thumb|Satu Vänskä, 2018 Satu Vänskä (born 1979) is a Finnish Australian violinist. Early life Vänskä was born to a Finnish family in the Kinki region of Japan, where she took her first violin lessons
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 0x9e3e4bf2058cd85b190a76ec34796a179b4e9d6bd6f83b76f225f4d4b128041c. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ddba034b-6b34-4694-b237-9ce9637d045c.json and https://artists.proofprofile.net/proofs/artist/ddba034b-6b34-4694-b237-9ce9637d045c.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
River (Original Motion Picture Soundtrack)
Violin Concerto in D Major, RV232: II. Largo
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 0xd644f860c32e7075b4b90a7adbe7ea5b5dcf303034e9493ee5640c7fba99cff8. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/AUAB02150177 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x027eab22fd0a51384b281462875c9363329da58d200d85d19d8fcb2ec6c8941e. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/AUAB02150178 — a six-check JSON result.
Violin Partita No. 2 in D Minor, BWV 1004: V. Chaconne (Excerpt) [Arr. Richard Tognetti]
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x440cb5654ee0ccc07f40274253080732e2a8c944f8229959bbdca7a26db37809. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/AUAB02150180 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1479a8aabd81b78e9a0a650654a07d0f0fc14678498a9546c35f40116d732f0. 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/AUAB02150181 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86abd040c24d82165555f40ec668b3406aa261a40c6392adcbf96d2f852f4569. 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/AUAB02150182 — a six-check JSON result.
Voces intimae, Op. 56: II. Vivace (Arr. string orchestra)
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5364fe6af78bdd193dbf52eb638b041401385b1fae1af0a24468712b8d2140a4. 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/AUAB02150184 — a six-check JSON result.
Water (Excerpt) - Live at Sydney Opera House Concert Hall, 2014
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7db21d97e3d478910416ce0ca2b8d986ae2bc756f8d3f4abec6cbf61e817d5b7. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/AUAB02150186 — a six-check JSON result.
Concerto Grosso in G Minor, Op. 3 No. 2, RV 578: I. Adagio e spicato - Allegro
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76e6243ad1ac5a37273e81d5917d7f6c0957fdf27f1249d05265c343d6200595. Chain 2 (Bitcoin): anchored in block 960199 (2026-07-30T02:30:29Z), 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/AUAB02150189 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x696e8b9e9d99d615560040966f8624bafa165edb743eb7679e93babe07115f4a. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/AUAB02150191 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9384746307fca86aaf1f08782f7005aa41ff9f5ad56773daeb7cc371e1359599. Chain 2 (Bitcoin): anchored in block 960185 (2026-07-30T01:32:48Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/AUAB02150192 — a six-check JSON result.
String Quartet in F Major, M. 35: II. Assez vif - Très rythmé (Excerpt) [Arr. Richard Tognetti]
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x117e2ef776aa02fcb2068a937a5b9f1718158aac35d7f94fa6f7ebb7818db45b. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/AUAB02150194 — a six-check JSON result.
Symphony No. 4 in G Major: III. Ruhevoll (Poco adagio) [Excerpt]
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The Four Seasons, Concerto in E Major, Op. 8 No. 1, RV 269 "Spring": I. Allegro
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The Four Seasons, Concerto in E Major, Op. 8 No. 1, RV 269 "Spring": II. Largo
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The Four Seasons, Concerto in E Major, Op. 8 No. 1, RV 269 "Spring": III. Danza pastorale. Allegro
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The Four Seasons, Concerto in G Minor, Op. 8 No. 2, RV 315 "Summer": I. Allegro non moto
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The Four Seasons, Concerto in G Minor, Op. 8 No. 2, RV 315 "Summer": II. Adagio - Presto
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The Four Seasons, Concerto in G Minor, Op. 8 No. 2, RV 315 "Summer": III. Presto
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The Four Seasons, Concerto in F Major, Op. 8 No. 3, RV 293 "Autumn": I. Allegro
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The Four Seasons, Concerto in F Major, Op. 8 No. 3, RV 293 "Autumn": II. Adagio molto
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The Four Seasons, Concerto in F Major, Op. 8 No. 3, RV 293 "Autumn": III. Allegro
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The Four Seasons, Concerto in F Minor, Op. 8 No. 4, RV 297 "Winter": I. Allegro non molto
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The Four Seasons, Concerto in F Minor, Op. 8 No. 4, RV 297 "Winter": II. Largo
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The Four Seasons, Concerto in F Minor, Op. 8 No. 4, RV 297 "Winter": III. Allegro
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Violin Concerto in D Major, RV 226: II. Largo
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Concerto for 4 Violins & Cello in B Minor, Op. 3 No. 10, RV 580: I. Allegro
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Concerto for 4 Violins & Cello in B Minor, Op. 3 No. 10, RV 580: II. Largo
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Concerto for 4 Violins & Cello in B Minor, Op. 3 No. 10, RV 580: III. Allegro
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Violin Concerto in A Minor, Op. 3 No. 6, RV 356: I. Allegro
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Violin Concerto in A Minor, Op. 3 No. 6, RV 356: II. Largo
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Violin Concerto in A Minor, Op. 3 No. 6, RV 356: III. Presto
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Concerto grosso in D Major, RV 562 "Per la solennità di San Lorenzo": II. Grave
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La verità in cimento, RV 739, Sinfonia: I. Allegro
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La verità in cimento, RV 739, Sinfonia: II. Andante
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Sibelius, J.: Sibelius Edition, Vol. 2 - Chamber Music I