Hans Müller-Kray (13 October 1908 – 30 May 1969) was a German conductor, music director and academic teacher. Life and career Hans Müller was born in Essen-Kray. He grew up as the youngest of 14 ch
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 0x43976933f74f017c948866713052711fef80afada792d37593d1741d6ebc115a. Chain 2 (Bitcoin): anchored in block 953592 (2026-06-14T05:36:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/03241179-fa7c-48d0-8cc3-c4c885887e62.json and https://artists.proofprofile.net/proofs/artist/03241179-fa7c-48d0-8cc3-c4c885887e62.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
Mozart, Beethoven & Others: Piano Concertos (Live)
More Piano Giants: Annie Fischer, Vol. 8 (1958)
Beethoven & Brahms: Works for Piano (Live)
Nicolai: Die lustigen Weiber von Windsor
Nielsen: Symphony No. 2 "The 4 Temperaments"
Mozart: Piano Concerto in C Major, K. 503
Mozart: Piano Concerto No. 20 in D Minor, K. 466
Chopin: Piano Concerto No. 2 in F Minor, Op. 21
Shostakovich: Symphony No. 6 in B Minor, Op. 54
Piano Concerto No. 20 in D Minor, K. 466: 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 0x02ee9d1a820d3be9b3d501e5f71ab8ba024c9d5f2275b8cebf8905a8dce2b128. 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/USB8U1517483 — a six-check JSON result.
Grosse Sänger unseres Jahrhunderts: Inge Borkh
Bach, Mozart, Beethoven & Others: Violin Concertos
Fritz Wunderlich: Arias from the 20th Century (Live)
Weber: Clarinet Clarinet Concerto No. 1 in F Minor & Clarinet Concertino in E-Flat Major (Live)
Symphony No. 104 in D Major, Hob. I:104 "London": II. Andante
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0025766227df49119fd8873387c901dcfa3303b01417c53072af984b2b936dd6. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/USB8U1700221 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6a7288294af9c9b58ba2a3cd1442f824aaf6fb332ca49b37edd2b4894e58ab3. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEAD60801630 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7428ae870450858f573a0d43e5c43806701a70cbec2f6ab771228c95111c7c8c. 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/DEAD61607801 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0e5fc8d3777979c98ac01e316bdb33d0b253df577ee77164fc429f1520c7103. 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/DEAD61607802 — a six-check JSON result.
Ein Freund, Ein Guter Freund (From "Die Drei von der Tankstelle")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4753f3763bd0d455ae3228acb8879b8a19168deda8835c7226ff9255b79b489. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEAD60904144 — a six-check JSON result.
Nur nicht aus Liebe weinen (From "Es war eine Rauschende Ballnacht")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d673476c32185059fbd174ca77770951a115f1aa5d451b65bf00fec0d28c3d6. 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/DEAD61607803 — a six-check JSON result.
Wochenend und Sonnenschein (From "Chasing Rainbows")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c40471f08e0149c270a69534b8ae706adb019ea21273dd4dda0a1e15af27ea0. 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/DEAD60904150 — a six-check JSON result.
Man müsste Klavier spielen können (From "Immer nur... Du!")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x148ddcd2ad8533cf9c022051f2f44083dadb26160f8ec54c9297bc555d01e370. 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/DEAD61607804 — a six-check JSON result.
Ich bin von Kopf bis Fuss (From "Der blaue Engel")
Friedrich Hollander Jazz Symphony Orchestra
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6759601e20195ee353a13755ed65e36b386e3735b9c148467fdd25ef495fa7e8. 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/DEAD60904163 — a six-check JSON result.
Wie einst im Mai: Die männer sind alle Verbrecher
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d8925bd5e59e95a8cf5c4b04887a7d4d4cf0ad31e459212c41c432cee5a6bb6. 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/DEAD61607805 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf93197ccb868b65a9fe381f4357eb0d438c1149adab67e4bb3b5ccc745809b59. 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/DEAD61607825 — a six-check JSON result.
Im Prater blüh'n wieder die Bäume, Op. 247, RSWV 166
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20acd328ac0b40f558b4a2cd8106aa1c5af308b274d524e19e3bcf5795473f99. 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/DEAD61607806 — a six-check JSON result.
Viktoria und ihr Husar: Reich mir zum Abschied noch einmal die Hände (Sung in German)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ecd39a2ac13d761042652d03473543daf0375945c2d2247f9a06d5a198ed662. 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/DEAD61607828 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x844fd24c07fd2affbcb8579433a89998b71fa284b9a6a9cb5530d34bf8be57d9. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/DEAD61607809 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29de7afc95b9ef781535577f80a90b38c9f9a8e2a64283ca1eded32339a05554. 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/DEAD61607829 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92d224a0e5eeb201fe39f36abfd0238740593313d2f64f2cecc5c35c338513dc. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEAD61607810 — a six-check JSON result.
Das ist die Liebe der Matrosen (From "Bomben auf Monte Carlo")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43ce1f9999d7a0afff4f4e5e7eb1c2ce106627535492c90847f7f602cd1d3b51. 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/DEAD61607830 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa070c48d54614725bdbf0fee91c6c3c6222f64d9b64dd0a212aa016503c64028. Chain 2 (Bitcoin): anchored in block 960387 (2026-07-31T10:06:30Z), 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/DEAD61607812 — a six-check JSON result.
Fahr mich in die Ferne, Du blonder Matrose
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c4ff183cab717fbd8f01a5cb598ac32baeffc3892e2fd978bc1673d0b7483e4. 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/DEAD61607832 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1d9822e877de8b410c72c65a2f4a840db11a989667fd4f367aabcc0870823a4. 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/DEAD61607813 — a six-check JSON result.
Regentropfen, die an Dein Fenster klopfe
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb69d63fbfa3d7adf854187a78c8e246b9b62cacabff913d18c1405e2668ec728. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEAD61607833 — a six-check JSON result.
Das gibt's nur einmal (From "Der Kongress tanzt")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa94ded2cc7ed839169e79594da8040a3797da6d62d18cbed0316f1b7eada9d67. 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/DEAD61607818 — a six-check JSON result.
Verdi: Macbeth (Sung in German) [Recorded 1951]
Die Csardasfurstin (The Gypsy Princess), Act II: Duet: Tanzen mochte ich
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5baf890912e3e068ac71483de1e52b516f11d66ca36e743d9107dcd72a273d64. 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/DEAD61402501 — a six-check JSON result.
Der Zigeunerbaron, Act II: Entrance: Her die Hand, es muss ja sein
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5154af0417706be809414ff14e74a88f163b216e9442b5de2ba776f5ecc6bac3. 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/DEAD61402502 — a six-check JSON result.
Der Vetter aus Dingsda, Act I: Ich bin nur ein armer Wandergesell
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97a8aaed1da2bc463c94cb114e2899a62e788da05eda950e43487024ae85dcde. 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/DEAD61402503 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb5dcdad3e9f7e6bff6839dde9e60268a21743103257c0356af336d2270c6709. 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/DEAD61402504 — a six-check JSON result.
Die Csardasfurstin (The Gypsy Princess), Act II: Machen wir's den Schwalben nach
Northwest German Radio Symphony Orchestra
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedc24961964a5ec56a682ae1b55686614ca8afd43f9728350e2bb78dd08e2a58. 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/DEAD61402505 — a six-check JSON result.
Eine Nacht in Venedig (A Night in Venice), Act I: Komm in die Gondel
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7f33baca861ccb12e6e3cce21b99b4f7d4231ff427d4a106c7687c041779d94. 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/DEAD61402506 — a six-check JSON result.
Wunderlich, Fritz: Legend (The) - Arias, Opera and Operetta Scenes and Songs
Rimsky-Korsakov: Das Märchen vom zar Saltan (The Tale of Tsar Saltan)
Mozart: Sinfonia concertante in E-Flat Major, K. 364
Mozart: Symphonies Nos. 34, 36, 38, 39 & 41
Mozart, Beethoven, Ravel & Others: Works
Milestones of a Legend: Váša Příhoda , Vol. 4
Beethoven: Triple Concerto, Op. 56 (Live)
Dvořák: Cello Concerto in B Minor, Op. 104
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa920b2a4b90aeb0b654780e36441819cd56626395515bc7ea6f5c4643c479fe2. 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/DES805603498 — a six-check JSON result.
Mozart: Concerto for 2 Pianos, K. 365 & Piano Concerto No. 17, K. 453
Mozart: Piano Concerto No. 22 in E-Flat Major, K. 482 - Schumann: Piano Concerto in A Minor, Op. 54
Shostakovich: Symphony No. 5 in D Minor, Op. 47 (Live)
Mozart Edition, Vol. 5: Concert Arias & Lieder
Rimsky-Korsakov: Das Märchen vom zar Saltan
Mozart: Violin Concerto No. 5 in A Major, K. 219
Mozart: Symphonie No. 41 "Jupiter" (Mono Version)
Cherubini: Der Wasserträger (Sung in German)
Chopin: Concertos pour piano Nos. 1 & 2 (Mono Version)
Handel: Serse, HWV 40, Act 1, Scene 1: Arioso. "Ombra mai fù" (Serse)
Fritz Wunderlich - Der große deutsche Tenor
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x240f918bf0de1c26875f8122cb31b96a977d3c0a8e9b5ba1623404ed682c5673. 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/DEA340702058 — a six-check JSON result.