Rudolf Christ (20 March 1916 in Vienna – 20 April 1982 in Vienna) was an Austrian tenor concert and opera singer. Christ began his career in 1939 as chorister in the Vienna Volksoper. He then studied
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 0x9838632225e1461d16127aa8deaade5902bf03bebb67bec7c67d44e58fa13794. Chain 2 (Bitcoin): anchored in block 954689 (2026-06-21T10:35:31Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e1df89e7-f031-47cf-a4e8-55de40313842.json and https://artists.proofprofile.net/proofs/artist/e1df89e7-f031-47cf-a4e8-55de40313842.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
Kodály: Te Deum, Danses de Marosszék & Danses de Galánta (Mono Version)
Der Mond, Act I: "Vor Zeiten gab es ein Land" (Erzähler)
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 0x0c8f2572e2bb878c17edf010fac839d24939e8366e3146b81e0afb67faf5c468. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/DEF161534801 — a six-check JSON result.
Richard Strauss: Les grands opéras - La discothèque idéale de Diapason, Vol. 7
Strauss Ii, J.: Die Fledermaus (The Bat) (Schwarzkopf, Gedda, Karajan) (1955)
Brothers Grimm's Fairy Tales in Operas: Die Kluge
Künneke: Der Vetter aus Dingsda, Ausschnitte (Mono Version)
Orff: Der Mond: "Verzeiten gab es ein Land" (Erzähler)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe997ef9c25b532a85a9ab10a245d1306db3abfb4e549c88fc88b24934acc9037. 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/GBAYC5700076 — a six-check JSON result.
Orff: Der Mond: "So brachte Petrus die Toten zur Ruh" (Erzähler)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6701371223c6b2f11d529a75a3288cc61dfc3a2217e78e6be8c7a1d2d202ae2. 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/GBAYC5700100 — a six-check JSON result.
Orff: Der Mond: "Ach, da hängt ja der Mond!" (Kleines Kind, Chor)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34049d8c9d3b8f564a0e0a64b5d5666e436d4a7d86dc8445c75879a09a4bc115. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAYC5700101 — a six-check JSON result.
Strauss, R: Capriccio, Op. 85: Einleitung
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bd2ac4e1a1d49fd07cf4fff932c7e0d1c059ecbc830b80e0ffe509fdb300552. Chain 2 (Bitcoin): anchored in block 960276 (2026-07-30T16:01:17Z), 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/GBAYC0001402 — a six-check JSON result.
Strauss, R: Capriccio, Op. 85, Scene 1: "Bezaubernd ist sie heute wieder!" (Flamand, Olivier)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54fdf8990ed17389b2be0460019d57dbeadd2f0ab69cbfa646392416bdff443a. 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/GBAYC0001403 — a six-check JSON result.
Strauss, R: Capriccio, Op. 85, Scene 13: Mondscheinmusik. Andante con moto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa810071f9f4be7f42ac5807cbf4e184c265e123223c4035c43b5da8df6e2217c. 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/GBAYC0001444 — a six-check JSON result.
Orff: Die Kluge: "Oh hätt' ich meiner Tochter nur geglaubt!" (Bauer)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bcfd1ceda6f289be602ce9f7d4099a530e97d42dd39a6f96fb698ac2235d9a9. Chain 2 (Bitcoin): anchored in block 960422 (2026-07-31T15:27:29Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAYC5600170 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6701371223c6b2f11d529a75a3288cc61dfc3a2217e78e6be8c7a1d2d202ae2. 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/GBAYC5700100 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34049d8c9d3b8f564a0e0a64b5d5666e436d4a7d86dc8445c75879a09a4bc115. 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/GBAYC5700101 — a six-check JSON result.
Bach, JS: Jauchzet Gott in allen Landen, BWV 51: No. 1, Aria. "Jauchzet Gott in allen Landen"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2e1ad72cf163fe2c6222c0825204f9eedff609c14b63be71f4b726f346bdb7b. 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/GBAYC9901960 — a six-check JSON result.
Glanzvolle Operetten: Die Czardasfürstin
Staatliches Wiener Volksopernorchester und Chor
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f4fa4fe9be230be6e64e05117855c9a0f36c0e71c5aab00c7d4492277747eb1. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/ATB056600010 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ddb224da481a02185ad95e305461b56034accde20c0768e6e06c7563d641468. 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/ATB056600011 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ea67ae82707b8250faca16fb1b0e8d20734b5184f7ee36c9f6379d72efa6f9a. 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/ATB056600012 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce5914e321c78687d58fe3d0347920d4ec8295933fc2ecaa7099252b0b99e2bf. 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/ATB056600013 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x105dfb105d9436b6e21ba5ee770046cebd78bc118b541f44e4a8a4cc71706ec0. Chain 2 (Bitcoin): anchored in block 960435 (2026-07-31T16:33:26Z), 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/ATB056600014 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c29f7ba9bebbc644ce2d7dcf3e5f937457c89aebb750d88052f764ec7eea5e2. 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/ATB056600015 — a six-check JSON result.
Staatliches Wiener Volksopernorchester + Chor
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa45b7170f7a24c0c62dd33049a595b6da3b3ef7b35b5ef9aee0e15b0b562f259. 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/ATB056600016 — a six-check JSON result.
Liebchen mich reißt es: Hurrah, man bleibt ja nur einmal
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb97e9bd92e60ae4009b9dfca3e9a5e3391665fe4ee92283febbb8476c4053598. 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/ATB056600017 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf707481fa5155d8b285aac98a466b9bc8fe65856329b474f826f2796087cd1fe. 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/ATB056600020 — a six-check JSON result.
Die Fledermaus (1999 Digital Remaster): Ouvertüre
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x016d35b737a312fb39467338d3cd96ce42d9138418abb66ed3ce4cebbac0fb31. 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/GBAYC9900609 — a six-check JSON result.
Die Fledermaus (1999 Digital Remaster), Act II: Herr Chevalier, ich grüße Sie!....Brüderlein, Bruderlein und Schwesterlein (Eisenstein/Franck/Falke/Rosalinde/Adele/Chor/Orlofsky)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14f4b0ecfffe3749eac34a8c8d55c230a25448855f229458815100084cd18013. 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/GBAYC9900642 — a six-check JSON result.
Orff: Carmina Burana; Die Kluge (Highlights)
R. Strauss: Salome (Clemens Krauss: Complete Decca Recordings, Vol. 8)
Wolfgang Amadeus Mozart: Credo Mass, KV. 257, Missa Brevis, KV. 275, 2 Masonic Cantatas
Oscar Straus: Der letzte Walzer (Konzertversion)
Die Geschichte des deutschen Schlagers 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92085030c8a1c323ad48ac37ea29413f7c9abf85709efb581ccedc1736b038eb. 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/UKMUY1726047 — a six-check JSON result.
Ruthilde Boesch - Echo eines Sängerlebens
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf43f827135c3c5e39e82e39df5f16aeceb803bd3f2c25f06318a677a667e04e. 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/ATMA40511827 — a six-check JSON result.
Legenden der Operette: Elisabeth Schwarzkopf
Es war einmal... Grimms Märchen in der Musik