Theodor Guschlbauer (born 1939 in Vienna) is an Austrian conductor. Decorations and awards 1995: Austrian Cross of Honour for Science and Art, 1st class 1996: Honour "Victoire" for his work on the
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 0xd200b493a6409c133f5a24c43f3bad46833c3c3c7ae8edd197f5eb418dd846b5. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/585dde4c-0d89-4d80-9fce-d017bd747f4a.json and https://artists.proofprofile.net/proofs/artist/585dde4c-0d89-4d80-9fce-d017bd747f4a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Rachmaninov: Piano Concerto No. 2 in C Minor, Op. 18: II. Adagio sostenuto
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 0x0104c7d473e34eb665a18e381680e799bce26e677cb64726f6b34617954af3b3. 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/FRZ208501103.
Rachmaninov: Piano Concerto No. 2 in C Minor, Op. 18: I. Moderato
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11d3bc4176f0a99494cf718a692ac0ae0663e7b6e9f7cebeead20c024e8eff5b. 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/FRZ208501102.
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 0x0db5965e867e020fd801d576cb3cb7c6d3eb1649716252fabca5bcede3c82adb. 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/GBAYC9303266.
Serenade in G Major, K. 525 'Eine kleine Nachtmusik': I. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3f9ac605b42b3dd9b803ced33776f3400c06bfc0b668979087e77f2778f4ab6. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/FRZ200300258.
Serenade No. 13 in G Major, K. 525 "Eine kleine Nachtmusik": I. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3ec958e1ba4981d0043b42429510f6be1f11d68a8065d6d325d893a3de6ba52. 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/FRZ207310801.
Mozart: Flute Concerto No. 1 in G Major, K. 313: II. Adagio ma non troppo (Cadenza by Rampal)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf5e28cd6803dfa54c01498bf62ad3e8a6f406d41ed0a75c1e8731f646d59a22. 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/GBAYC1500346.
Mozart: Piano Concerto No. 21 in C Major, K. 467: II. Andante (Excerpt)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9d249130b24244f93e4cb1478708f26e7d10aa2539e1f99272d62b4068f321e. 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/FRZ207391007.
Mozart: Flute Concerto No. 1 in G Major, K. 313: I. Allegro maestoso (Cadenza by Rampal)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2aa936fe955925ad851ecc930b0d4a71a4c3fa6e724f3d9f74d20b0df8dd42a7. Chain 2 (Bitcoin): anchored in block 960225 (2026-07-30T08:04:30Z), 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/GBAYC1500345.
Mozart: Flute Concerto No. 1 in G Major, K. 313: III. Rondo. Tempo di menuetto (Cadenza by Rampal)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0947ed913dc94e7f73a130f5cf125c197676ba866eac87153a399d12f35515f5. 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/GBAYC1500347.