Bernd Alois Zimmermann (20 March 1918 – 10 August 1970) was a German composer. He is perhaps best known for his opera Die Soldaten, which is regarded as one of the most important German operas of the
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 0x4207cc86a330763b5c0140f720bef02daa9d5ca88d7d2f8dbbcca7dc1948b6d6. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/68e217d8-5138-4a25-95c8-8ae88f231ba0.json and https://artists.proofprofile.net/proofs/artist/68e217d8-5138-4a25-95c8-8ae88f231ba0.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Zimmermann: Cello, Oboe and Trumpet Concertos; Canto di speranza
Bernd Alois Zimmermann - Recomposed, Vol. 1
Zimmermann: Canto di speranza / Violin Concerto
Bernd Alois Zimmermann: Concerto Pour Violoncello
Trumpet Sonata in D Major, Z. 850: 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 0x0ee6f0df9e3c9e7cd4e781c5a5a038acd3d3ac1d0a96ef630d8d6c96277e0897. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/DEB261801021.
Trumpet Sonata in D Major, Z. 850: II. Adagio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e3512faed4d43e4b358a3c63e10d23c065b68fac148e19d1b0f0d2b2b14a8ef. 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/DEB261801022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbd76fc6529545e7b13dcf90a86c3e91caebee5dfc6ad7348a13336cfdd289d1. 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/ES5701700589.
Trumpet Concerto in E Flat, H.VIIe/1: 2. Andante
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7072fe07dc440145de0a49920bfa3d842cf6c16db02b2d0d7b2986dfc5ba0ddb. Chain 2 (Bitcoin): anchored in block 960379 (2026-07-31T09:25:34Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES5701700590.
Trumpet Concerto in E Flat, H.VIIe/1: 3. Finale. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45bfed2a98bfca1914215631b893313f46a950cf2cabf7ac92636c4053daa50d. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES5701700591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef85d2d9db9bd19a8b0c184f1116df1644f5be0d2e11dee020a2437798d30495. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES5701700593.
Trumpet Concerto in D: 2. Allegro moderato
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x915ec53af6da9138bedb1e3d714b558f2059f27c8ff773e8232d534120eae10f. 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/ES5701700594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01f668832eb366fe8273eb99e8394073306a37d3931e8f91a6bafcfea1e4af55. 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/ES5701700614.
Martinu, B. / Zimmermann, B.A. / Strauss, R.: Oboe Concertos
Zimmermann: Présence; Perspektiven; Intercomunicazione; Monologe
Bernd Alois Zimmermann: Lieder und frühe Kammermusik
Baryton Trio in D Major, Hob. XI:113: Allegro di molto (Arr. for cello and piano)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3371993dc56db4bbdcbe0a0b7007c66c1f30e44662ed7af5e863cf65ad10ab4f. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR7JM1879010.
3 Old Viennese Dances: II. Liebesleid. Tempo di Ländler (Arr. for cello and piano)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4a196d6ef174fb71ba0b9efa30804672405f1585915a712e687f1c56a722cb2. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/FR7JM1879020.
Hungarian Dances, WoO 1: II. Allegro non assai in D Minor (Arr. for cello and piano)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbd02ed99a5e910a95b895c84cead431925050c2df96e56b589e0686815e0ac2. 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/FR7JM1879030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa3db7b2a46205b6d43c581c8119e37929507efe4575e570106c36fd22c64b15. 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/FR7JM1879040.
Spanish Dances, Op. 54: II. Serenade. Allegro moderato
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdab846a203af2963a92e20d43f542579c2492e9e388ac4db7f9a6218215d0a5f. 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/FR7JM1879050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53ef9bed3f823134e63e97759c60b975fd3b1f710144adfa9da22a608d18cce0. 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/FR7JM1879060.
6 Morceaux, Op. 51: VI. Valse sentimentale in F Minor. Tempo di Valse (Arr. for cello and piano)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14196338ef863813dd59a294b2be566c2aa82409a68b5a99f5c679921c26a5be. 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/FR7JM1879070.
10 Klavierstücken: VIII. Imitating Albéniz. Con Passion (Arr. for cello and piano)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10a62d9914dcce99aa211217d7f718a14f849b7eaf9da636a0c6212fcb8aa523. Chain 2 (Bitcoin): anchored in block 960419 (2026-07-31T15:20:33Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR7JM1879080.
Nocturnes, Op. 9: II. Andante in E-Flat Major (Arr. for cello and piano)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd085953aaceb65327c29d5d34b249e555231f19b21661147e6153020e172c36b. 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/FR7JM1879090.
3 Old Viennese Dances: I. Liebesfreud. Allegro (Arr. for cello and piano)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba91572e1d74a58aa9fa524cf2ba170f3f59c0922e5726c9cd5a88ac91838521. 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/FR7JM1879120.
Le Carnaval des animaux, R. 125: XIII. Le Cygne. Andantino grazioso
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa34035106af52f0a4ad3dbb13980bf0561e9004fbe3ce2c5203d7b26b5556cbf. 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/FR7JM1879150.
Léocadia, FP. 106: Les Chemins de l'amour (Arr. for cello and piano)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fa72f8db4e5a4fcd17879f20456c511dd2f1dc3300cf1ae42812bda9cb84271. 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/FR7JM1879160.
Improvisation on Bach: Alabama. Slowly, pensively (rubato) (Arr. for saxophone and cello)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5fd90df3ed34dd78b686c026b636d5a07ebe42df257b689a554b173a4dfc0bb. 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/FR7JM1879170.
Symphony No. 13 in C Major, Hob. II:47 "Toy Symphony": Adagio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd0f9319d0549acaec0bde483063cc0560eae30b1eebcbcdc32ab8116ca6d90b. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR7JM1879190.
Zimmermann, B.A.: Fromme Helene (Die) / Rheinische Kirmestanze / Smetana, B.: The Bartered Bride
Zimmermann: Alagoana, Sinfonie in einem Satz, Photoptosis & Stille und Umkehr
Darmstadt Aural Documents, Box 4: Pianists
The Firebird Suite (1945 version): I. Introduction - Prelude and Dance of the Firebird - Variations
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1adc700f2b49dd32026004d3921e75ff5613ca6c19a6aadd7fc67ab3c743b421. 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/DEAD70405601.
The Firebird Suite (1945 version): II. Pas de deux - Firebird and Ivan Tsarevich
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdea4fbcf564dacb29bb3da28e9e9c08fa991e1090b0480470e088b524162bfe2. 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/DEAD70405602.
The Firebird Suite (1945 version): III. Scherzo - Dance of the Princesses
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f7a532490d5f897cadf4fa3e39eba2ea553b03fa09334b5df1fa30c2c0a97ba. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEAD70405603.
The Firebird Suite (1945 version): IV. Rondo - Khorovod
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dbc65b01da7e506baadf65e0cd63e58467b1c7c5f12e15728285e3a09bec75e. 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/DEAD70405604.
The Firebird Suite (1945 version): V. Infernal Dance
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dff4c01f83da5f9a42fd8896357b532d5dabdc064a15671714982f7b1484e17. 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/DEAD70405605.
The Firebird Suite (1945 version): VI. Lullaby - Firebird
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e12c2554b1d5bcefbae5c735c3dab4bac850327de0b6f331f1982143349944c. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/DEAD70405606.
The Firebird Suite (1945 version): VII. Final Hymn
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3451d7e6af789a3cfe1974de01bd6a1f6368b59cb619ed7a40f75ba63d3ff9dd. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEAD70405607.
Allusions and Beyond (Transcriptions and Transformations for Piano Duo)
Zimmermann: Violin Concerto, Photoptosis, Die Soldaten Vocal Symphony
Bernd Alois Zimmermann: Présence / Intercommunicazione
Zimmermann: Sinfonie in einem Satz (1. Fassung)
B.A. Zimmermann: Complete Works for Piano Solo
Zimmermann: Un petit rien / Das Gelb und das Grün / Omnia tempus habent / Metamorphose
Bernd Alois Zimmermann: Märchensuite / Canto di speranza / Impromptu / Alagoana. Caprichos Brasileiros
Zimmermann: Dialoge Monologe Perspektiven Photoptosis
Zimmermann: Présence; Intercomunicazione
Bernd Alois Zimmermann: Requiem für einen jungen Dichter
Tschechischer Philharmonischer Chor Brno
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5c5a8dea17cf12dec3f990de073e118ae740fe8e21fb759e7eccc271d33d247. 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/DEK910810401.
Zimmermann: Ekklesiastische Aktion and Sonatas for Violin, Viola & Cello
Stravinsky, I.: Concerto for Piano and Wind Instruments / Zimmermann, B. / Fortner, W.: Symphony / Ligeti, G.: Lontano
Concerto for Piano and Wind Instruments (1930 version): II. Largo
North German Radio Philharmonic Orchestra
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4d508864c72a46e4c4540a67b6d85c0832b6edba35d20c6356e0f0897303b2a. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEAD60505395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bd20cea36deb26357ba0c936c1c70c9241350ee14273204c386914108dc8e2c. 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/DEAD60505402.
Cello Suite No. 1 in G Major, BWV 1007: I. Prélude
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44c0ab109460b0d0e7fef324c4ffc5de2048cfa5dc9305695e8c94c3e485cb0c. 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/DEDS51725701.
Variations on a Theme by Beethoven, Op. 35: III. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77adedc0d014c4a5d8c864d9913ad2016ee828120e2d97c29bada5136a26c78b. Chain 2 (Bitcoin): anchored in block 960427 (2026-07-31T15:59:18Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLY332105134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6199a4f4c3b40d36dc9d8f8b6d461384b999ba60e959e6b79c9572b98074e20e. 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/DEF057401020.
Three Little Pieces for Cello and Piano, op.11 (1914)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x574f79c4919002b26204d4c3e65504f9242d810ba0e00625faddae99a31fa844. Chain 2 (Bitcoin): anchored in block 960296 (2026-07-30T19:11:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF057401030.