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 0x79aa36280ba8b1464d9d1d6b092846caf925024e466f129b85ca41d7599a5d4f. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d67e45d9-bd48-4220-8f41-f0f2fdf6e949.json and https://artists.proofprofile.net/proofs/artist/d67e45d9-bd48-4220-8f41-f0f2fdf6e949.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
Herz und Mund und Tat und Leben, BWV 147: X. Chorale. Jesu, Joy of Man's Desiring (Arr. for Piano by Myra Hess)
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 0x158d223ebc3d00d17feb0106a5deda1ed311fc22e84c8539f8e3eeedf8031704. 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/EEUV32300079 — a six-check JSON result.
Tchaikovsky: Classical Piano Masterworks
Mozart, Brahms, Bach, Debussy, Satie, Bryukhno, Beethoven: Classical Lullabies
Peer Gynt Suite No. 1, Op. 46: I. Morning Mood (Arr. for 2 Pianos)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bea0e1318af6f7f151c6180036bd7226dc8e6a150e8b4d4b3e85c03e1f0e444. 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/EEUV32200023 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e2d11288c601120b57fde1a26ac9544a34771604177fdb5b06dc1ff65fd3482. 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/EEUV32200010 — 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)
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.
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 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/LVL152005480 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc724afd73ca09c9c7e2ba1938d200810a85f7b6e5758bcb648c11929729ecdbe. Chain 2 (Bitcoin): anchored in block 960193 (2026-07-30T02:05:19Z), 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/EEUV32200011 — 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.
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 957064 (2026-07-07T16:43:08Z), 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/LVC411100007 — 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 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/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 0x28dd2906613928d1acc0a2c45f3aa82dedca50fb8ce2b6c5c7969a647a5950b5. 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/RUB361900002 — 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 0xfc02cbcf3a793f56f056bbb42bea1597999dd86b047bf5580cf2600f59a6cad3. 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/NLHK11500016 — 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 0xe93607123e0523e4b7bd92737eb9921cc4521b98cf932fffcdda413f944a764e. 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/NLHK11500017 — 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 0x434bf21126ea06d92a28a9d49b3a8c1923ec2bd5f376bbd045457a74c5f77fa7. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/NLHK11500018 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc775b390bc19d2c9915b16bc0e97012880d07f5bca11c5f86af9a2d16f2e97f. 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/RUB362100017 — a six-check JSON result.
Piano Sonata No.11 in A major, K.331/300i: I. Andante grazioso
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d15a66ee467dc2a8814d600c7653530900b439ccbf725e35798b97ed155bd59. 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/EEUV32200025 — a six-check JSON result.
Piano Sonata No.11 in A major, K.331/300i: III. Alla Turca
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88c636a9aee86de3c994006a88a1329799e49ecd045fcbaa059bda10b9c1ace0. 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/EEUV32200024 — a six-check JSON result.
Bagatelle No. 25 in A Minor, WoO 59 "Für Elise"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bf049ea4ef88000166916f8734f0cb557edf575e6867d44afbdb0fb0d7d4aa2. 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/EEUV32200021 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x347d5bd899a38c7ed9efee991fa3205f66759bd2c0bcc1b0d5489e8540c959ab. 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/USCGH2163852 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68b3d0ca80bff37c85fb236ec66cf3825aa9d395c1fcb4c6dae65d8149aa8219. 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/EEVR32200001 — a six-check JSON result.
The Nutcracker Suite, Op. 71a: I. March (Arr. For Piano)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6f6ea416cb6b3dc6a3bd7dc004c5b8d35aec31a953692c5cc3e5f915bb648b2. 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/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.
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 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/RUB702000007 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb99068b83ce41bf4e1e6d1db57791cb0a62ea0e4fca7d63d4a8017ec8db13502. 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/GBCFU0400559 — a six-check JSON result.
Le carnaval des animaux, R. 125: XIII. The Swan
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf62175de9df78711de3b600abf6a79365707a819b179b9bd0e2032c529d795fc. 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/GBCFU0400549 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x183803720e0b57a7f78b6a9dc0938e208c2c4d518db1c46a1c55f11ea17a9a4a. 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/GBCFU0400565 — a six-check JSON result.
The Well-Tempered Clavier: Book 1, BWV 846-869: 1. Prelude in C Major, BWV 846
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39426e61cc63b1d989034f1f45b512c4ce18b4568bcea411bfcf5fb7b12c8ba0. 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/RUB362100019 — 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.
Nocturne in D Minor for Cello and Оrchestra, Op. 19, No. 4
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaee13124f3d167b0f017fb92d074a193d8feeb12139c2a995b137a83eb1800d9. 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/RUB091300003 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1a5e45ec85a2ae4162030f45bf4869a14bb8f9aa56a84afb5b9f2456b86c22e. 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/LVL152006153 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef35d9a6bc72bae64ba57429e9315f233ea46d80abfb65b5c27c59b5f2670e20. 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/RUB361900007 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7342189903e93d0c69db2ff85de9f4088ceff84c87c4440d6e3cb6a102e0649. 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/EEUV32200022 — a six-check JSON result.
The Seasons, Op. 37b: No. 10, October, "Autumn Song"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe25dfb2a80897a65e25c83ffc1d40793e5e4873a3a8920672006da944426fc86. Chain 2 (Bitcoin): anchored in block 960370 (2026-07-31T08:38:45Z), 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/NLHK11900010 — a six-check JSON result.
The Seasons, Op. 37b: No. 1, January, "By the Fireside"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf24c6f92be7272130048ee4353f7c366ff568bf5c7005982bbf4d6339efe426e. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/NLHK11900001 — 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 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/RUB361900005 — a six-check JSON result.
Beethoven: Piano Sonatas No. 9, 10, 15 & 20
Grandes études de Paganini, S.141: III. La Campanella
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78c1d3891d6543bd45346eb272fd7a0ec695b70189501a72a36a7cee2452de82. 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/NLHK10900038 — a six-check JSON result.
Beethoven: Piano Sonatas No. 1, 12, 14 & 26
Piano Sonata No. 8 in C Minor, Op. 13 "Pathétique": I. Grave - Allegro di molto e con brio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c89bd53c62ddb6ca7ec66893804a23e13d59478b0a557df73acf0c984be0af7. Chain 2 (Bitcoin): anchored in block 960198 (2026-07-30T02:21:55Z), 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/NLHK11900017 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf24c6f92be7272130048ee4353f7c366ff568bf5c7005982bbf4d6339efe426e. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/NLHK11900001 — a six-check JSON result.
The Seasons, Op. 37b: No. 4, April, "Snowdrop"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf13b0f991b5f100104132a3d6cefb561d7916c5cea1656f0b4bc53be25bd69d7. Chain 2 (Bitcoin): anchored in block 960185 (2026-07-30T01:32:48Z), 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/NLHK11900004 — a six-check JSON result.
The Seasons, Op. 37b: No. 12, December, "Christmas"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85330e5def6fb4a1dcb8f22c5ce26a8ebdff3dcfbc8c5e6814ce405e7000865f. 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/NLHK11900012 — a six-check JSON result.
Piano Sonata No. 2 in D Minor, Op. 31: III. Allegretto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08c54c6587aa0c9f47959c2aea352dfe68080d17e4c6a9fabb7ce6236260908a. 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/RUB011000006 — a six-check JSON result.
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Rondo a capriccio in G, Op. 129 "Die Wut über den verlornen Groschen"
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Piano Music by Russian Composers: Mussorgsky, Balakirev, Tchaikovsky, Scriabin, Rachmaninoff, Prokofiev
Études-tableaux, Op. 39: No. 6 in A Minor
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Variations on a Theme: Bach-Busoni, Beethoven, Schumann, Balakirev
Partita for Violin Solo No. 2 in D Minor, BWV 1004 - Chaconne in D Minor (Arr. for Piano by Ferruccio Busoni)
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Chopin: Études, Op. 10 & Piano Sonata No. 3 in B Minor, Op. 58
Clair de Lune: Piano Music by Beethoven, Chopin, Brahms, Debussy, Scriabin, Rachmaninoff
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Schubert: Sonatinas and Sonata for Violin and Piano
Sonatina for Violin and Piano in D Major, D. 484: I. Allegro molto
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Sonatina for Violin and Piano in D Major, D. 484: II. Andante
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Sonatina for Violin and Piano in D Major, D. 484: III. Allegro vivace
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Shostakovich: String Quartets No. 9 & 11 - Piano Quintet
Debussy: Suite Bergamasque, L. 75: Clair de Lune
Mozart, Beethoven, Chopin: The Best of Classical Piano
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The Well-Tempered Clavier: Book I, BWV 846-869: Prelude and Fugue in C major, BWV 846: I. Praeludium
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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)
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6 Violin Sonatas and Partitas, BWV 1001-1006: Sonata No. 2 in A minor, BWV 1003: III. Andante (Transcr. for Piano by Alexander Siloti)
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Easy Listening Classical Instrumental Music
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Carol of the Bells (Instrumental Version)
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Romance in E-Flat Major for Piano and Viola
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Piano Sonata No. 14 in C-Sharp Minor, Op. 27 No. 2 "Moonlight Sonata": I. Adagio sostenuto
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Piano Sonata No. 11 in A Major, K. 331/300i: III. Alla Turca "Turkish March"
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The Well-Tempered Clavier: Book 1, BWV 846-869: I. Prelude in C Major, BWV 846
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Le carnaval des animaux (The Carnival of the Animals), R. 125: XIII. Le Cygne (The Swan) (Arr. for Violin and Piano)
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Orphée et Eurydice, Wq. 41: Mélodie (Transcr. for Violin and Piano by Fritz Kreisler)
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Ave Maria (After J. S. Bach) [Arr. for Violin and Piano]
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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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Thaïs: Meditation (Arr. for Violin and Piano)
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Adagio in G Minor for Strings and Organ "Albinoni's Adagio" (Arr. for Violin and Piano)
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14 Romances, Op. 34: No. 14, Vocalise (Transcr. for Piano by Vyacheslav Gryaznov)
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12 Variations in C Major on "Ah, vous dirai-je Maman", K.265/300e: I. Theme "Twinkle, Twinkle, Little Star" (Transcr. for Harp by Sergey Bryukhno)
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Турецкий марш (Третья часть из Сонаты для фортепиано No. 11 ля минор, K.331/300i)
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Шутка (Из Оркестровой сюиты No.2 си минор, BWV 1067)
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Зима (Третья часть из концерта "Зима" цикла "Времена года")
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Шторм (Третья часть из концерта "Лето" цикла "Времена года")
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef35d9a6bc72bae64ba57429e9315f233ea46d80abfb65b5c27c59b5f2670e20. 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/RUB361900007 — a six-check JSON result.
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Прелюдия (Первая часть из Сюиты No. 1 соль мажор, BWV 1007)
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Адажио (Третья часть Симфонии No. 2, соч. 27 )
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc377a64f3d9afb2e641d88315e23dff8eedc32ab51f3353102902148748041b9. 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/EEUV32300011 — a six-check JSON result.
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Танец Феи Драже (Из сюиты "Щелкунчик", соч. 71a)
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bd2c1788f631f1371ed2bd3a01198579596b667592ec3e1ab52fd51e2ef261b. Chain 2 (Bitcoin): anchored in block 960314 (2026-07-30T21:00:46Z), 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/NLHK11100016 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e6c0e9128ae81de600bb918c3fb07125b6d8667f05a6adb6220b6d760cad3c1. 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/EEUV32200046 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8be429a41b995e925f4fc125b79f9a422c3ec027c1ea5152a03f31f17855b505. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/EEUV32200004 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1362dc1e89edcd788503b3096f03b516fc2de70f88166a7f38d06de51d84b56. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/EEVR32300011 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc724afd73ca09c9c7e2ba1938d200810a85f7b6e5758bcb648c11929729ecdbe. Chain 2 (Bitcoin): anchored in block 960105 (2026-07-29T12:35:17Z), 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.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c4097f0ae53f22b8df9a8d98cec1c4958bfc038977d2e1d68d9f5b4194e544e. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/EEUV32300116 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe12378cb389b53ce509d211dcd150a2845886aee2b20cd4742e9f515cb60d054. 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/EEUV32300117 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68b3d0ca80bff37c85fb236ec66cf3825aa9d395c1fcb4c6dae65d8149aa8219. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/EEVR32200001 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1a3be005ede97175979379603fc991617f4c8a73850dc9a40a4df991d55aaa0. Chain 2 (Bitcoin): anchored in block 960150 (2026-07-29T21:51:49Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/UK6822200744 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bea0e1318af6f7f151c6180036bd7226dc8e6a150e8b4d4b3e85c03e1f0e444. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/EEUV32200023 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79613656b4fdf8465f7a50d16fa13c986d70a4b49dfe2a5b79087718c77163f8. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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 0xc38585e9fc5b9b93bbbd8acd25251689b9cdca0bb12c669ccde0817ad4432a8b. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/LVL152005480 — a six-check JSON result.
12 Etudes, Op. 10: No. 12 in C Minor "Revolutionary"
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Piano Sonata No. 16 in C Major, K. 545 "Sonata semplice": I. Allegro
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1835506b7bae48cba7db59c7607f032a4acd25b624fa9bca102a1b817adcb95e. 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/EEUV32200031 — a six-check JSON result.
Canon and Gigue in D Major, T. 377: I. Canon
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The Nutcracker Suite, Op. 71a: II. Dance of the Sugar Plum Fairy (Arr. for Piano)
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfbae7d686acb6088ffa985dfcb812a0e98c9285b59c4554f69ca37896650ae2. 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/EEVR32300010 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75cb2cefde68850f607f997a823c6bc47725a273b4d526c4fe3b97ec6aaa7e84. 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/EEVR32300009 — a six-check JSON result.
The Carnival of the Animals, R. 125: XIII. The Swan (Arr. for Violin and Piano)
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32cac9fcd902a243590e78c0bf40833adce86e3db183c223c290a47ba2b3080b. 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/LVC411100003 — a six-check JSON result.
Symphony No. 2, Op. 27 (Arr. for Piano by Georgy Kirkor): III. Adagio [Excerpt]
Rhapsody on a Theme of Paganini, Op. 43: Variation No. 18. Andante cantabile (Transcr. for Piano Solo by Michael R. Loveridge)
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Variations on an Original Theme, Op. 36 "Enigma": Var. IX. Adagio "Nimrod" (Version for Piano)
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Nocturne No. 20 in C-Sharp Minor, Op. Posth.
Children's Album, Op. 39: No. 15, Italian Song
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14 Romances, Op. 34: No. 14, Vocalise (Arr. for Cello and Piano)
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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.
Préludes, Livre 2, L. 123: No. 5, Bruyères
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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.