Hildegard Hillebrecht (26 November 1925 – 7 October 2018) was a German operatic soprano. Career Born in Hanover, Hillebrecht studied singing after attending medical school and made her in the role
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 0xa5c0772d435ce0e484039ad35c4ad7831cf0fb8a193292651ecf25bf95ed02bf. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/622c884b-9e30-4c7c-b0d8-8e3bc1a7d7ae.json and https://artists.proofprofile.net/proofs/artist/622c884b-9e30-4c7c-b0d8-8e3bc1a7d7ae.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
The Blackest Bass: Gottlob Frick Portrait
Die Entführung aus dem Serail, K. 384: Wer ein Liebchen hat gefunden
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 0xeddb3a89cdf90308656b4f16a8dd65c716ede776ca0e8a2ec2ec31a831fe11be. 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/DEAD61804701.
Strauss: Friedenstag, Op. 81, TrV 271 (Recorded Live 1960)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8262a203e1cca8235697857c980f6499a4768e3f805a879fbff2b23e46d07820. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF058603930.
The Originals - Legendary Recordings From The Deutsche Grammophon Catalogue
Luigi Cherubini: Le porteur d'eau [Der Wasserträger] (1960)
Centenary Edition 1913 - 2013 Berliner Philharmoniker
Swan Lake Suite, Op. 20a: I. Scene "Swan Theme". Moderato
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82e412581ca87977501cdf08f4203ee4931348ffe2d79036d7b33bf75a404cfe. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/DEF057801272.
Mozart: Die Zauberflote K620 - Highlights
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09383ffe9b738f87088b7f081868edc9389ecb69e65fcdafa91f428b45daef66. 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/DEF056430601.
Die Zauberflöte, K. 620, Act I: No. 1, Zu Hilfe! Zu Hilfe!
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe525cde8b46d40cbcd4d4f0ce6220bbc38edea729f4d6d8273d335ce8596b37. 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/DEF056430602.
Die Zauberflöte, K. 620, Act I: No. 3, Dies Bildnis ist bezaubernd schön
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03a5d91ad6344c5e9027153f2e3865c629d0f332951bfe978f774e0d49978d34. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF056430604.
Die Zauberflöte, K. 620, Act I: No. 4, O zittre nicht, mein lieber Sohn!
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf421337e5f98dbbf26ed82ddea65f02b56601963e089a0c786ca94a1d68bbdcc. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF056430605.
Die Zauberflöte, K. 620, Act I: No. 7, Duet. Bei Männern, welche Liebe fühlen
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x384192531e19cbf9b0c883bcc8b6213b67e7abeec51c094240fc57685e3c0e20. 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/DEF056430606.
Die Zauberflöte, K. 620, Act II: No. 10, O Isis und Osiris
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa4b15cbb39508fb115a8e1a87f24d1e848b01261390e59e0e5b78436f446448. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/DEF056430607.
Die Zauberflöte, K. 620, Act II: No. 13, Alles fühlt der Liebe Freuden
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd16a741462860f14aa8f9bcae2bbcf8981b571bd336c1a80482e16e68fe4a74d. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/DEF056430608.
Die Zauberflöte, K. 620, Act II: No. 14, Der Hölle Rache "Queen of the Night Aria"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0a2d9cc39e2097e47d6499a79390f9691a260cc694b7081debceb4c0d5448f0. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF056430609.
Die Zauberflöte, K. 620, Act II: No. 16, Trio. Seid uns zum zweiten Mal willkommen
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab336083346dceb2704f3c0ffa388a78afd522b150af1f5c0bc2b6eac8850299. 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/DEF056430611.
Die Zauberflöte, K. 620, Act II: No. 17, Ach, ich fühl's
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaabbcbf2363f81b40e2214dd12b344b7eaee94beaf233a4d92e70b3d4b799a38. 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/DEF056430612.
Die Zauberflöte, K. 620, Act II: No. 18, O Isis und Osiris, welche Wonne "Chorus of the Priests"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x911536999c24561527dfd96cc5762c9fa8d19cb3dcaa9e491003c348efb60970. 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/DEF056430613.
Die Zauberflöte, K. 620, Act II: No. 21, Finale: g. Duet. Pa-Pa-Pa-Pa-Pa-Pa-Papagena!
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07292c3e92ff0b1c081324766fdf08882adbce9104219a4176044c3bae60ec91. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF056430615.
Wunderlich, Fritz: Rarities From Opera and Operetta
Wir Entdecken Komponisten: Wolfgang Amadeus Mozart – Glockenspiel und Zauberflöte
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe33ac840d9bcba7e6ab5c6167e8df9139328b6e5750f3f3044a0575090942a4a. 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/DEF058231861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1db918293c8712c0be2751bb98b37468f1de7ec7a96eae15d96fe0115785d1cb. 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/DEF058231862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44343c78f1752e73aea085a6bbe6bb090f4962f25655befec1d9afba826071fe. 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/DEF058231863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe61c8f9e3ea6e5a91d20ec78906555eaf1b178eccc3c754350401bbd9145d629. 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/DEF058231865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99fb22c2417105fca09fc5d0531b29ed569404b65ff243cfb83f742f697bf4c3. 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/DEF058231866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1738a13986ce7803a4f6bc96edcb77f00469c8e1fae70191add8ecd32c9f48f2. 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/DEF058231869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa93fb5cdb58a33bab277cea4cd48b24585c7776b2d12dc06f37ce728e2d56cdc. 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/DEF058231870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf2e5c4b0cec479642f6d7238ada429dbf0fbc049887130e0b49425f87531ecb. 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/DEF058231871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x350648f2c384f65e982f4f4043032e6fad0458c3d77715805d3c29acfd698f28. 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/DEF058231873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc91e73546e7f04a1e8806bcffc3d2c639a69be1db1299f257983bfef6b60098. 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/DEF058231874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf145e1fe1b82130698a046e106e4d7b8092804812475ad8e72d69a5f1ba2f030. 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/DEF058231876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d0da8e9b76403aa93c8dc65907c9e1286440714331bca57a5e317f1de069248. 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/DEF058231879.
Cherubini: Der Wasserträger (Sung in German)
Mozart Edition, Vol. 6: 6 Operas & Requiem
Wagner: Tannhäuser, Extracts (Mono Version)
From the Operas of Erich Wolfgang Korngold (1949)
Mozart: Idomeneo, re di Creta, K. 366 (Recorded 1956)
Richard Strauss: Friedenstag (München 1960)