Christoph Eschenbach (; born 20 February 1940) is a German pianist and conductor. Over the past decades, he has held positions as music directors at 13 orchestras worldwide. In 2014, he was awarded a
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 0xfa42453b0d66944eff9fa8ed02bd8da8e17c0a3e8b55e8014073f9c631248e0f. 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/96e87f91-87c5-4acb-b8a2-fa7e287f3210.json and https://artists.proofprofile.net/proofs/artist/96e87f91-87c5-4acb-b8a2-fa7e287f3210.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
Brahms: String Quartet, Quintet & Sextet
Brahms: Complete String Quartets, Quintets & Sextets
String Quartet No. 1 in C Minor, Op. 51, No. 1: I. Allegro
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 0x4e88c568d48c922a3a9fd1d95feef45b91a1ee0ff824dba49c342b704b5363c0. Chain 2 (Bitcoin): anchored in block 960113 (2026-07-29T13:38:16Z), 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/DEF055901461 — a six-check JSON result.
String Quartet No. 3 in B Flat Major, Op. 67: I. Vivace
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaf14f876a33e9f9bfb7d2752364ee2b4bca298ac97148a2fcf9654b83f1a127. 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/DEF056000221 — a six-check JSON result.
String Quintet No. 1 in F Major, Op. 88: I. Allegro non troppo, ma con brio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0190cbda5319a42a0da34a5fab3aefa0fed2e2068fb1f2de2b206d12f4c70a3b. Chain 2 (Bitcoin): anchored in block 960309 (2026-07-30T20:35:49Z), 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/DEF056802491 — a six-check JSON result.
Clarinet Trio in A Minor, Op. 114: I. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90b734ab5cf63f2c7d308a7949c99d456d9b63cb20142c638995dbd5d66d19a8. 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/DEF056802311 — a six-check JSON result.
String Sextet No. 1 in B Flat Major, Op. 18: I. Allegro ma non troppo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf031f8219f2be8adce0b3a32689dc970d864ada8c58e152691e4f933b5da13a9. 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/DEF056601352 — a six-check JSON result.
String Quartet No. 1 in C Minor, Op. 51, No. 1: II. Romanze (Poco adagio)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x804ccaa02d42881d7d4f60ee11dacfd249c622aa7f0a6f5dab8e036647d7686d. 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/DEF055901462 — a six-check JSON result.
String Quartet No. 3 in B Flat Major, Op. 67: II. Andante
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacf112d20b2de61c437dc3914ef03474f2f328f9395e912b0225199e52ba7f2c. 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/DEF056000222 — a six-check JSON result.
String Quintet No. 1 in F Major, Op. 88: II. Grave ed appassionato - Allegretto vivace - Tempo I - Presto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb866e2c3553335551146e39cc93c0de2b2eb46ec1a048a16b29d3188be4b9b7f. 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/DEF056802492 — a six-check JSON result.
Clarinet Trio in A Minor, Op. 114: II. Adagio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9ddd74e448fdfc0504a5a9e8c28fb0bbdefbd11748d59b5b73865bbe99d6d32. 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/DEF056802312 — a six-check JSON result.
String Sextet No. 1 in B-Flat Major, Op. 18: II. Andante ma moderato
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf14c9434b3234e546fa847e7a7bbb329876da8b6b6ca7e6642a5f387c3407170. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/DEF056601351 — a six-check JSON result.
String Quartet No. 1 in C Minor, Op. 51, No. 1: III. Allegretto molto moderato e comodo - Un poco più animato
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb88212cf0ac3fe9b90a39fba43bc85dad7982250ae87b2aedd3df88dd9fd557. 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/DEF055901463 — a six-check JSON result.
String Quartet No. 3 in B Flat Major, Op. 67: III. Agitato (Allegretto non troppo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6368532a1831ea9990b346f119cde84187cc9086cec4adde6734e1c872f740fd. 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/DEF056000223 — a six-check JSON result.
String Quintet No. 1 in F Major, Op. 88: III. Allegro energico
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef77bc2ab2d46d1420d64828023033f0ce96f0e6e23249baaab90b628a450ee4. 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/DEF056802493 — a six-check JSON result.
Clarinet Trio in A Minor, Op. 114: III. Andante grazioso
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9832a7ea33f589867d522b30fdd4aeda85ab5a134a30853da0d427b90c4a5f8. Chain 2 (Bitcoin): anchored in block 960309 (2026-07-30T20:35:49Z), 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/DEF056802313 — a six-check JSON result.
String Sextet No. 1 in B Flat Major, Op. 18: III. Scherzo (Allegro molto)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a86733b302c8d40c7e62e4437f93155eeea215825a78a37a69f911329a2f444. 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/DEF056601353 — a six-check JSON result.
String Quartet No. 1 in C Minor, Op. 51, No. 1: IV. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7b3416a629291b1972e67ce88e439a730e6368f9e41513edb12c0221a8f3196. 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/DEF055901464 — a six-check JSON result.
String Quartet No. 3 in B Flat Major, Op. 67: IV. Poco allegretto con variazioni - Doppio movimento
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7f334a4d2abf17ab1558f3db1e99efa29a65247e374d7dc89d3cf65fd146b61. Chain 2 (Bitcoin): anchored in block 960339 (2026-07-31T03:13:37Z), 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/DEF056000224 — a six-check JSON result.
String Quintet No. 2 in G Major, Op. 111: I. Allegro non troppo, ma con brio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51093afbd0ea13fee1864d84fd4b0cec254f2893ce5d0fe887711483adb07417. Chain 2 (Bitcoin): anchored in block 960225 (2026-07-30T08:04:30Z), 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/DEF056702011 — a six-check JSON result.
Clarinet Trio in A Minor, Op. 114: IV. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3697bbafff5fb8f0156300ae994ce36ad0f803be0635263b02b1879eb849fc1f. 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/DEF056802314 — a six-check JSON result.
String Sextet No. 1 in B Flat Major, Op. 18: IV. Rondo (Poco allegretto e grazioso)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e5861c1fb9acf56fb63c75e66960d7393f8ffc4a59d608e744ac430134cc843. 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/DEF056601354 — a six-check JSON result.
String Quartet No. 2 in A Minor, Op. 51, No. 2: I. Allegro non troppo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c9445c72ab7815f38a19cba4b6c21dfab2272ec41bf6679f49b75455c277398. 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/DEF055901471 — a six-check JSON result.
Piano Quintet in F Minor, Op. 34: I. Allegro non troppo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cc3af934711f1d0ceab22111b0dcfb5470d118d0ace61ad6ee748069ab1c07a. Chain 2 (Bitcoin): anchored in block 960277 (2026-07-30T16:10:47Z), 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/DEF056802501 — a six-check JSON result.
String Quintet No. 2 in G Major, Op. 111: II. Adagio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0bf526c665e7576c151a24282d61801ce9ff5fb421b0bbb649938d0477252d9. 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/DEF056702012 — a six-check JSON result.
Clarinet Quintet in B Minor, Op. 115: I. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafdc20ba61c176d8b0830b9432efc4b41ef0eeb7ab4fd719cc9875880bd2c5f8. Chain 2 (Bitcoin): anchored in block 960247 (2026-07-30T10:42:33Z), 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/DEF056701381 — a six-check JSON result.
String Sextet No. 2 in G Major, Op. 36: I. Allegro non troppo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c7b85c1a379348a4c01c59cdb07c80c6d1e8b39a677b0b98874d46b349dff9b. 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/DEF056802511 — a six-check JSON result.
String Quartet No. 2 in A Minor, Op. 51, No. 2: II. Andante moderato
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa850d971145f668778cfc1aa230f1588c8e6c90073ee28340277f0e698ca259b. 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/DEF055901472 — a six-check JSON result.
Piano Quintet in F Minor, Op. 34: II. Andante, un poco adagio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4386ee5320a9eb8f9a99fffca530082d39ba0021a46c482a21fc75c96dad864. Chain 2 (Bitcoin): anchored in block 960294 (2026-07-30T18:46:00Z), 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/DEF056802502 — a six-check JSON result.
String Quintet No. 2 in G Major, Op. 111: III. Un poco allegretto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c1040683a7c6aeefe6eec86ba42057fb5fbe3f73c792d238cad2adff75f74b5. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/DEF056702013 — a six-check JSON result.
Clarinet Quintet in B Minor, Op. 115: II. Adagio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa7d708781f2171f43fa01821f054e0251de46aeb12069f2eec2ce8dd90fc46a. 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/DEF056701382 — a six-check JSON result.
String Sextet No. 2 in G Major, Op. 36: II. Scherzo (Allegro non troppo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e9cddb52b5407b43b9ec5829933ad51d543199f6cff14cb4c084c296145ce1b. 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/DEF056802512 — a six-check JSON result.
String Quartet No. 2 in A Minor, Op. 51, No. 2: III. Quasi minuetto, moderato - Allegretto vivace
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb58961b44de96134ca26d0036252efc4b5d2d2be6d84848dca95a082bffae327. 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/DEF055901473 — a six-check JSON result.
Piano Quintet in F Minor, Op. 34: III. Scherzo (Allegro)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x312c5214cab9fa7ccc067e48e6a11a264b3aa7826e7680178cc5c6b739715e71. Chain 2 (Bitcoin): anchored in block 960268 (2026-07-30T14:53:07Z), 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/DEF056802503 — a six-check JSON result.
String Quintet No. 2 in G Major, Op. 111: IV. Vivace ma non troppo presto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe021fff7fe59a48822f8edf7906d609bf173679adc68892a7ab6fbb2c343cee5. 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/DEF056702014 — a six-check JSON result.
Clarinet Quintet in B Minor, Op. 115: III. Andantino - Presto non assai, ma con sentimento
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca78de7290b82acf73ae834e1ddff89ccabcdf601403880ef602ab941c26e23b. 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/DEF056701383 — a six-check JSON result.
String Sextet No. 2 in G Major, Op. 36: III. Poco adagio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc249934dc8cab2e7b1fb799e3974cef76fd2f89a65c39e3cacaabf4715e72f7. 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/DEF056802513 — a six-check JSON result.
String Quartet No. 2 in A Minor, Op. 51, No. 2: IV. Finale (Allegro non assai - Più vivace)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1967c83d47f0a8fee653f5579a0112aee3b9f3b18185e42038e676a16d936e70. 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/DEF055901474 — a six-check JSON result.
Piano Quintet in F Minor, Op. 34: IV. Finale (poco sostenuto - Allegro non troppo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c45aa1cceee61fabf0b1a96fc08f692e47e32dcb96edbbe3bdac4157aa4ca70. 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/DEF056802504 — a six-check JSON result.
Clarinet Quintet in B Minor, Op. 115: IV. Con moto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd30b88974aa468d373f6d94eebeb16253c800b12d79604ef82f00519d1953494. 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/DEF056701384 — a six-check JSON result.
String Sextet No. 2 in G Major, Op. 36: IV. Poco allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fe14bec18f98e364f88b70431abe3c1b15ac47cb45fede9226e5cf3ed5dad7e. 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/DEF056802514 — a six-check JSON result.
Saint-Saëns: Cello Concerto No. 1 - Franck, Fauré & Poulenc (Bonus Track Version)
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Violin Sonata in A Major, FWV 8 (Arr. for Cello and Piano by Jules Delsart): I. Allegretto ben moderato
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Violin Sonata in A Major, FWV 8 (Arr. for Cello and Piano by Jules Delsart): II. Allegro
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Violin Sonata in A Major, FWV 8 (Arr. for Cello and Piano by Jules Delsart): III. Recitativo-Fantasia. Ben moderato - Molto lento
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Violin Sonata in A Major, FWV 8 (Arr. for Cello and Piano by Jules Delsart): IV. Allegretto poco mosso
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Cello Concerto No. 1 in A Minor, Op. 33: I. Allegro non troppo - Live
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Cello Concerto No. 1 in A Minor, Op. 33: II. Allegretto con moto - Live
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Cello Concerto No. 1 in A Minor, Op. 33: III. Molto allegro - Live
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Cello Sonata, FP 143: I. Allegro - Tempo di Marcia
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3 Songs, Op. 7: No. 1, Après un rêve (Arr. for Cello and Piano by Pablo Casals)
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Le Carnaval des Animaux, R. 125: XIII. Le Cygne (Version for Cello and Piano) - Bonus Track
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Sinfonia Concertante in E Minor, Op. 125: I. Andante
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Sinfonia Concertante in E Minor, Op. 125: II. Allegro giusto
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Sinfonia Concertante in E Minor, Op. 125: III. Andante con moto - Allegretto (poco meno mosso)
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Sonata for cello and piano in C Major, Op. 119: I. Andante grave - Moderato animato
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Sonata for cello and piano in C Major, Op. 119: II. Moderato - Andante dolce
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Schubert: Rosamunde - Berg: Suite Lyrique, Quatuor Thymos, Salomé Haller & Christoph Eschenbach
English Suite No. 3 in G Minor, BWV 808: VI. Gavotte II ou la Musette
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Der Rosenkavalier, Op. 59 / Act 2: "Mir ist die Ehre widerfahren"
Barbara Bonney - The Radiant Voice of Barbara Bonney
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Schubert: March for Piano Four-Hands in G Major, D. 928 "Kindermarsch"
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Children's March in G Major, D. 928 'Kindermarsch'
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Sonata For 2 Pianos In D, K. 448: 2. Andante
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Divertissement a la Hongroise in G Minor, D. 818: I. Andante
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Piano Concerto No. 21 in C Major, K. 467: II. Andante
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