Dmitry Evgenyevich Sinkovsky () (born 1980, Moscow) is a Russian virtuoso violinist, concertmaster, countertenor and conductor. Sinkovsky started playing violin at age 5. He has been a prizewinner in
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 0xb8d65e4fae97df88281d7904f0ca8e90224b383159e2a8b8a68376d69be2ab27. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5e03c868-6e76-4af8-8f97-414d97e2f365.json and https://artists.proofprofile.net/proofs/artist/5e03c868-6e76-4af8-8f97-414d97e2f365.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
The Four Seasons, Violin Concerto No. 4 in F Minor, RV 297 "Winter": 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 0x13a4677dacf6807aadb7fb9394cb7c67db1837fd0e0a71c6d480c5d41ac52fdb. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/FRZ131402160.
Music for the Royal Fireworks, HWV 351: IV. La Réjouissance
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8acdf439bf48f3d3e70008845179f2f15fae51968ee77e924a0a8ca1072b92b. Chain 2 (Bitcoin): anchored in block 960427 (2026-07-31T15:59:18Z), 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/NLE422301326.
Concerto Grosso in B Minor, Op. 6 No. 12, HWV 330: III. Aria. Larghetto e piano
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa54c35a91a7783c2fbc6b7e91a88eca16b5bb4a0f8493f6845d40343c6f0c342. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLE422001130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fb72a8a63a57f1e9ade445ecda1017d12304da28a10a4ec57e2a983f47b2301. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLE422105533.
I Will Magnify Thee, HWV 250b: I. I Will Magnify Thee
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2059d38c1ce82c55152767774952e9c06f6ce8cf82185f1e1a234cb825f40b05. Chain 2 (Bitcoin): anchored in block 960435 (2026-07-31T16:33:26Z), 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/NLE421701117.
Vivaldi: Concerti per due violini e archi I
Violin Concerto in A Minor, RV 523: I. Allegro molto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33229cfda0f7c039cb33ca318764a02bd6f4b4036fdb3e673b223f863f000b79. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRZ131321010.
Violin Concerto in A Minor, RV 523: II. Largo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63763c0a8a4bf91882ed2a0448581c37d6f3bee7a3bc4432e52a871640949ebe. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/FRZ131321020.
Violin Concerto in A Minor, RV 523: III. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb789250c209521a4546182a2d7e6011060583013d1f43b940d5144b970d6740f. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/FRZ131321030.
Violin Concerto in C Minor, RV 510: I. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaff048e2487e9a01a7a1f6208c3d5fb4faea785ab882c4fd84d02584bed97246. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/FRZ131321040.
Violin Concerto in C Minor, RV 510: II. Largo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f76510491b4fd9605b5c30e843d8d1f5ca543c90031f598e38983cbed1784d9. Chain 2 (Bitcoin): anchored in block 960111 (2026-07-29T13:21:01Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRZ131321050.
Violin Concerto in C Minor, RV 510: III. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x942816d3d478a76bb63b61222b05f0a8189e2d0c82c6340d9349255940e8d2e2. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/FRZ131321060.
Concerto in C Minor, RV 509: I. Allegro ma poco e cantabile
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6e195052beaeb3a623a3e493a901714d31913c1f7c3bd6533978f6d1a2c825e. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/FRZ131321070.
Concerto in C Minor, RV 509: II. Andante molto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1dd3bfb9303a7242c975ddc5e86ef39682abf296ae0cec730852d1a00d95c25. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRZ131321080.
Concerto in C Minor, RV 509: III. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ba694b5cfbad5207d0ebdb2589f5d2028adb4e42e179b41bdced4c800862280. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRZ131321090.
Violin Concerto in G Minor, RV 517: I. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03dbba4245cff78241d9534504ff81eaa3038b7a2b62d00a1ffdac910bcc6b96. 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/FRZ131321100.
Violin Concerto in G Minor, RV 517: II. Andante
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab04796030bdd8eefbc1f7381fd9386ad1af58051f7a82a19f5f4cade7624c32. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/FRZ131321110.
Violin Concerto in G Minor, RV 517: III. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe855e3176f7f29352b590ec2b285b2f230994c9e020909167d8c4bd9b2dcfad9. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/FRZ131321120.
Violin Concerto in E-Flat Major, RV 515: I. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8c2854fb3c642da93b89fcb6194b23e46eb19d528f76854d46eb65e056316d4. Chain 2 (Bitcoin): anchored in block 957011 (2026-07-07T08:25:35Z), 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/FRZ131321130.
Violin Concerto in E-Flat Major, RV 515: II. Largo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e51119a2b94b1d24da8eb7896aa0b51de314e6521999fc02a79b96c5614d212. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRZ131321140.
Violin Concerto in E-Flat Major, RV 515: III. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02945af9561b334342bbf41a58afa5ec4a9a8a6bf0fccb7cddc20d6d2c69e1b5. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/FRZ131321150.
Violin Concerto in C Major, RV 508: I. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fa02e417b68f8bacb4f2e9056a07d83fcf5436d0ceea51864c93d969ca26bc0. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/FRZ131321160.
Violin Concerto in C Major, RV 508: II. Largo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdedf3e14e2ddaae42491c148277da283a7a931a561b069b243809678a3bd16fb. Chain 2 (Bitcoin): anchored in block 960247 (2026-07-30T10:42:33Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRZ131321170.
Violin Concerto in C Major, RV 508: III. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfef83181695a8705bbc4b190b291fce7fd5b65d2bd299866d6f5689a3500c566. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRZ131321180.
Sinfonie et gagliarde, Libro 1: Sinfonia 11 "in Eco"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72ea2cc1085726d95d4662ffb303b76a78ebbebb415eaf62123086882c424cab. 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/DEE472000034.
Sonate concertate in stil moderno, libro I: Sonata No. 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd17acc5e11aa3ca8532f1d43ae51063a60f272a67a71f31eaa5926f47d9c367. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEE472000035.
Canzoni overo sonate concertate per chiesa e camera, Op. 12, No. 20: Ciaconna
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fe13eceb76820780bf077468e3339a369c799526faf91c0f25803912a97156a. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEE472000037.
Partite sopra diverse sonate: Passa Galli
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcca87fe91b619eafe22f708aa06e3dc7890e6ec3ff1fcd3c20e417fa44bf5154. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/DEE472000038.