Anastasia Huppmann (born 16 November 1988) is a Russian-born Austrian concert pianist. Her repertoire includes compositions from solo works of Frédéric Chopin, Franz Liszt, Joseph Haydn, Claude Debuss
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 0x6d67b7468e9c4ce5e82310501a5230972b6236f468772be3eb12b6e007658bd8. Chain 2 (Bitcoin): anchored in block 954065 (2026-06-17T08:10:43Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4c42627c-5595-44e1-b8a7-8a3ca1cad197.json and https://artists.proofprofile.net/proofs/artist/4c42627c-5595-44e1-b8a7-8a3ca1cad197.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
Polonaises, Op. 40: No. 1 in A Major, Allegro con brio "Military"
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 0x45583ed804d240e27f91fe45d47fdda8824a02a2ee2892650a8465aa725b9a9f. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBMJG1913806 — a six-check JSON result.
Nocturne No. 20 in C-sharp Minor, Op. posth
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00e972f63fa9b1663516edb240bc3211262443c638757804b5c34d4fa13cf5ba. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/GBMJG1913808 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06df57ee0b8b07bf10ed2619f57625c1bda072c566102905ba4722080c8ee540. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBMJG1913816 — a six-check JSON result.
Ludwig Van Beethoven (1770 - 1827) Sonata Quasi Una Fantasia No. 14 in C-Sharp Minor, Op. 27, No. 2 [Moonlight Sonata/Mondscheinsonate], I. Adagio Sostenuto, II. Allegretto, III. Presto Agita
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09df38a0b17faf9c33d646301c9bb8042788e8eea3fcde7bea05fee86ebd5bf1. Chain 2 (Bitcoin): anchored in block 960349 (2026-07-31T05:23:41Z), 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/CH6540879476 — a six-check JSON result.
Beethoven Piano Sonata No 8 in C minor Op 13 Pathetique
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ccd29c3b582ecd6ee8720ac063f48e7cbee0e4ae7eb04ff0565ad712ab08666. 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/GBMJG2400246 — a six-check JSON result.
Moonlight Sonata by Ludwig van Beethoven
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x180fb8a2fe99e33858ffe2e7e4502154e12b71ae5d8b389710b5bb80f01e902f. 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/GBMJG2302720 — a six-check JSON result.
Piano Sonata No. 14 in C-Sharp Minor, Op. 27 No. 2 "Moonlight": I. Adagio sostenut
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd6f4527c11737d70d018920801031d03c968783d31a8d6d8e41a1e8483e007c. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBMJG2302721 — a six-check JSON result.
Piano Sonata No. 14 in C-Sharp Minor, Op. 27 No. 2 "Moonlight": II. Allegretto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x768f4a26d5af40767f42302ca189e9d80177a662a43851a1214becfab1c25a70. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBMJG2302722 — a six-check JSON result.
Piano Sonata No. 14 in C-Sharp Minor, Op. 27 No. 2 "Moonlight": III. Presto agitato
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdaa5d75648cdcd55ab8d1f3d3b0c170b0ecb973ec7ed4c61d8a175b649b9b99f. 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/GBMJG2302723 — a six-check JSON result.
Beethoven: Piano Sonata No. 30 in E-Major, Op. 109
Beethoven: Appassionata Piano Sonata Op. 57 in F Minor
Piano Sonata No.23 in F Minor, Op. 57 "Appassionata": I. Allegro assai
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f7265d1fc582b30f5ea39cf67810395200f8aa5420d4dd10d228b4ab42284d9. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBMJG1718107 — a six-check JSON result.
Piano Sonata No.23 in F Minor, Op. 57 "Appassionata": II. Andante con moto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63ac8f49dd757e357b2e8f4e59ffe7c4f9f73c7bcdda21d4920203556aa8763d. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBMJG1718108 — a six-check JSON result.
Piano Sonata No.23 in F Minor, Op. 57 "Appassionata": III. Allegro ma non troppo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f5a8a6207f7ee89f10a7b7daa145e5a6354c5a34dc4067ebe57c0e039239116. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBMJG1718109 — a six-check JSON result.
Chopin: "Black Keys" Étude & Fantaisie-Impromptu
Études, Op. 10: No. 5 in G-Flat Major "Black Keys"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b8df8436dda31ebd5b5739ad95968e7335439841e0452a10601fbcf916fc00b. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/GBMJG1706877 — a six-check JSON result.
Impromptu No. 4 in C-Sharp Minor, Op. 66 "Fantaisie-Impromptu"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x131f66e24f6ad13baf5d0045df7c351e980ecc06a27297eea160e99e0db0014f. 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/GBMJG1706878 — a six-check JSON result.