Cornelia Wulkopf (born 1952) is a German operatic mezzo-soprano and contralto. A long-time member of the Bavarian State Opera, she has performed leading parts at international opera houses and festiva
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 0xd56aa757a899ea3c5f3b5fcb4715d68cede3174b8edf64b68abe735c516f9827. Chain 2 (Bitcoin): anchored in block 954555 (2026-06-20T12:10:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a89effb7-e4e4-4a13-ac0c-8985944404db.json and https://artists.proofprofile.net/proofs/artist/a89effb7-e4e4-4a13-ac0c-8985944404db.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Schubert: Lazarus, oder Die Feier der Auferstehung, D. 689
Stiegler, K.: St. Hubertus-Messe / Bruckner, A.: Antiphon / Mass, "Windhaager" / Chaussier, H.: O Salutaris / Horing, M.: Partita
Mozart: Apollo & Hyacinthus (Complete Mozart Edition)
Apollo et Hyacinthus, K.38 / Act 1: No. 1 Chorus et Oebalus "Numen o Latonium!"
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 0x8c5c1318e9aff7a25ec0234aeaab5562144a7ecc924cbe1d49bf5a42a62e1c19. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/DEF058140203.
Bach, JS: Mass in B Minor, BWV 232: Kyrie eleison I
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f31b4192d6efb126681bdcd248af900d29de9cf9192851d2b0f945a095361ad. 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/GBAYC0401685.
Bach, JS: Mass in B Minor, BWV 232: Patrem omnipotentem
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x463eb0cdb644a6a1e2c8809fc631812c312cacac29f26de0267b2f3f3488c204. 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/GBAYC0401700.
Bach, JS: Mass in B Minor, BWV 232: Gloria in excelsis
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba5bb741a68895cacd881c42d27a8dc39ad8518d36e6bd421f7dbd933034dcb1. 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/GBAYC0401689.
Bach, JS: Mass in B Minor, BWV 232: Et in terra pax
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x955ce2bbe3431432ee8a214a5654dbafef9bf2cfdce160d2f708237b33fd223f. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/GBAYC0401690.
Bach, JS: Mass in B Minor, BWV 232: Laudamus te
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8360eec0c60071f6bec510108df00e195d858e7add62ee5beaf307df74789590. 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/GBAYC0401691.
Bach, JS: Mass in B Minor, BWV 232: Domine Deus
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba35ed91477396af63e12014b42e6e932f07e2196a69311f1cd539cc39374440. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAYC0401693.
Bach, JS: Mass in B Minor, BWV 232: Qui sedes ad dexteram Patris
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a4382dc3592b9700a301549540e85372923a5125e3eead32f9b14b049526173. 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/GBAYC0401695.
Mozart: Complete Edition Vol.11: Vespers, Oratorios etc
Litaniae de venerabili altaris sacramento in B flat, K.125: 1. Kyrie eleison
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8acadfa74f3e23c317eccfb0dcfe9eb24ced049710442bd72c2fe9dca61a30c. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/NLA508201714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0643f2382f459e95c4d8377fcf5e778505263a676f67adc2fbf6b4833850579. 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/NLA508900301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2679847089a5434866a4759fbc47f63bbcf9c09185f2175b340c5c3fde6dff29. 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/NLA508900302.
Litaniae de venerabili altaris sacramento in E flat, K.243: 1. Kyrie eleison
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf025da7ccb3bd02f5a271476061d951d826f4f64a556d540dcac9b66b9beba51. 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/NLA507728901.
Litaniae Lauretanae BMV in D, K.195: 2. Sancta Maria
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x061d963a752a4f565d1cc662bf88e23451e2646019a4a89047b6fa3625181a87. 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/NLA507728914.
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): IV. Rondo - Khorovod
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dbc65b01da7e506baadf65e0cd63e58467b1c7c5f12e15728285e3a09bec75e. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEAD70405604.
Wagner: Der Ring des Nibelungen, erster Tag - Die Walküre
Mendelssohn: Elijah, Op. 70, MWV A 25 (Live)
Júlia Várady (Bayerische Staatsoper Live)
Mozart, W.A.: Litaniae De Venerabili Altaris Sacramento, K. 243 / Concert Arias / Overtures
Beethoven: Mass in C Major / Mozart, W.A.: Vesperae Solennes De Dominica
Dietrich Fischer-Dieskau (Bayerische Staatsoper Live)