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 0x8fd9c6ede055380d4d6bc56799d7f545c31c9c4904f7f644e4f1de617f99f6dc. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c419f95b-5e5f-472c-8d74-741d1b0ea810.json and https://artists.proofprofile.net/proofs/artist/c419f95b-5e5f-472c-8d74-741d1b0ea810.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
Rhapsody on a Theme of Paganini, Op. 43: Variation No. 18. Andante cantabile (Transcr. for Piano Solo by Michael R. Loveridge)
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 0x6b1ec4a5f69c2a920cff0f9482e8a2f5e4cdf47102d30eb28a24ff4195679709. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/UK6822200778 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8be429a41b995e925f4fc125b79f9a422c3ec027c1ea5152a03f31f17855b505. 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/EEUV32200004 — a six-check JSON result.
Piano Sonata No. 14 in C-Sharp Minor, Op. 27 No. 2 "Moonlight": I. Adagio sostenuto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7250c9d27d1049c525684921e81163bf710e421fd4e0ba6e2b2d9a411895a939. Chain 2 (Bitcoin): anchored in block 960340 (2026-07-31T03:15:04Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLHK12000009 — a six-check JSON result.
Piano Sonata No. 14 in C-Sharp Minor, Op. 27 No. 2 "Moonlight": II. Allegretto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb14bc45d0bfae05ecfeb54982378351246d212accf3fb8ed0af7aafe50661c09. 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/NLHK12000010 — a six-check JSON result.
Piano Sonata No. 14 in C-Sharp Minor, Op. 27 No. 2 "Moonlight": III. Presto agitato
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70d7a6d3fa0279538323999009484c8fe6963ebed13a4fe30f336b5f32e0f908. 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/NLHK12000011 — a six-check JSON result.
The Carnival of the Animals, R. 125: XIII. The Swan (Arr. for Violin and Piano)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61d04fab3b360fa18718327970621f40989cd42bf6e4cab26c9ed8490258072a. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/UK6822200773 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc775b390bc19d2c9915b16bc0e97012880d07f5bca11c5f86af9a2d16f2e97f. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/RUB362100017 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x239ed93959487e43031a43621d3479aaac8a51ea682b3e8a0ff0814f8bd27a7c. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBCFU0600367 — a six-check JSON result.
14 Romances, Op. 34: No. 14, Vocalise (Arr. for Cello and Piano)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc377a64f3d9afb2e641d88315e23dff8eedc32ab51f3353102902148748041b9. 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/EEUV32300011 — a six-check JSON result.
The Nutcracker Suite, Op. 71a: VII. Andante maestoso (Pas de Deux) [Arr. For Piano]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dc0a75224eb33b97e4f3ff3deabfeccf6ae103f1bea125962533c018dff63d9. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/RUB702000007 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x590ec12338249d371217cbcf2081f49c3c282d8a770b5a4c89ad562015b31aa5. 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/NLHK11500019 — a six-check JSON result.
Marguerite au Rouet (Marguerite at the Spinning Wheel), Op. 19
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf62dbba1852bf81894cfdfd4907a837a45863b4711c82159e6703b8fa784506b. Chain 2 (Bitcoin): anchored in block 960210 (2026-07-30T05:21:45Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBCFU0600371 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25fd3cfaf6ec3b783ae3922bf63102170af7b229f4617415af1b6b24794b26d0. 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/NO8RQ2201010 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x968f1202e07b8dab6a59dd7cf016471ae80292bc6d8f55ca83cfd0694c23b87f. 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/UK6822200777 — a six-check JSON result.
I Will Wait for You (Arr. for Piano by Christina Grigoryants)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc815f0d1465fd3e98e668548e2176bda2046b688036738d1c05d4925d187b5b. 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/EEUV32200071 — a six-check JSON result.
Canon and Gigue in D Major, T. 377: I. Canon
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7121a8c9c22adac31545a675eb4cdc72327154554caa77e819fc5be53a4ee6d3. 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/EEVR32300005 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70d7a6d3fa0279538323999009484c8fe6963ebed13a4fe30f336b5f32e0f908. Chain 2 (Bitcoin): anchored in block 960330 (2026-07-31T00:58:21Z), 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/NLHK12000011 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9993a13680594a70a42df6fc56da8fe722dee3eedf26a9cc3e6bccf4587f6be1. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/NLHK11100005 — a six-check JSON result.
12 Etudes, Op. 10: No. 11 in E-Flat Major
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ff29997d16e7b0019a752022466aa6ed442d3fd14633c671e88019f8635b30c. Chain 2 (Bitcoin): anchored in block 960429 (2026-07-31T16:07:24Z), 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/NLHK11100015 — a six-check JSON result.
12 Etudes, Op. 10: No. 12 in C Minor "Revolutionary"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bd2c1788f631f1371ed2bd3a01198579596b667592ec3e1ab52fd51e2ef261b. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLHK11100016 — a six-check JSON result.
Piano Sonata No. 11 in A Major, K. 331/300i: III. Alla Turca "Turkish March"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1a3be005ede97175979379603fc991617f4c8a73850dc9a40a4df991d55aaa0. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/UK6822200744 — a six-check JSON result.
The Well-Tempered Clavier: Book 1, BWV 846-869: I. Prelude in C Major, BWV 846
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9066095fe45e89aaba1eeebcd163c01575c74cd60f8eeb66658313f8a848fb6e. 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/UK6822200775 — a six-check JSON result.
The Four Seasons, Op. 8, Concerto No. 2 in G Minor, RV 315 "Summer": III. Presto (Arr. for 2 Violins and Piano)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32cac9fcd902a243590e78c0bf40833adce86e3db183c223c290a47ba2b3080b. 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/LVC411100003 — a six-check JSON result.
Orchestral Suite No. 2 in B Minor, BWV 1067: VII. Badinerie (Arr. for Flute and Harpsichord)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fc53c6e27889c6309e981556fd10d8ea209ea9840b614f9116020e3039dce79. 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/EEVR32300003 — a six-check JSON result.
The Nutcracker, Op. 71, TH 14: No. 13, Waltz of the Flowers (Arr. for Piano by Vyacheslav Gryaznov)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6076b8eb772d336c94a9f0d172528bf0ad6254e56b21a3cc03c54e8b30567681. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/EEUV32300084 — a six-check JSON result.
The Nutcracker Suite, Op. 71a (Arr. for Piano): I. Tempo di marcia viva
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb21276321067428bce45dfc8b105b34c90a7ebd1d661a87f7ccc77543f6f518. 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/RUB701800001 — a six-check JSON result.
The Nutcracker Suite, Op. 71a (Arr. for Piano): III. Tarantella
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x410f7aca4d5ca98cb47547ce5561a0b0968158298ed3987564f75e37f052ff89. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/RUB701800003 — a six-check JSON result.
The Nutcracker Suite, Op. 71a (Arr. for Piano): IV. Intermezzo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c4872727c7875873d85aaf88872ff97d206ff83d1f71f586f27b3b7e591d551. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/RUB701800004 — a six-check JSON result.
5 Morceaux de fantaisie, Op. 3: No. 1, Elégie
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c10424e85ffc86d8270bb9c157a9768d0ebd62acaf7ed9f380e0152a54a2141. 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/RUB972200001 — a six-check JSON result.
Nocturnes, Op. 27: No. 2 in D-Flat Major
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa88b6cfb9ee7e9e19d77f63125fe0e36ebea9361cdf516d56dfbaf0fdca17e69. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/NLHK11500020 — a six-check JSON result.
Cello Suite No.1 in G major, BWV 1007: I. Prélude
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc38585e9fc5b9b93bbbd8acd25251689b9cdca0bb12c669ccde0817ad4432a8b. 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/LVL152005480 — a six-check JSON result.
The Well-Tempered Clavier: Book I, BWV 846-869: Prelude and Fugue in C major, BWV 846: I. Praeludium
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39426e61cc63b1d989034f1f45b512c4ce18b4568bcea411bfcf5fb7b12c8ba0. 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/RUB362100019 — a six-check JSON result.
Orchestral Suite No. 3 in D Major, BWV 1068: II. Air "Air on the G String" (Arr. for Viola, Strings and Harpsichord by Sergey Bryukhno)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57f5348f5c97a906ebea53bf30a9003db13bb6ba5ebba0ebf48c1cb64604fd53. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/RUB362100005 — a six-check JSON result.
6 Violin Sonatas and Partitas, BWV 1001-1006: Sonata No. 2 in A minor, BWV 1003: III. Andante (Transcr. for Piano by Alexander Siloti)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc2e02f641731f6fa4de0b5a4c97c5f20b85c184a5c089609098682f1781286d. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/EEUV32200029 — a six-check JSON result.
Ich ruf zu dir Herr Jesu Christ, BWV 639
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41a7421c67bb0056c1c90c4e601050de81320fd6fa8cad1490fc450fdacef600. 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/RUB361900005 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57f5348f5c97a906ebea53bf30a9003db13bb6ba5ebba0ebf48c1cb64604fd53. 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/RUB362100005 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa018c9f0ec84d8fdfc1bd742e6355cdb1ddb883630b4b851496b598016f3beb5. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/EEUV32300080 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61d04fab3b360fa18718327970621f40989cd42bf6e4cab26c9ed8490258072a. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/UK6822200773 — a six-check JSON result.
Piano Sonata No. 14 in C-Sharp Minor, Op. 27 No. 2 "Moonlight Sonata": I. Adagio sostenuto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79613656b4fdf8465f7a50d16fa13c986d70a4b49dfe2a5b79087718c77163f8. 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/UK6822200776 — a six-check JSON result.
The Four Seasons, Op. 8, Concerto No. 4 in F Minor, RV 297 "Winter": I. Allegro non molto (Arr. for 2 Violins and Piano)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x824243928c95cf96240abe1b90061b19976a2fddd554367c34f408a73f1438b5. 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/LVC411100007 — a six-check JSON result.
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Thaïs: Meditation (Arr. for Violin and Piano)
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Préludes, Livre 1, L. 117: No. 4, Les sons et les parfums tournent dans l'air du soir
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Ave Maria (After J. S. Bach) [Arr. for Violin and Piano]
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Chaconne in D Minor (After Violin Partita No. 2 in D Minor, BWV 1004 by J.S. Bach, Transcr. for Piano by Ferruccio Busoni)
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Orphée et Eurydice, Wq. 41: Mélodie (Transcr. for Violin and Piano by Fritz Kreisler)
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14 Romances, Op. 34: No. 14, Vocalise (Transcr. for Piano by Vyacheslav Gryaznov)
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Adagio in G Minor for Strings and Organ "Albinoni's Adagio" (Arr. for Violin and Piano)
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Melody in A Minor (From "The High Pass")
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5 Lieder, Op. 49: No. 4, Wiegenlied. Zart bewegt (Arr. for Violin and Piano by Arthur Walter Kramer)
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Romance in E-Flat Major for Piano and Viola
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Beau soir, L. 6 (Arr. for Cello and Piano by Aleksandr Grechaninov)
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Siciliano (Second movement from Flute Sonata in E-Flat Major, BWV 1031)
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Arpeggione Sonata in A minor, D. 821: I. Allegro moderato
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3 Old Viennese Dances, IFK 22: No. 2, Liebesleid
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Cello Sonata in G Minor, Op. 19: III. Andante
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Variations on a Rococo Theme for Cello and Orchestra, Op. 33
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String Quartet No. 3 in C Major, Op.76, Hob. III:77 "Emperor": I. Allegro
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Five Preludes and Fugue: IV. Prelude in E Minor
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Harpsichord Concerto No. 5 in F Minor, BWV 1056: II. Largo
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Bagatelle No. 25 in A Minor, WoO 59 "Für Elise"
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Admirers (From "A Slave of Love”) [Arr. for Piano by Igor Drukh]
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Minuet in G Major (From Notebook for Anna Magdalena Bach, BWV Anh. 114)
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The Man I Love (Arr. for Piano by Christina Grigoryants)
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Moon River (Arr. for Piano by Christina Grigoryants)
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Pavane, Op. 50 (Arr. for Piano by Chris Sennett)
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Siciliana Siciliana (After Flute Sonata in E-flat major, BWV 1031 by J. S. Bach)
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What Are You Doing the Rest of Your Life (Arr. for Piano by Christina Grigoryants)
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Orchestral Suite No. 3 in D Major, BWV 1068: II. Air (Transcr. for Piano by Alexander Siloti)
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12 Etudes, Op. 10: No. 10 in A-Flat Major
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The Nutcracker Suite, Op. 71a: I. March (Arr. for Piano)
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Deux Arabesques (Two Arabesques), L. 66: No. 2 in G Major
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Deux Arabesques, L. 66: No. 1 in E Major
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Peer Gynt Suite No. 1, Op. 46: I. Morning Mood (Arr. for 2 Pianos)
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Piano Sonata No. 16 in C Major, K. 545 "Sonata semplice": I. Allegro
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3 Intermezzi, Op. 117: No. 1 in E-Flat Major
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Piano Sonata No. 30 in E Major, Op. 109: I. Vivace, ma non troppo. Sempre legato
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Sonata No. 10 in C Major, K. 330: I. Allegro moderato
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Sonata No. 10 in C Major, K. 330: II. Andante cantabile
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Sonata No. 10 in C Major, K. 330: III. Allegretto
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The Seasons, Op. 37b: No. 4, April, "Snowdrop"
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The Seasons, Op. 37b: No. 12, December, "Christmas"
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Siciliana (After Flute Sonata in E-flat major, BWV 1031 by J. S. Bach)
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Piano Sonata No. 15 in D Major, Op. 28 "Pastoral": I. Allegro
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Piano Sonata No. 3 in C Major, Op. 2 No. 3: I. Allegro con brio
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Menuet in G Major (From Notebook for Anna Magdalena Bach, Klavierbüchlein von 1725, BWV Anh. 114) [Transcr. by Katya Kramer-Lapin]
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Piano Sonata No. 20 in G Major, Op. 49 No. 2: I. Allegro ma non troppo
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Piano Sonata No. 9 in E Major, Op. 14 No. 1: I. Allegro
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Piano Sonata No. 10 in G Major, Op. 14 No. 2: I. Allegro
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8 Etudes, Op. 42: No. 4 in F-Sharp Major
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Herz und Mund und Tat und Leben, BWV 147: X. Chorale. Jesu, Joy of Man's Desiring (Arr. for Piano by Myra Hess)
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Symphony No. 2, Op. 27 (Arr. for Piano by Georgy Kirkor): III. Adagio [Excerpt]
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How Insensitive (Arr. for Piano by Christina Grigoryants)
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12 Romances, Op. 21: No. 7, How Fair this Spot (Transcr. for Piano by Vyacheslav Gryaznov)
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Lullaby of Birdland (Arr. for Piano by Christina Grigoryants)
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Rachmaninoff, Tchaikovsky, Glinka: Famous Classical Music
The Nutcracker Suite, Op. 71a (Arr. for Piano): II. Dance of the Sugar Plum Fairy: Andante ma non troppo
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The Nutcracker Suite, Op. 71a (Arr. for Piano): V. Trepak (Russian dance): Molto vivace
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The Nutcracker Suite, Op. 71a (Arr. for Piano): VII. Andante maestoso
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Bourrée I (From Cello Suite No. 3 in C Major, BWV 1009)
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Menuet in G Major (From Notebook for Anna Magdalena Bach, BWV Anh. 114)
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Carol of the Bells (Transcr. for Orchestra by Sergey Bryukhno)
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Minuet II (From Violin Partita No. 3 in E Major, BWV 1006)
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Études for Solo Piano, Book 2: Étude No. 15
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Petite Suite, L. 65: No. 1, En bateau (Transcr. for Violin and Piano by Gaston Choisnel)
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa018c9f0ec84d8fdfc1bd742e6355cdb1ddb883630b4b851496b598016f3beb5. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/EEUV32300080 — a six-check JSON result.
Kinderszenen, Op. 15: No. 1, Von fremden Ländern und Menschen
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae92d301303b36ca0c182ad3de2b815104db3a4b68f7cfe80c2337b6b523719a. Chain 2 (Bitcoin): anchored in block 960362 (2026-07-31T06:58:00Z), 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/EEUV32300107 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dc0a75224eb33b97e4f3ff3deabfeccf6ae103f1bea125962533c018dff63d9. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/RUB702000007 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bd2c1788f631f1371ed2bd3a01198579596b667592ec3e1ab52fd51e2ef261b. Chain 2 (Bitcoin): anchored in block 960429 (2026-07-31T16:07:24Z), 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/NLHK11100016 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x158d223ebc3d00d17feb0106a5deda1ed311fc22e84c8539f8e3eeedf8031704. 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/EEUV32300079 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x434bf21126ea06d92a28a9d49b3a8c1923ec2bd5f376bbd045457a74c5f77fa7. 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/NLHK11500018 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61d04fab3b360fa18718327970621f40989cd42bf6e4cab26c9ed8490258072a. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/UK6822200773 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6f6ea416cb6b3dc6a3bd7dc004c5b8d35aec31a953692c5cc3e5f915bb648b2. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/RUB702000001 — a six-check JSON result.
The Nutcracker Suite, Op. 71a: II. Dance of the Sugar Plum Fairy (Arr. for Piano)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d1e4f62b9acb3e7f40e64066ff2bf93aa4bd20ca3a2b35209cd6d54ca4575e8. 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/RUB702000002 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97d268f86e0e0f2823c89fb4e5f4da1f8a8bef41fd97f4216517675b5799b3a8. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLHK10900041 — a six-check JSON result.
Harpsichord Concerto No. 5 in F Minor, BWV 1056: II. Largo (Arioso) [Arr. for Piano Solo by Alfred Cortot]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f235f70b2761f5dc0cf7aa695ba363ffea1a54af88a838f2ab09cdfe488072e. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/EEUV32300108 — a six-check JSON result.
Italian Concerto in F Major, BWV 971: I. —
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x674f6ff5d9a857401b51271f61f88c2a7d2ca2fcaeea4301bf7f954747386bb6. Chain 2 (Bitcoin): anchored in block 960404 (2026-07-31T13:06:57Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/EEUV32300103 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79613656b4fdf8465f7a50d16fa13c986d70a4b49dfe2a5b79087718c77163f8. Chain 2 (Bitcoin): anchored in block 960167 (2026-07-29T23:42:34Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/UK6822200776 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc724afd73ca09c9c7e2ba1938d200810a85f7b6e5758bcb648c11929729ecdbe. 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/EEUV32200011 — a six-check JSON result.
Romance in E-Flat Major (Version for Piano)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09ab656c65087a68f4b51ab9914e634bd4d992077777c84de917a2a63f306d6f. 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/EEUV32200027 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9066095fe45e89aaba1eeebcd163c01575c74cd60f8eeb66658313f8a848fb6e. 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/UK6822200775 — a six-check JSON result.