Ruth Ziesak (born 9 February 1963) is a German soprano in opera and concert. Career Ruth Ziesak studied voice at the Frankfurt University of Music and Performing Arts with Elsa Cavelti and Christop
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 0x30e8ee528ea402cba20fdab60d3aa3851e8110289ee7a9acfb258c97ffe97224. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/85f5caaa-757b-4ef6-a164-eb92fd4c269d.json and https://artists.proofprofile.net/proofs/artist/85f5caaa-757b-4ef6-a164-eb92fd4c269d.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
Symphony No. 8 in E flat - "Symphony of a Thousand" - Part One: Hymnus "Veni creator spiritus": "Veni creator spiritus"
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 0x7ad2617cbda2f874e22613d63b9eacf46dd007fbae0637de40065c154d1955e7. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/GBBBB0100001 — a six-check JSON result.
Symphony No. 8 in E flat - "Symphony of a Thousand" - Part One: Hymnus "Veni creator spiritus": "Imple superna gratia"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x888acfce9b082decbdf83b52495e45a595db29c8a535330c3a5d0ccf985bf778. 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/GBBBB0100002 — a six-check JSON result.
Symphony No. 8 in E flat - "Symphony of a Thousand" - Part One: Hymnus "Veni creator spiritus": "Infirma nostri corporis"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb3d72de8d82da60b23930ca4b428f2dd0b15525a95536033370fdb0a837e0db. 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/GBBBB0100003 — a six-check JSON result.
Symphony No. 8 in E flat - "Symphony of a Thousand" - Part One: Hymnus "Veni creator spiritus": "Accende lumen sensibus"
Jongens en meisjes van het Kathedrale Koor St.Bavo, Haarlem
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b9dda3670b6298b5edb176747e95725220637f2c5952da6b0d4ddc865d01626. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/GBBBB0100004 — a six-check JSON result.
Symphony No. 8 in E flat - "Symphony of a Thousand" - Part One: Hymnus "Veni creator spiritus": "Veni, Creator...Da gaudiorum praemia"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6fd9e8a4d66efdfca45c3373f7656fc301565b56cf275720958ccfe289e7a44. 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/GBBBB0100005 — a six-check JSON result.
Symphony No. 8 in E flat - "Symphony of a Thousand" - Part One: Hymnus "Veni creator spiritus": "Gloria sit Patri Domino"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f8fc74f964511c57add9a7faab80a813d3b12d4e8e9202172fab7603dbcd16c. 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/GBBBB0100006 — a six-check JSON result.
Symphony No. 8 in E flat - "Symphony of a Thousand" - Part Two: Final scene from Goethe's "Faust": Poco adagio: "Waldung, sie schwankt heran"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x361f98e280458905fa909c2e7c290026c3a72a534af7874661bc91d0d4848404. 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/GBBBB0100007 — a six-check JSON result.
Symphony No. 8 in E flat - "Symphony of a Thousand" - Part Two: Final scene from Goethe's "Faust": "Ewiger Wonnebrand"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf1d0c2836c5db46cad213aa8b10a118f2d07e9453e10d44c9b313696800fdf3. 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/GBBBB0100008 — a six-check JSON result.
Symphony No. 8 in E flat - "Symphony of a Thousand" / Part Two: Final scene from Goethe's "Faust": "Wie Felsenabgrund mir zu Füßen"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8115171bd6af37131b194d3642e04c68bfb6fef74e02bc968f6463ac32cd0292. 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/GBBBB0100009 — a six-check JSON result.
Symphony No. 8 in E flat - "Symphony of a Thousand" - Part Two: Final scene from Goethe's "Faust": "Gerettet ist das edle Glied"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff074ff5ffb7dddf1d4853ca9499d5422935518874b45728f16107ec7b4671a6. 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/GBBBB0100010 — a six-check JSON result.
Symphony No. 8 in E flat - "Symphony of a Thousand" - Part Two: Final scene from Goethe's "Faust": "Höchste Herrscherin der Welt"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4040e55b72aa1c33574f907a77218e89401fcda94287fb793f9e1761e814174. 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/GBBBB0100012 — a six-check JSON result.
Symphony No. 8 in E flat - "Symphony of a Thousand" - Part Two: Final scene from Goethe's "Faust": "Bei der Liebe, die den Fussen"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x831c09bc7eb5a89e0d6f842c8672ecf9fc8483d8ce0ef163b28a15107f86cdde. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/GBBBB0100014 — a six-check JSON result.
Symphony No. 8 in E flat - "Symphony of a Thousand" - Part Two: Final scene from Goethe's "Faust": "Neige, neige, du Ohnegleiche"
Jongenskoor van het Kathedrale Koor St. Bavo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86521efbb788b894070cdf5df008dc22e238ceff40594a77c12148cd167df07a. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/GBBBB0100015 — a six-check JSON result.
Symphony No. 8 in E flat - "Symphony of a Thousand" - Part Two: Final scene from Goethe's "Faust": "Komm! Komm!"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cbf80d8c5d11214fc5feb6ba421a760c14eba288119a4074eb9bd9460097ece. Chain 2 (Bitcoin): anchored in block 960163 (2026-07-29T23:20:38Z), 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/GBBBB0100016 — a six-check JSON result.
Symphony No. 8 in E flat - "Symphony of a Thousand" - Part Two: Final scene from Goethe's "Faust": "Blicket auf zum Retterblick"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72558cf76029085e6c14f46f872ad3cafe30060f6461b2590b126ee49bc44645. 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/GBBBB0100017 — a six-check JSON result.
Symphony No. 8 in E flat - "Symphony of a Thousand" - Part Two: Final scene from Goethe's "Faust": "Alles Vergängliche"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x300c4d305de50462550bb9e41c96c9f4d5dba5ef96f6522928630e8237e9fd81. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/GBBBB0100018 — a six-check JSON result.
Cherubini: Messe solennelle Nr. 2 d-Moll
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6614b2e0be2ddaba469e0f8bb48e84ab4735afd92240f9a5b4d48ebeef2e0515. 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/DEB112000610 — a six-check JSON result.
Ode an die Freude - die 9. Sinfonie / Europa Hymne (Ode to Joy - Beethoven's Symphony No. 9)
Klassik die man kennen muss! Die größten Werke der Klassischen Musik
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x561a857202fc377f6c6e9e434fa1b32789094282b2e1590086650236be00dd7d. 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/DEP621800012 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cbf80d8c5d11214fc5feb6ba421a760c14eba288119a4074eb9bd9460097ece. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/GBBBB0100016 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b9dda3670b6298b5edb176747e95725220637f2c5952da6b0d4ddc865d01626. 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/GBBBB0100004 — a six-check JSON result.
Sechs Lieder, Op. 1: III. Vöglein fliegt dem Nestchen zu
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e9d0fc3a9d384684e6bceec955612523bfabdcc401f8925e93758852f57581a. 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/DEB111000803 — a six-check JSON result.