Jennifer Frautschi (; born 1973) is an American violinist. A recipient of an Avery Fisher Career Grant, she is currently Artist-in-Residence at Stony Brook University. She plays a 1722 Antonio Stradiv
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 0x6e50f814247636343d0453a79bcdd3d7145025a206473b7adf95688f79089c80. Chain 2 (Bitcoin): anchored in block 953997 (2026-06-16T20:07:57Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2df2b877-c141-429d-8327-4ebd0264dbb7.json and https://artists.proofprofile.net/proofs/artist/2df2b877-c141-429d-8327-4ebd0264dbb7.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Nielsen: Clarinet Concerto & Chamber Music with Clarinet
Clarinet Concerto, Op. 57, FS 129 (Arr. R. Orth for Chamber Ensemble) [Live]
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 0x81147f6505eda9800232e242442f5daa77a887c13a6bdfa862656a38e5c2fb1a. 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/USASX1652701.
Webern, A.: Symphony / 6 Pieces, Op. 6 / Concerto
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3 Songs, Op. 18: Erlosung (from Des Knaben Wunderhorn)
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String Trio, Op. 20: II. Sehr getragen und ausdrucksvoll
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Variations for Piano, Op. 27: III. Ruhig fliessend
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6 Pieces, Op. 6 (revised version): I. Langsam
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6 Pieces, Op. 6 (revised version): VI. Langsam
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb5d048e8a248f65176481544510b55e1c95653371a314ac87f63f071d485e30. 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/HKI190453628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff95fc98a3f841c06b5095e55e70a44529d92ee8d4c6a0f50b4137a446f5c6ab. 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/HKI190453630.
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Concerto for 9 Instruments, Op. 24: II. Sehr rasch
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6 German Dances, D. 820 (arr. A. Webern): I. --
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c5fee953e5b331ec4469b2d30e7d47bf76d0ea9cab25e1ce210827d742fd183. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/HKI190453616.
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
Music@Menlo Live '06: Mozart and Winds, Vol. 4
Stravinsky: Histoire Du Soldat Suite - Renard
Histoire du soldat Suite (The Soldier's Tale Suite): I. The Soldier's March
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Histoire du soldat Suite (The Soldier's Tale Suite): IV. The Royal March, "Pasadoble"
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Histoire du soldat Suite (The Soldier's Tale Suite): V. Little March
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Histoire du soldat Suite (The Soldier's Tale Suite): VIII. Petit / Grand Chorale
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Histoire du soldat Suite (The Soldier's Tale Suite): IX. Triumphal March of the Devil
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Pribaoutki: No. 4. Starets i zayats (The Old Man and the Hare)
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Berceuses du chat (Cat's Cradle Songs): No. 2. Kot na pechi (The Tom-Cat on the Stove)
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Berceuses du chat (Cat's Cradle Songs): No. 4. U kota, kota (O Tom-Cat, Tom-Cat)
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Scherzo a la russe (original Jazz band version, 1944)
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Violin Concerto in E Minor, Op. 64, MWV O 14: III. Allegro molto vivace
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Robert Schumann: Three Sonatas for Violin and Piano
Stravinsky, I.: Duo Concertante / Ravel, M.: Violin Sonata
Prokofiev: Violin Concertos Nos. 1 and 2
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Music@Menlo Live, Haydn Connections, Vol. 1
Stravinsky: 125th Anniversary Album: The Rite of Spring - Violin Concerto
Music@Menlo Live, Haydn Connections, Vol. 4
Music@Menlo Live '06: Mozart and the Twentieth Century, Vol. 5
Music@Menlo Live '06: Returning to Mozart, Vol. 7 (Mozart and the End of Time)
My Barn Having Burned to the Ground, I Can Now See the Moon