Lena Neudauer (born 1984) is a German violinist. Life Born in Munich, Neudauer started playing the violin at the age of 3. She first took lessons with Helge Thelen and later with Sonja Korkeala. At
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 0xa135a19f5f4f605eef33ebe2173724a27b963b0e3137558c9e193120840a5980. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/66ab17e3-8369-4a27-b103-ba1b9a29b263.json and https://artists.proofprofile.net/proofs/artist/66ab17e3-8369-4a27-b103-ba1b9a29b263.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
GAIA Music Festival 2012: Music of Krenek & Webern (Live)
Schumann: Complete Works for Violin & Orchestra
Piano Concerto in G Major, Hob.XVIII:4: I. Allegro
Württembergisches Kammerorchester Heilbronn
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 0x58a9d3118cc0623d652c9d0bed504b5faa3c25985e8d31439558677a4659b4b4. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DES382221101 — a six-check JSON result.
Piano Concerto in G Major, Hob.XVIII:4: II. Adagio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8be6939d552cbb6483cd2863df4fd903bfd9dadab55e60f22083089c9cc2a0d. 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/DES382221102 — a six-check JSON result.
Piano Concerto in G Major, Hob.XVIII:4: III. Rondo. Presto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24cf5c5f80576edb1fd9a38a1f6b366194de27b9769188e825ef4e68ddd1d36f. Chain 2 (Bitcoin): anchored in block 957055 (2026-07-07T15:12:44Z), 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/DES382221103 — a six-check JSON result.
Piano Concerto in C Major, Hob.XVIII:8: I. Allegro moderato
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c892c2bdcd71568c3640934994574655a23746f2c9fccfce5568d27e090ea0e. 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/DES382221204 — a six-check JSON result.
Piano Concerto in C Major, Hob.XVIII:8: II. Adagio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffcb234c6cacbed2b9c35feff090ba01c4dd750fd009d72b433bc609983aefd4. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DES382221205 — a six-check JSON result.
Piano Concerto in C Major, Hob.XVIII:8: III. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d5ae92a8b018e4eedc8cecaf089ec0d7c6a359dadd9ce79206b8edc9e25d2cd. Chain 2 (Bitcoin): anchored in block 960181 (2026-07-30T00:53:20Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DES382221206 — a six-check JSON result.
Piano Concerto in D Major, Hob.XVIII:2: I. Allegro moderato
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefd2b7f66a0f974fb8262ec919447443fb909e9420e5b2c07889cde4521e1d4f. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DES382221107 — a six-check JSON result.
Piano Concerto in D Major, Hob.XVIII:2: II. Adagio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5066136834c22a3e3f6894683284274525d62c4a0668e1ea71c995a2e8edc0ff. 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/DES382221108 — a six-check JSON result.
Piano Concerto in D Major, Hob.XVIII:2: III. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e2d53b2305b1fe0e898eb3105137ce525d257920309843ee5af4707ff012c9d. 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/DES382221109 — a six-check JSON result.
Piano Concerto in C Major, Hob.XVIII:5: I. Moderato
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x674d9dd6aa2ed8d34628957208fb6980c37d1f851d5d8af1da18e5c18574e4ac. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DES382221110 — a six-check JSON result.
Piano Concerto in C Major, Hob.XVIII:5: II. Andante
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b2f24ad7568d6be40dd4c890f60f5568f14fc72fa0b4410e8aa9f4ff9bdf02a. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DES382221111 — a six-check JSON result.
Piano Concerto in C Major, Hob.XVIII:5: III. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c81a9898c2e0189384c9de8c5482cba6fe2879d2b9cbeb4b856d1edb4f1f40d. 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/DES382221112 — a six-check JSON result.
Concertino in C Major, Hob.XVIII:10: I. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3c8d39e409d64c400195d7746d992e348344a9b8754b1c183d3f86fb2b0e08d. 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/DES382221113 — a six-check JSON result.
Concertino in C Major, Hob.XVIII:10: II. Adagio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56d2854f2c598e099b1fa0578cac5efdbb0ec2bb9b4c78248df98f7fef5ff388. 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/DES382221114 — a six-check JSON result.
Concertino in C Major, Hob.XVIII:10: III. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x885d7a4c2481da7442de0a53899865002cc01aeb24c8304ef7320e08e401ab79. 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/DES382221115 — a six-check JSON result.
Piano Trio in G Major, Hob.XV:25: III. Finale. Rondo all'Ongarese. Presto - Arr. for Piano and String Orchestra by Ettore Prandi
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe93c88b3b711041a9de36d114611e679a10bcfd11e5b6a25f7474732fbc3dcd2. 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/DES382221116 — a six-check JSON result.
Piano Concerto in C Major, Hob.XVIII:1: I. Allegro moderato
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cb632a82d413c385c0b9f78bbf109687aaa4bafde0ecec5605d05d5609cb64f. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DES382221201 — a six-check JSON result.
Piano Concerto in C Major, Hob.XVIII:1: II. Largo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb16552871cb1c4df2a9818015b082007027ae62f9f67d550baee3d35198f65a. 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/DES382221202 — a six-check JSON result.
Piano Concerto in C Major, Hob.XVIII:1: III. Allegro molto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d38941cf9c18b8da3cb594899cecf6f96e5376191a0217d9805a0c40e8c68f1. Chain 2 (Bitcoin): anchored in block 960241 (2026-07-30T09:58:01Z), 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/DES382221203 — a six-check JSON result.
Piano Concerto in F Major, Hob.XVIII:3: I. Allegretto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2f731a32df7f17346032b66e5abbd47119f323f525da8093099821920f9b95f. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DES382221104 — a six-check JSON result.
Piano Concerto in F Major, Hob.XVIII:3: II. Largo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2699e2ebaeba8c159e579a0c34f527fd7001811eb97d88e70869bd052f2b99a8. 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/DES382221105 — a six-check JSON result.
Piano Concerto in F Major, Hob.XVIII:3: III. Presto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e76908bc4eeb998d32aa5d26a817b0cd631c336db37f8e908fad8b627531ece. 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/DES382221106 — a six-check JSON result.
Piano Concerto in D Major, Hob.XVIII:11: I. Vivace
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x424c23c70293004af40330b95ac8bf42de1177d51ba450f7e321dec67d364c63. Chain 2 (Bitcoin): anchored in block 960183 (2026-07-30T01:10:20Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DES382221207 — a six-check JSON result.
Piano Concerto in D Major, Hob.XVIII:11: II. Un poco adagio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75229da52b6ea39d4891f233909d657878613ec57fd3036f374c8a43121e5bf7. 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/DES382221208 — a six-check JSON result.
Piano Concerto in D Major, Hob.XVIII:11: III. Rondo all'Ungarese. Allegro assai
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb8a16b9cb6e0fc9379c42e397a9f25a8a0a5b25b3cf5282cced2f5ad45910ea. Chain 2 (Bitcoin): anchored in block 960384 (2026-07-31T09:54:03Z), 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/DES382221209 — a six-check JSON result.
Double Concerto in F Major, Hob XVIII:6: I. Allegro moderato
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x600b46d1fd043ea9bdf6539d9e286bb2b4c61944dd3d08ee1d8632395bfcefcc. 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/DES382221210 — a six-check JSON result.
Double Concerto in F Major, Hob XVIII:6: II. Largo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04eb384655e1fc3321c3eeade489023c281f5dafa5baf2486640b2705b802fb8. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/DES382221211 — a six-check JSON result.
Double Concerto in F Major, Hob XVIII:6: III. Presto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe85efb82755259d40c01e3090ec93412a07b3a6ddc95243973e30066525c805. 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/DES382221212 — a six-check JSON result.
Beethoven: Violin Concerto, Op. 61 & Violin Romances Nos. 1 & 2
Double Concerto for Violin & Piano in D Minor, MWV O4: I. Allegro
Südwestdeutsches Kammerorchester Pforzheim
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25200a5222e46034c1aff2d4608ae87fc11a3e5b76a49d9b5602bd91b5519705. 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/DEB201719701 — a six-check JSON result.
Double Concerto for Violin & Piano in D Minor, MWV O4: II. Adagio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fe1a62e48ecfacbad255f6674f1ede909498172bab8778f3928a4c567a7fe77. Chain 2 (Bitcoin): anchored in block 960429 (2026-07-31T16:07:24Z), 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/DEB201719702 — a six-check JSON result.
Piano Quintet, Op. 17 / Piano Octet, Op. 6
Józef Nowakowski: Piano Quintet in E-Flat Major, Op. 17: III.Romance. Andante
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x047cb8dad63d7879f4fb3fe8a17301cb943e7a686fc50882c31e268e4dc5f69c. 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/PLC701510503 — a six-check JSON result.
Mozart: Violin Concertos Nos. 1-5 - Adagio in E Major
Ravel: Sämtliche Werke fur Klavier und Violine
GAIA Music Festival 2010: Music of Atterberg, Bruch, Schumann & Weiner (Live)