Vadim Vasilyevich Borisovsky (; 20 January 1900 – 2 July 1972) was a Soviet-Russian violist. Biography Born in Moscow, Borisovsky entered Moscow Conservatory in 1917 studying the violin with Mikha
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 0x6c5a9a8646e4a74f96af51a8ec48b338271c94e4894e73c740edafab4e0cba8a. Chain 2 (Bitcoin): anchored in block 954062 (2026-06-17T07:39:10Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/46b7dd25-8c4e-45d3-8392-1da0d207e1cc.json and https://artists.proofprofile.net/proofs/artist/46b7dd25-8c4e-45d3-8392-1da0d207e1cc.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
The Gadfly Suite, Op. 97a (arr. V. Borisovsky for viola and piano): XI. Scene
Shostakovich: Viola Sonatas - Viola Suite
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 0xf36f231d1189e8c1274cb85dcc2025462e55f6eac9d1ff7fdfcbb40deeb6a377. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USB8U1072601.
The Gadfly Suite, Op. 97a (arr. V. Borisovsky for viola and piano): IX. Intermezzo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad883382054ca7b0964bd01b04ef1f9d2f887c780ec62ddfccd62fd7ef2cfa60. 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/USB8U1072602.
The Gadfly Suite, Op. 97a (arr. V. Borisovsky for viola and piano): III. People's Holiday
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3118121d1d5de460489f87a4ba1058793b7b4de5c5892337b70760620fb42c38. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USB8U1072603.
The Gadfly Suite, Op. 97a (arr. V. Borisovsky for viola and piano): VIII. Romance
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcaac536d20a9d8c1e9e2035b5af00d54152783e223fbe1ebfe46f7443397b5b5. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USB8U1072604.