Ortrun Wenkel-Rothe (25 October 1937 – 14 December 2025) was a German operatic contralto.sources biographical data: death notice Mannheimer Morgen, 3.1.26 and death notice Rhein-Neckar-Zeitung, 3.1.26
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 0xcd639d448f66397eeaa9a601f24a42863ee7ccdcc0b70cfd30db47c1743de1c2. Chain 2 (Bitcoin): anchored in block 953754 (2026-06-15T06:45:19Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ad71e6f0-a0a9-4063-83f7-079d49e4c470.json and https://artists.proofprofile.net/proofs/artist/ad71e6f0-a0a9-4063-83f7-079d49e4c470.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
L'art vocal en Italie aux 17ème et 18ème siècles
Die Zauberflöte, K.620, Act I: Der Vogelfänger bin ich ja
Opera - Världens vackraste arior / The Most Beautiful Arias in the World
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 0x3c4276197384d433de2448d6d22e6ca0e4002388c71e90974c4d59405741135d. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/GBAYC8100043.
Die Zauberflöte, K.620, Act I: Dies Bildnis ist bezaubernd schön
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x581005f2c3663ba37334cffcd652c5d84885627825fe975336906d083848a4b4. 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/GBAYC8100044.
Requiem in D Minor, K. 626: III. Sequentia: Tuba mirum
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb21ece4c1cb832eae85beee87aea7885f7c827e0bcba750bd3631625fb94a1ee. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEE470400097.
Requiem in D Minor, K. 626: III. Sequentia: Recordare
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x417d12a21a0743cc3d5df937df076136022e8c263d0ff5c6b1dc1cfc5471bf33. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEE470400099.
Requiem in D Minor, K. 626: VI. Benedictus: Benedictus
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf394f0070c04776adeeca884ccd0fdd602317ed191b2db5e9b6d1b70e0f5e39. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/DEE470400105.
Mozart: Requiem in D Minor, K. 626: IV. Tuba mirum
Rachel Yakar, Ortrun Wenkel, Kurt Equiluz, Robert Holl, Nikolaus Harnoncourt & Concentus musicus Wien
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x637abff557ca8a079aec13ef8bf97786ed0c88d62f7cf21b5dafd5c83d1a23b9. 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/DEA808200103.