587608834d27694e9944e6f4bc3683224d9843152e1c0d76a452. Chain 2 (Bitcoin): anchored in block 954650 (2026-06-21T04:51:12Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d8e8c0c6-9e1e-4814-8898-60cf0ef6dbef.json and https://artists.proofprofile.net/proofs/artist/d8e8c0c6-9e1e-4814-8898-60cf0ef6dbef.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
Violin Concerto No. 4 in F Minor, RV 297 "L'inverno": I. Allegro non molto
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 0x650a202d4b2e5b9c5c31d992845ffc155f13657119d7f1297ffa306df47f13ab. Chain 2 (Bitcoin): anchored in block 960187 (2026-07-30T01:34:28Z), 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/GBAYD8900157 — a six-check JSON result.
Études d'exécution transcendante, S. 139: XII. Chasse-neige
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54fe20e0a6c4841773e421fa1736ab6dca7adaa11e1480ef69e5ceb01cfd5b14. Chain 2 (Bitcoin): anchored in block 960250 (2026-07-30T11:13:28Z), 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/GBAYC8800624 — a six-check JSON result.
Violin Sonata No. 5 in F, Op. 24 'Spring': II. Adagio molto Espressivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58470b265d051fd7004c4c2838d6e7acf3d6c960694f7fb118ec0cbdc7f9dc48. 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/NLY331211945 — a six-check JSON result.
Violin Sonata No. 5 in F, Op. 24 'Spring': III. Scherzo: Allegro Molto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a09f280a38048cf872cec8d6543e0f41d2aea2210a98fcc3a6d04ebed73dcd7. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLY331211946 — a six-check JSON result.
Violin Sonata No. 5 in F, Op. 24 'Spring': IV. Rondo: Allegro ma non Troppo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05bb796a62071ad5088020c05c37435d51d589afd442dded99bbb1ce57a29859. 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/NLY331211947 — a six-check JSON result.
Violin Sonata No. 1 in A Minor, Op. 105: II. Allegretto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13f4bf2dc7c1e5ebafb06be8cd8a9c630c10bc66361164340d479fdcbc477e5b. Chain 2 (Bitcoin): anchored in block 960157 (2026-07-29T22:12:10Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLY331507077 — a six-check JSON result.
Violin Sonata No. 1 in A Minor, Op. 105: III. Lebhaft
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90fb4349934595ea4d1e30b484f629ac632bf1c438c070639c3ad1944f70359e. 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/NLY331507078 — a six-check JSON result.
Violin Sonata No. 3 in C Minor, Op. 45: II. Allegretto espressivo alla romanza
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5f0fc59e178435c366f8dd1909be78a57e4c1bd682b88da589a902e17015b71. Chain 2 (Bitcoin): anchored in block 960153 (2026-07-29T21:57:12Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLY331305270 — a six-check JSON result.
Violin Sonata No. 3 in C Minor, Op. 45: III. Allegro animato
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0610d8a5924cf287d17ef1be8386ba80b43fc9493504403d3180c2da428186e2. Chain 2 (Bitcoin): anchored in block 960145 (2026-07-29T21:13:37Z), 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/NLY331305271 — a six-check JSON result.
Sonata No. 2 in A Major, Op. 100: II. Andante tranquillo - Vivace - Andante - Vivace di più - Andante - Vivace
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf72a6a5e835c0974c92ec69ddb1cf1e780f9a7350e84446f9c225762866b374. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLY331405618 — a six-check JSON result.
Sonata No. 2 in A Major, Op. 100: III. Allegretto grazioso, quasi Andante
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe51c89b6ed066a7daba2b0bb96612240472932401555023d94debf0ea8208bf1. Chain 2 (Bitcoin): anchored in block 960266 (2026-07-30T14:44:50Z), 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/NLY331405619 — a six-check JSON result.
Violin Sonata No. 2 in E-Flat Major, Op. 102: I. Poco allegro più tosto moderato
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba5d243a08ae53109bd6c71e724cf4465a9a70e7a8e9d572b3fbb20e6da327f3. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLY331405795 — a six-check JSON result.
Violin Sonata No. 2 in E-Flat Major, Op. 102: II. Scherzo. Vivace
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfed2979843e3dffcfefd76df61accb01a504678faae7b6eb062edfa9970fe8ef. Chain 2 (Bitcoin): anchored in block 960223 (2026-07-30T07:51:46Z), 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/NLY331405796 — a six-check JSON result.
Violin Sonata No. 2 in E-Flat Major, Op. 102: III. Andante
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1896051e67694beb7464cdc4a58805ac7f9adf7dc7f266cb267fe9ebbfdfe6d5. Chain 2 (Bitcoin): anchored in block 960175 (2026-07-30T00:16:15Z), 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/NLY331405797 — a six-check JSON result.
Violin Sonata No. 2 in E-Flat Major, Op. 102: IV. Allegro grazioso, non presto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec7d8f326c4427c863dd331bb22d97a049a5e0ecd98b163b98e7e3a5c0b6a452. 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/NLY331405798 — a six-check JSON result.
Violin Sonata No. 10 in G, Op. 96: II. Adagio Espressivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6d7f0a178068ab567c723018c16ae10a5c8ef1c4143f71daadb3e3e3a62fd13. 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/NLY331211962 — a six-check JSON result.
Violin Sonata No. 10 in G, Op. 96: III. Scherzo: Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90ffd603ec6c1952c0dfb1bdbb6b53c64e7f372cac016c957ec5a75afbe28c42. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/NLY331211963 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a06a05c68dfeb06a7de064b526e1a4a5f3d4834c12770cb00278a255bbd3ec0. 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/NLY331904103 — a six-check JSON result.
Violin Sonata, L.140: II. Intermède, fantasque et léger
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2a5ab8cd084442721c5eee5c2b98ef64482f52a552bd24a78df9088c0c39832. Chain 2 (Bitcoin): anchored in block 960164 (2026-07-29T23:23:05Z), 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/NLY331904104 — a six-check JSON result.
Violin Sonata, L.140: III. Finale, très animé
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14182a7a58dfe907d55df08f76852ef3fff802a0278c9cbb2ad83671e0bc2b64. Chain 2 (Bitcoin): anchored in block 960209 (2026-07-30T05:15:54Z), 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/NLY331904105 — a six-check JSON result.
Violin Sonata No. 2 in G Major, M.77: I. Allegretto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7390d8033ed7d0866c42cbdeb27fbbacb78d704de041275082aeba212a5536ef. Chain 2 (Bitcoin): anchored in block 960209 (2026-07-30T05:15:54Z), 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/NLY331904106 — a six-check JSON result.
Violin Sonata No. 2 in G Major, M.77: II. Blues. Moderato
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa453b66710fe5cb93e480d888420de1c7c25d2e29ac5ca715808676eec1c4d87. Chain 2 (Bitcoin): anchored in block 960209 (2026-07-30T05:15:54Z), 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/NLY331904107 — a six-check JSON result.
Violin Sonata No. 2 in G Major, M.77: III. Perpetuum mobile, allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a098d9afc80dab039aa1bf3c396e7889b7ed3c641c52bea0e3419523a3e96d8. 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/NLY331904108 — a six-check JSON result.
Violin Sonata in A Major, FWV 8: I. Allegretto ben moderato
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70a5cca457ff11433ba033a88931d20fd67ff7458d5814cb8ec7485e9135d9a5. Chain 2 (Bitcoin): anchored in block 960209 (2026-07-30T05:15:54Z), 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/NLY331904109 — a six-check JSON result.
Violin Sonata in A Major, FWV 8: III. Recitativo-Fantasia, ben moderato
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x258fe07b12fb29dec14c3be4a4e871f8cce133d94f8c5952b03e6ad325e2c398. Chain 2 (Bitcoin): anchored in block 960181 (2026-07-30T00:53:20Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLY331904111 — a six-check JSON result.
Violin Sonata in A Major, FWV 8: IV. Allegretto poco mosso
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc067946b0e8ae9fa0d6a4ca8f88149f821fbbb3731aee59b70f5b63c0615ae8. Chain 2 (Bitcoin): anchored in block 960230 (2026-07-30T08:32:18Z), 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/NLY331904112 — a six-check JSON result.
Sonata No. 3 in D Minor, Op. 108: II. Adagio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6494659eb62115436b4199487f4d95fc116b45647d0652d5940f0852643c3210. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/NLY331405621 — a six-check JSON result.
Sonata No. 3 in D Minor, Op. 108: III. Un poco presto e con Sentimento
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x225109c61457d91e68a113794816e2bf325748d6269ff652d323abba4e2f5a26. Chain 2 (Bitcoin): anchored in block 960296 (2026-07-30T19:11:09Z), 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/NLY331405622 — a six-check JSON result.
Sonata No. 3 in D Minor, Op. 108: IV. Presto Agitato
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76e57e1f73e7b706f75a594e250eb332fafc6adc7956e8eb8a98e0ee3d557c38. 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/NLY331405623 — a six-check JSON result.
Violin Sonata, FP 119: I. Allegro con fuoco
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22a124ba00b28200f368d4333d50ec56c4ec9edbb1a296b251f5ae16118e552e. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), 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/NLY331703534 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f92b300cb02593963c1405e44a0518608e9d063cc21f32c0d5de2ff683ff9df. Chain 2 (Bitcoin): anchored in block 960209 (2026-07-30T05:15:54Z), 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/NLY331703535 — a six-check JSON result.
Violin Sonata, FP 119: III. Presto tragico
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x057c42e6f7f83b0b82a20a8e48db20a6f0efa31d925bec6e00c53b0c97871e2a. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/NLY331703536 — a six-check JSON result.
Rachmaninov: Rhapsody on a Theme of Paganini, Op. 43: Variation XVIII. Andante cantabile
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Liszt: 6 Grandes études de Paganini, S. 141: No. 4 Vivo
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Yevgeny Svetlanov: Piano Concerto in C Minor; Alexander Skryabin: Symphony No. 3
Concerto For Piano & Orchestra in C minor: Allegro
Saint Petersburg Academic Symphony Orchestra
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45186535e35ed6e2f9512651b2e5593d20eb20110c850c19569e2d1cb7b0af53. Chain 2 (Bitcoin): anchored in block 960298 (2026-07-30T19:26:00Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAYC9400135 — a six-check JSON result.
Prokofiev: 6 Pieces from Cinderella, Op. 102: No. 1, Waltz. Cinderella and the Prince
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7e9a5d50786ae2f54c1cb3487792a6fc189d042288c8fce272e5a933e75122c. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/GBAYC0900321 — a six-check JSON result.
Prokofiev: 6 Pieces from Cinderella, Op. 102: No. 2, Cinderella's Variation
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Prokofiev: 6 Pieces from Cinderella, Op. 102: No. 4, Waltz. Cinderella Goes to the Ball
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Prokofiev: Piano Sonata No. 1 in F Minor, Op. 1
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Prokofiev: Piano Sonata No. 2 in D Minor, Op. 14: I. Allegro ma non troppo
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Prokofiev: Piano Sonata No. 2 in D Minor, Op. 14: III. Andante
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Prokofiev: Piano Sonata No. 2 in D Minor, Op. 14: IV. Vivace
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Rachmaninov: 8 Études-Tableaux, Op. 33: No. 1 in F Minor
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Rachmaninov: 8 Études-Tableaux, Op. 33: No. 3 in C Minor
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Rachmaninov: 8 Études-Tableaux, Op. 33: No. 4 in D Minor
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Rachmaninov: 8 Études-Tableaux, Op. 33: No. 5 in E-Flat Minor
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Rachmaninov: 8 Études-Tableaux, Op. 33: No. 6 in E-Flat Major
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Rachmaninov: 8 Études-Tableaux, Op. 33: No. 7 in G minor
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Rachmaninov: 8 Études-Tableaux, Op. 33: No. 8 in C-Sharp Minor
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Rachmaninov: Études-Tableaux, Op. 39: No. 1 in C Minor
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Rachmaninov: Études-Tableaux, Op. 39: No. 2 in A Minor
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Rachmaninov: Études-Tableaux, Op. 39: No. 3 in F-Sharp Minor
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Rachmaninov: Études-Tableaux, Op. 39: No. 4 in B Minor
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Rachmaninov: Études-Tableaux, Op. 39: No. 5 in E-Flat Minor
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Rachmaninov: Études-Tableaux, Op. 39: No. 6 in A Minor
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Rachmaninov: Études-Tableaux, Op. 39: No. 7 in C Minor
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Rachmaninov: Études-Tableaux, Op. 39: No. 8 in D Minor
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Liszt: 12 Études d'exécution transcendante
Études d'exécution transcendante S.139: II. Fusées
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Études d'exécution transcendante S.139: IV. Mazeppa
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Études d'exécution transcendante S.139: VIII. Wilde Jagd
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Études d'exécution transcendante S.139: XI. Harmonies du soir
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Prokofiev: 4 Études, Op. 2: No. 1 in D Minor
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Prokofiev: 4 Études, Op. 2: No. 2 in E Minor
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Prokofiev: 4 Études, Op. 2: No. 3 in C Minor
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Prokofiev: 4 Études, Op. 2: No. 4 in C Minor
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Piano Concerto in A Minor, Op. 16: I. Allegro Moderato
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Piano Concerto in A Minor, Op. 16: II. Adagio
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Peer Gynt Suite No. 1, Op. 46: IV. In the Hall of the Mountain King
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10 Preludes, Op. 23: No. 1, Largo in F-Sharp Minor
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10 Preludes, Op. 23: No. 1 in F-Sharp Minor
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10 Preludes, Op. 23: No. 7, Allegro in C Minor
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Piano Concerto No. 4 in G Minor, Op. 40: II. Largo
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Rachmaninov: 12 Romances, Op. 21: No. 5, Lilacs (Version for Piano)
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Rachmaninov: 6 Moments Musicaux, Op. 16: No. 4 in E Minor
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5 Morceaux de fantaisie, Op. 3: I. Elégie in E-Flat Minor
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Au bord d'une source (from Années de pèlerinage, 1, la Suisse)
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Consolation No. 3 in D-Flat Major, S. 172
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Concerto Grosso in G Minor, Op. 6 No. 8 "Fatto per la notte di Natale": V. Allegro
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12 Études, Op. 25: No. 1, Étude in A-Flat Major "Harp Study"
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Symphony No. 5 in C Minor, Op. 67: I. Allegro con brio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d63892ae07197b51d2da65046738cee83bba15e0e4f20492faac3c7cde85115. 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/GBAYD8100171 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8baeef0b4e5222a7ac82dc653014f6225d349182b568edda7605cb32d1947e8d. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/FIFIN9201000 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x381f3d51f49336c921a70c736d2025101e8b1b85ee72db9c3647fb80adfd464d. 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/GBAYC9002473 — a six-check JSON result.
Hungarian Rhapsody No. 2 in D Minor, S. 359
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe97bdeae33c48423cedeab6f921f4beded20313fa5d56627ed680f5dacb86d81. 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/GBAYC8600048 — a six-check JSON result.