Falk Struckmann (; born 1958 in Heilbronn, West Germany) is an operatic bass-baritone, particularly prominent in the Wagnerian repertoire. A Kammersänger of the Vienna State Opera, he made his debut
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 0x0aacc98769f3c41f64263e54495b66a6a2e47c49b00b41febc45d83103dd2459. 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/e2f34c31-a1cf-4539-8cf3-8cc25dbc8667.json and https://artists.proofprofile.net/proofs/artist/e2f34c31-a1cf-4539-8cf3-8cc25dbc8667.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Lohengrin: Act III Scene 1: Treulich gefuhrt, ziehet dahin (Wedding March) (Chorus)
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 0xdc726343f0943e49a140ef255097fe9d4339e89c0f3bccd592bbfd049029c1a0. 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/DEAD60900432.
Beethoven: Symphony No. 9 in D Minor, Op. 125 "Choral": IV. Presto - "O Freunde, nicht diese Töne!" (Ode to Joy) [Excerpt]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29e8b4f8c12e619d10efe0931aa441df6c0d324d91ca41411051fb22e546bb21. 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/FRZ209200011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10697096af6b5fbcffdccdd38649793d6939de4973b864107b767a71f68477a7. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/DEAD60900431.
Fidelio, Op. 72 (Ed. Lühning & Didion), Act II: Finale. Heil sei dem Tag… Des besten Königs Wink und Wille... Wer ein holdes Weib errungen
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8276f8bf7763b1d7f99293b7962d71af5f9c5e9a564e822cbb60057c927a9a9. 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/GBBBA1045730.
Fidelio, Op. 72 (Ed. Lühning & Didion), Act I: No. 7, Aria & Chorus. Ha! Welch ein Augenblick!
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6f7d80fe89d05b0c0515cb48504651fa7e11a56a384c2dedd1f19933b0d1985. 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/GBBBA1045713.
Wagner: Tristan und Isolde, Act 1: "Frisch weht der Wind" (A young sailor, Isolde, Brangäne, Kurwenal, Tristan, Chorus)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbad50ab455d42161200c12c5094d393b06937b5e76e6e0442c9a5a7ed8cbb95. 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/DEA809428603.
Fidelio, Op. 72 (Ed. Lühning & Didion), Act I: Dialogue. Etwas neues vorgefallen?
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe79649e90b35b837a2c3dcc92eb062a2b0e15ab1a499ed1c148118eb7a1508f2. 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/GBBBA1045712.
Fidelio, Op. 72 (Ed. Lühning & Didion), Act I: No. 8, Duet. Jetzt, Alter, jetzt hat es Eile!
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18a4c44b9a346ca491219e7f7dc2d7af0c047595f942df7dd9431a78fdd30eb6. 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/GBBBA1045715.
Fidelio, Op. 72 (Ed. Lühning & Didion), Act I: Recit. Leb wohl, du warmes Sonnenlicht
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46751f8b5a0f90903e68beb7b3e583d4ef5612b5c01e704db044dadb4d525b9f. 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/GBBBA1045722.
Fidelio, Op. 72 (Ed. Lühning & Didion), Act II: Quartet. Er sterbe!
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x245d601c9867dcaabb1adcd01f98bda98cb1340f9d2a911b6a2a719f7fcaceb6. 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/GBBBA1045728.
Fidelio, Op. 72 (Ed. Lühning & Didion), Act I: Dialogue. Verwegener Alter
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x274a381537d6249a15785f4d1cdd41dff5b915f29b435b004fa054e29e0081c3. 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/GBBBA1045721.
Wagner: Tristan und Isolde, Act 1: "Auf! Auf! Ihr Frauen!" (Kurwenal, Isolde, Brangäne)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9d0307214f1736a56c9f3c91914c21c5b30a3c66078880b344819b6eb377d5d. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/DEA809428606.
Wagner: Tristan und Isolde, Act 1: "Tristan!... Isolde!" (Isolde, Tristan, Brangäne, Kurwenal, Chor)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe82ac8b14fb28c3d1fd1519ad74e49635bce168da9a0ee75ab1bc334b7a13781. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/DEA809428609.
Wagner: Tristan und Isolde, Act 2: "Rette dich, Tristan!" (Kurwenal, Tristan, Melot)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf26c79d852b0606804a4aebb3d0024794ef1784677230bf5debe6309d6d6db40. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEA809428618.
Wagner: Tristan und Isolde, Act 3: "Kurwenal! He!" (A shepherd, Kurwenal, Tristan)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2b4105de06b9155ccab7fc3697de36d95e672b6f17c546ce81a94e90df4c84c. Chain 2 (Bitcoin): anchored in block 960173 (2026-07-30T00:11:40Z), 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/DEA809428622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4650d73ed134d20d557a695845ed25cfefa025389ca6f2eb17989e10c195bae. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/DEAD60900401.
Wagner: Tristan und Isolde, Act 3: "Dünkt dich das? Ich weiss es anders" (Tristan, Kurwenal)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3f4b06d93ccb9bfa86cceb0248c0c2af1a0a3e52045bb184fea1b186ed1085a. 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/DEA809428623.
Wagner: Tristan und Isolde, Act 3: "Noch ist kein Schiff zu sehn!" (Kurwenal, Tristan)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69ad3e354e1c15584a0fef55893221f63402033e659c41ae8a040ed7df917b31. 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/DEA809428625.
Wagner: Tristan und Isolde, Act 3: "Bist du nun tot? Lebst du noch?" (Kurwenal, Tristan)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a6bf281f30b2781a980d43678e8fd9643a3458eaf363dd782cb5b95badbc8dc. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEA809428626.
Wagner: Tristan und Isolde, Act 3: "O Wonne! Freude!" (Kurwenal, Tristan)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87df2ffeba09f7593488f06756841b2cf5bb1ec727d836d8e8d9d37a5f6e09df. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/DEA809428627.