Marie-Elisabeth Hecker (born 5 March 1987 in Zwickau) is a German cellist.Conversation with Marie-Elisabeth Hecker In 2005 she was one of the youngest participants to win first prize at the Concours d
1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0bc549cb7278a7fcbb2c1c8788468ff9264f56e544283e66fa8626e5d1369e4. Chain 2 (Bitcoin): anchored in block 953648 (2026-06-14T15:20:52Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/44ab3de2-a892-49cc-bf05-fa48022af1a9.json and https://artists.proofprofile.net/proofs/artist/44ab3de2-a892-49cc-bf05-fa48022af1a9.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Dvořák: Dumky & Zypressen: Shostakovich: Piano Trio No. 1 (Live)
Winds & Strings: Spohr, Ibert, Janacek & Widmann (Live)
Smetana, Ravel & Watkins: Piano Trios (Live)
Haydn, Rossini & Schubert: Duo, Trio & Quartet
Der Tod und das Mädchen, Op. 7 No. 3, D. 531 (Arr. X. van Dijk for String Quartet)
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x685e5ed7aaf893a4ac7e257adc1f66bc1e025a5d5c0c8a7c28320efe30494868. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLE422006601.
Piano Quintet in A Major, Op. 114, D. 667 "Die Forelle": II. Andante
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5192efc50e439b824a398b5709212cfa9decedd5b65a2bb8fb53dfae61158485. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLE420800402.
Piano Trio No. 2 in E-Flat Major, Op. 100, D. 929: III. Scherzando. Allegro moderato
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf61356b6c90ed694de3409257aea2b36ddf7f2dcab0bd2ad0da169533b44e687. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLE420603107.
Du bist die Ruh, Op. 59 No. 3, D. 776 (Arr. X. van Dijk for String Quartet)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf97d60e4edbdec34095874ec50b1700d8e8d7d2da77c3212936db5a48830b7d1. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLE421701514.
Violin Sonata in D Major, Op. 137 No. 1, D. 384: II. Andante
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x846cb11fe5bfb733de57ab07473458ac6cc6f4529bca73bfbea7c9415a4b360d. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLE420900102.
Erlkönig, Op. 1, D. 328 (Arr. M. Reger for Voice & Orchestra)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00ef83f96d9a589f0528df4f3951692a6cf76872ec9995581391603bddc06fd7. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLE421401002.
Cello Concerto in E Minor, Op. 85: I. Adagio - Moderato
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ab9ec90fc0498d82f06045229c28f86f9d1e8a79db78dae9cd8ee58cfdf727f. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR50X1628301.
Cello Concerto in E Minor, Op. 85: II. Lento - Allegro molto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x906bf09bf568abe13965391b05f51c9e607d6ba73320d80d70549ebb4189409e. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR50X1628302.
Cello Concerto in E Minor, Op. 85: III. Adagio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bf59a287dd491a096326cded8e9b2e5badcb480f1c80c85ea083e113771e15d. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR50X1628303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbed2db8ee1720d9e7d5ae576fd9083ff2f6647d545d88fa37fbfaae3d887f599. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR50X1628305.
Piano Quintet in A Minor, Op. 84: I. Moderato - Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1991a649ebbf0ce7cd021c758d7d143c3c8fac35e6cae6c67dfaa543fdf30c5. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR50X1628306.
Cello Concerto in E Minor, Op. 85: IV. Allegro - Moderato - Allegro, ma non troppo - Pocco più lento - Adagio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4ab3f0f983a17e048c1b7a67920d325273e27061b5a6200724eb74d48e6b0e1. Chain 2 (Bitcoin): anchored in block 960199 (2026-07-30T02:30:29Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR50X1628304.
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
Piano Quintet in A Minor, Op. 84: II. Adagio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8d7d8e150bc05ecf5676452a097fcffd15a7da7d9ab07ba473d68cebd6bfb15. Chain 2 (Bitcoin): anchored in block 960106 (2026-07-29T12:41:21Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR50X1628307.
Piano Quintet in A Minor, Op. 84: III. Andante - Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62f93f3448b757b30ffcc9f402af86df12d3d06c0f4504edcb4306bf229d1c2d. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR50X1628308.
Beethoven: Piano concerto 3 - Triple Concerto
Schubert: Schwanengesang & String Quintet
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9cd4f1e25b6b0962dcc371636d9dea712c730ee7fd2d109e7de090307b9d549. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR50X2074801.
String Quintet in C Major, D. 956: III. Scherzo. Presto - Trio. Andante sostenuto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84e21281dd58ae01f9f37e814c35254d4b93d2f29ad9e4e26448723b354d4551. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR50X2074819.
Schwanengesang, D. 957: No. 3, Frühlingssehnsucht
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb95ce6eb2bcdd72cae4597dfc9a850166a82b4edfc021fe1ac2b394d1a76cd69. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR50X2074804.
String Quintet in C Major, D. 956: IV. Allegretto - Più allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4df016eee6e790b2f26fc0d96a9da488d59112201b1b2c0137fd8e1ac4dddeab. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR50X2074820.
Schwanengesang, D. 957: No. 1, Liebesbotschaft
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52d40a97ac9f928f1259ed72b06ccf670b4dc103bf6e57c8940b420088191834. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR50X2074806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xada13062910c7ab6ac1151acb0b7423075ddf393335da2b62fad3bd80990a0b5. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR50X2074809.
Schwanengesang, D. 957: No. 8, Der Atlas
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e49a9785b1b5df607797948aaae5467282a46c9aeab716a97c6854be8b04a6a. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR50X2074815.
String Quintet in C Major, D. 956: I. Allegro ma non troppo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c13e0eb3983ee86f7f8fcd48c3f0dffc5a4902edfaf3b202ef86fe6a0177524. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR50X2074817.
String Quintet in C Major, D. 956: II. Adagio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x824c313eec45b704c698a6405e3dac5743a11f5ffa3f258f19a36de4af980e72. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR50X2074818.
Cinderella, Op. 87, Act II: Waltz-Coda (arr. M. Rostropovich)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad761eac9b57d3c9a365baa15b5fa88dd9710b21306c0387cbf21e4db920a832. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEAD60802914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb76ee436cfc9c40c558cb313e7cde9096d3bda38941f164424608ce0f7bcded. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEAD60802923.
Pentatone Limited - Creating Timeless Classics
Schubert: Arpeggione Sonata & Trio No. 2
Arpeggione Sonata, D. 821: II. Adagio in E Major
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x426a2492dc5590e7eb15cd1a32322a3bef17d118d8a23a4be7ea5d049ba4d5c0. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR50X1728406.
Piano Trio No. 2 in E-Flat Major, Op. 100, D. 929: II. Andante con moto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x007a0dfa214dc61f62bd69c54bcae6d61d3f21cc4d30a9c74bde1765bc8c35ce. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR50X1728402.
Arpeggione Sonata, D. 821: I. Allegro moderato in A Minor
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x704d9556180202d507b7a6eca434ed2731835fb3eba4df2780b9eb10f2f2bd55. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR50X1728405.
Arpeggione Sonata, D. 821: III. Allegretto in A Major
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4166a4d7a923f45ae3344e354eb2b76f36e5f7707f81fbbcd3c9a68c1b6bd102. Chain 2 (Bitcoin): anchored in block 960487 (2026-08-01T00:15:43Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR50X1728407.
Haydn, J.: Cello Concerto in C Major / Ginastera, A.: Glosses Sobre Temes De Pau Casals (Cello Fiesta)
Schubert: Piano Quintet & Variations on "Trockne Blumen"
Piano Quintet in A Major, Op. 114, D. 667 "Die Forelle": I. Allegro vivace
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73a71045542172a54d50d589a11fe9b51d2b5bb9167dafc7d27a1842aeb8fa28. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLE420800401.
Variations on Trockne Blumen for Flute and Piano, Op. 160, D. 802: Variation II
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x366e1336d1208348132a5360478f3bdc34c8bad167a53dda778789ac6dc04355. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLE420800409.
Piano Trio in E-Flat Major, Op. 148, D. 897 "Notturno"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x446ea9a549062757d22c52fa88ab8113b471e12cbead40b90b27871cfe4e61c3. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLE420800415.
Piano Quintet in A Major, Op. 114, D. 667 "Die Forelle": III. Scherzo - Presto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f4bcc7c13fb56f01a8ad9f58add8e5e016858e622689d9c750516864c15db75. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLE420800403.
Piano Quintet in A Major, Op. 114, D. 667 "Die Forelle": IV. Thema - Andantino - Variazione
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d9a01877293c81c688961270b37d2aa10eca6684680e183cfb3b77026926152. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLE420800404.
Piano Quintet in A Major, Op. 114, D. 667 "Die Forelle": V. Allegro giusto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81404bbab357da770adfc613cd8d3ced3259d5b84f62de119e3ce4d8eae188c6. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLE420800405.
Robert Schumann & York Höller (Klavier-Festival Ruhr Vol. 41)
Live from the Marlboro Music Festival - Ravel & Debussy
Rachmaninoff: Sonata for Cello and Piano in G Minor, Op. 19: III. Andante
Sonata for Cello and Piano in G Minor, Op. 19: III. Andante
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x406a10f4e0ead035d61a5de6ccb54e86d8108a1f3762475dd975b3b3b629e1cc. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR50X2482721.