Gerd Türk is a German classical tenor. Biography Gerd Türk received his first musical training as a choir boy at the cathedral of Limburg. He studied in Frankfurt and then at the Schola Cantorum Ba
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 0xd715784223d1ff9b5a3753ce888b2a742e6c1f4ccd79cd6144c7d3f05128a841. 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/314f7f17-b892-4994-abe8-1b3cbbbb8974.json and https://artists.proofprofile.net/proofs/artist/314f7f17-b892-4994-abe8-1b3cbbbb8974.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Mass in B Minor, BWV 232: Gloria. Domine Deus, Rex coelestis (Soprano I and Tenor)
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 0x2416d769a3c71fcadee2b507e80ae0be93bd2a8b090401ee697951c447a60355. 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/SEAER0701080.
Mass in B Minor, BWV 232: Benedictus: Benedictus qui venit (Tenor)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ec8751f42563f67b82c4d048ca45f69c6804b4d0b320194ac77b3a6645f2814. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SEAER0702120.
Wir danken dir, Gott, wir danken dir, BWV 29: Aria. Halleluja, Stark und Macht (Tenor)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31749cdc330b0932f99b07625c2886c5ded4182b021660577a0ed023f6fb3f89. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/SEAET1281150.
Der Herr ist mein getreuer Hirt, BWV 112: Der Herr ist mein getreuer Hirt (Chorus)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c98aa5201d80db8e7042d18b9437623fa7c69a854661d96113b78f15154a381. Chain 2 (Bitcoin): anchored in block 960150 (2026-07-29T21:51:49Z), 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/SEAET1281080.
Wachet auf, ruft uns die Stimme, BWV 140: Aria Duet. Mein Freund ist mein (Soprano, Bass)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d1eb6696570230639ef35fbca85322492700524d962d02867d06dc156c26855. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/SEAET1281060.
Der Herr ist mein getreuer Hirt, BWV 112: Aria. Zum reinen Wasser er mich weist (Alto)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd92adc5f0b559fad4e9e5d3f3e8bbd335dd0f730dff0fb60bf0d31e38ffdc90d. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/SEAET1281090.
Meine Seufzer, meine Tränen, BWV 13: Aria. Meine Seufzer, meine Tranen (Tenor)
Bach, J.S.: Cantatas, Vol. 42 - Bwv 13, 16, 32, 72
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49d089b71b20a262252d40cf9c6520fdf01594b17b3def3ba869363de5449c14. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SEAER0811130.
Wachet auf, ruft uns die Stimme, BWV 140: Recitative. Er kommt, er kommt (Tenor)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dd8b24f4e3c008dfcbde6ae568f610ecaef872be4693f71c8d0f8eb3a6285c6. 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/SEAET1281020.
Wachet auf, ruft uns die Stimme, BWV 140: Recitative. So geh herein zu mir (Bass)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb005eaeccfd60dbb9d6a31ad821c0eaae5ae1af0f07e4ac7b0c35753ba120f29. 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/SEAET1281050.
Ich habe meine Zuversicht, BWV 188: Sinfonia
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a14714e5cf0df8bbe6bb509095cd8f125c687429b70cd2ce42d9a830adb81ca. 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/SEAES1191010.
Sie werden euch in den Bann tun, BWV 183: Aria. Hochster Troster, Heilger Geist (Soprano)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe7f52c572beb901fc7f44203e09b9e75618eaaaf5177a87811b400e4b20fa79. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SEAEQ0841220.
St. John Passion, BWV 245: 1. Chorus. Herr, unser Herrscher, dessen Ruhm… (Version IV)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb90c415edc382b1385b1bd0fdab3a819f7ed6033d5d9b2959d5c8651bb261b55. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SEAEJ9821010.
Matthäus-Passion, BWV 244, Pt. 1: No. 2, Da Jesus diese Rede vollendet hatte (Evangelist, Jesus)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f1bda3284cdc7bfc91642f0f48b7d27d374052b3b5f5097e389f89036543392. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLA460911564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16a442c7cbd84e389c137e94c465d58a2a0f0faeb313c4e058c7c602a6d44b93. 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/SEAEV1581050.
Sehet, wir gehn hinauf gen Jerusalem, BWV 159: Aria. Es ist vollbracht (Bass)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fdd726b7b3232adaa6027311002720ded03bc12084b513bc99087ba426375d8. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SEAES1191160.
Gottlob! Nun geht das Jahr zu Ende, BWV 28: Aria. Gottlob! Nun geht das Jahr zu Ende (Soprano)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5774fa7b7ab132929f0456829a96f17b218eeb97bb23d88be40f5d2369d4432f. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SEAEQ0841130.
Gottlob! Nun geht das Jahr zu Ende, BWV 28: Nun lob, mein Seel, den Herren (Chorus)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c170cb08e50f212dae1b34a3777aa8f43cb331332c8cb6f7f5ae0d8de7bec23. 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/SEAEQ0841140.
Ich bin ein guter Hirt, BWV 85: Aria. Seht, was die Liebe tut (Tenor)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26546203e18cde82f332ea896769803d4499afd37186e7482410651bb8556d0e. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SEAEQ0841280.