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 0x6b38b86891bfdfa2089ecaec19998bcf676fd65b1df4b2492918c86f5f9bf005. Chain 2 (Bitcoin): anchored in block 954705 (2026-06-21T13:42:37Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ecc6b04d-8a9a-4327-823e-70d21c0fd221.json and https://artists.proofprofile.net/proofs/artist/ecc6b04d-8a9a-4327-823e-70d21c0fd221.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
6 Balladen, Op. 18: No. 6. Ballade vom Nigger Jim
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 0xfbc4a6fd9f1ea6771aac5061f34b11bba0bd35f617b351e4bd8ea2dcd471fb4c. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DES380010431 — a six-check JSON result.
4 Balladen, Op. 22: No. 1. Ballade von den Baumwollpfluckern
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca50e780968ecc8f2a03e30322df1cf421b8edb0d04fabc6c9de5e995b489952. 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/DES380010432 — a six-check JSON result.
Kuhle Wampe, Op. 27: No. 1. Solidaritatslied
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x193c98bdc68efd5aeafe851ca643530ea68b10b4d2b397d49488164e8c305fb0. Chain 2 (Bitcoin): anchored in block 959137 (2026-07-22T14:03:35Z), 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/DES380010436 — a six-check JSON result.
Die Mutter (The Mother), Op. 25: I. Wie die Krahe
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bbf7ac45c50d3a7019365126a1b6f04018a20b1ff426cde19c5af6203147aac. 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/DES380010438 — a six-check JSON result.
Die Mutter (The Mother), Op. 25: III. Der zerrissene Rock
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67b0484deeb72f4de8da345665448c069671ad11ba59e50e7cd8559c19a841cd. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DES380010440 — a six-check JSON result.
Die Mutter (The Mother), Op. 25: V. Lob des Kommunismus
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb76286414cd94b94ea916b9c88fb06d8497f3054edff38a49d42059f3b5bccbb. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/DES380010442 — a six-check JSON result.
Die Mutter (The Mother), Op. 25: VI. Lob des Lernens
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7f448aa072dcc0582fac5de5850a23cfa80393b7c1b3b362e84a27622d03e48. 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/DES380010443 — a six-check JSON result.
Die Mutter (The Mother), Op. 25: VII. Lob eines Revolutionars
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c9c1aef488dd7d44b5ce9c2006705c51bac6732fa9b28bf5805cafdfe16c1c5. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/DES380010444 — a six-check JSON result.
Die Mutter (The Mother), Op. 25: VIII. Im Gefangnis zu singen
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf26c61adb8500e3bcb6c7adf4e51876ab7e99449ef3b72fe76a50daf9d508378. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/DES380010445 — a six-check JSON result.
Die Mutter (The Mother), Op. 25: XII. Steh auf! (Die Partei ist in Gefahr)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc444b7c59cfd90a287249a7ad8a507f25f7bc5cf9c2681d30b1d79557b5b27c. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DES380010449 — a six-check JSON result.
Die Mutter (The Mother), Op. 25: XIII. Lob der Dialektik
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdca5f62e29c50becef9fda9240a97d32b0f40acec3e85de9927a6ca0b23a8d1e. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DES380010450 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c15cdfee73131e2ab92d5682cdd4656456f37782d5211c9e34fb53ee2596588. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DES380010451 — a six-check JSON result.
4 Wiegenlieder fur Arbeitermutter, Op. 33: No. 1. Als ich dich in meinem Leib trug
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28d453d915374a718746ce0451fb2ea622ad29ab3a8ef502852bf35f8e242f2b. 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/DES380010452 — a six-check JSON result.
Hanns Eisler: Orchestral Music, Vol. 2 - Kleine Sinfonie / 5 Orchestral Pieces / Scherzo / Rhapsodie / Winterschlacht-Suite / Wilhelm Tell
Aram Khatchaturian: Masquerade Suite / Gayaneh / Mily Alexejewitsch Balakirew: King Lear (Guhl, Stein)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e5324dbabfecaba78ddcbed5f7897281d3c930d78dc06bfbe7bbe67c57b9470. 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/DES380011928 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed74e8359f4645c787be17ccba15132fb9df55b112c72976992e13b9399d125a. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DES380011930 — a six-check JSON result.
Léo Delibes: Coppélia Ballet Suite - Johann Strauss II: Ritter Pásmán Ballet Music
Biber, Telemann, Handel, Vivaldi, Endler, & Stolzel: Baroque Trumpet Gala
EISLER, H.: Deutsche Sinfonie, Op. 50 (Leipzig, Radio Chorus, Leipzig Radio Symphony, Guhl)
Deutsche Hymnen - Klingende Dokumentation mit historischen Originalaufnahmen
Europahymne Ode an die Freude - Aufnahme 1994 Lissabon
Orchestre d'Harmonie des Jeunes de l'Union Européenne
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcea2d31cfe1fab91d70b3fbef2e29302eed1b8e1c7fd502ba4ab87947399ba4. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/DEE701803939 — a six-check JSON result.
Lied der Deutschen (3. Vers) - Historische Aufnahme, Mai 1933
Erk´scher Männer-Gesang-Verein von 1845 Berlin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a06b96b9dc65c5245fdc452a257a362f59c580924583fc19ec1573abe4ba63a. Chain 2 (Bitcoin): anchored in block 957043 (2026-07-07T13:52:39Z), 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/DEE702004093 — a six-check JSON result.
Was ist des Deutschen Vaterland - Historische Aufnahme, Reichssender Berlin 1939
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb55a3a32287e7331241aac332f7c570411da149226b548ceda4f1ff7f430da9. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEE701903941 — a six-check JSON result.
Rundfunk-Jugendchor Wernigerode (Männerchor)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0b93d13cbc6eb9164ad7f9e1b8a4024b8cefa99c266b483316e9265a4cd868b. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/DEE700000722 — a six-check JSON result.
Die Wacht am Rhein - Historische Aufnahme 19. Mai 1905, Philadelphia PA
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc139f2085e4623433de1314ef1dac45cd910dea4d98eb8d9faeca1abb0752db2. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEE701903942 — a six-check JSON result.
Heil dir im Siegerkranz - Historische Aufnahme Oktober 1901
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf18f022d316c1582a46adaaf773d3a5e2f0e0f78023249c3ba7b14de274d0a90. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEE701903943 — a six-check JSON result.
Ein feste Burg ist unser Gott - Aufnahme 1990
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82805e20c9d6e13df1bd18cc45a0e57b8f5f489014c5436409915afee9463201. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEE701203097 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9c390bc8658a12a9232e072367a17c4411c788a2e4802fed37322dd4a53e5e1. 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/DEE701903944 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf824661219e4c84618ba82f56af22aae26b80c92cbbf1fb4c771f6432b030a6d. 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/DEE700000796 — a six-check JSON result.
Zogen einst fünf wilde Schwäne - Aufnahme 2003
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6eca660e4d2a9ce12ab51e16fd59668af7223122e325817a9384250057e225ed. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEE700002240 — a six-check JSON result.
Sag mir, wo die Blumen sind - Live-Aufnahme 6. Oktober 1962 Düsseldorf
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03f7b7d2913fea825d77006f0c97fffd15296e28c300fd29f3579c1a1bab06d8. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEE701903945 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0a5e9c3bdf0b5631dbb1d68208c7210342143486c6e43c5a8eb75af64140cc5. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/DEE700002291 — a six-check JSON result.
Anmut sparet nicht noch Mühe (Kinderhymne) - Historische Aufnahme 1951
Instrumentalensemble des Berliner Rundfunks
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x161b57ada05b07a10e062735d805a4ecf441a4695b2a7afacb6811ddb0e8d518. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/DEG210240822 — a six-check JSON result.
Die Deutsche Nationalhymne - Nationalhymne der DDR (Auferstanden aus Ruinen) - Live
Solistenvereinigung des Deutschlandsenders
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fdfb6419afd3f19dab53057e617d12539b319e1f3c172323683e3ee46987e8a. 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/DEE701303173 — a six-check JSON result.
Deutsche Nationalhymne (Einigkeit und Recht und Freiheit) - Live-Aufnahme Deutscher Bundestag 24. 10. 2017
August Heinrich Hoffmann von Fallersleben
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0e8bf63f92c18a0e6f40deecd08cf4c8d04545582f5b6856157e344e206527d. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEE701903946 — a six-check JSON result.
Tchaikovsky: The Sleeping Beauty, Ballet Suite, Op. 66
Richard Wagner: Polonia, WWV 39: Overture - Symphony in C major, WWV 29
Symphony in C major, WWV 29: I. Sostenuto e maestoso - Allegro con brio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd51f047aa7a6f4412910bbc2c61bca11d24e9f05b29f1070366f46a756d90a30. Chain 2 (Bitcoin): anchored in block 960506 (2026-08-01T03:50:58Z), 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/UKJE72300036 — a six-check JSON result.
Symphony in C major, WWV 29: II. Andante ma non troppo, un poco maestoso
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bf0492b00757ce655f8fbc3c88212b8d4ff33c4fde46cf86a4b5df885eb5141. Chain 2 (Bitcoin): anchored in block 960509 (2026-08-01T04:30:37Z), 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/UKJE72300037 — a six-check JSON result.
Symphony in C major, WWV 29: III. Allegro assai
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53725d14bdfe1124a2b9a71af9696d54c28cfc9c1c134b8ba44bd4b26c401fe7. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/UKJE72300038 — a six-check JSON result.
Symphony in C major, WWV 29: IV. Allegro molto e vivace
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26d12c66ad35692260b3b87deaf0a50e3999d03831f3aed20a81a35f7b90a02a. 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/UKJE72300039 — a six-check JSON result.
Eisler: Die Teppichweber von Kujan-Bulak / Ernste Gesänge / Winterschlacht-Suite
Eisler: Die Teppichweber von Kujan-Bulak / Lenin-Requiem / Winterschlacht-Suite
Eisler: 3 Lieder for Voice and Chamber Orchestra / Divertimento / Tagebuch des Hanns Eisler / Suite No. 5 / Nonet No. 2 / Galgenlieder
Suite No. 5, Op. 35, "Dans les rues": VI. March Tempo: Andante eroico - Andante
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63e66e4a9a1597e21903c2f77ae84da6f78fbb30870d421581f9a49790dc04db. 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/DES380011331 — a six-check JSON result.