Tatjana Masurenko (born 21 January 1965) is a German violist of Russian descent. Early life and education Masurenko was born to a Russian family of scientists and jazz musicians. Born in Dushanbe,
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 0x0dce27d5467cffd8f4866125e3364a1c136d5fe33df0021ea0d98726a81f1b6e. Chain 2 (Bitcoin): anchored in block 953630 (2026-06-14T12:06:27Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/319b91f8-40bd-4c65-a6d7-91f48b3511c2.json and https://artists.proofprofile.net/proofs/artist/319b91f8-40bd-4c65-a6d7-91f48b3511c2.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
White Nights: Viola Music from Saint Petersburg
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 0x0238b238b19b72ecc096a998fff2b996ac3368dd9698fd7098a48b0b8465a7be. 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/DEAD62004535.
Just a Motion on the Air (Works for Viola and Piano)
Dvořák: String Quintet No. 3 & Piano Quintet No. 2
Suite for Viola in G Minor, Op. 131d No. 1: I. Molto sostenuto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x934b5108939b798059586a93829fcb7ea508c5cbf92c1245c96f59331d25aca1. 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/DEW741604004.
Dvořák: Dumky & Zypressen: Shostakovich: Piano Trio No. 1 (Live)
Tchaikovsky: String Quartet No. 3 in E-Flat Minor, Op. 30, TH 113 / Shostakovich: Piano Trio No. 2 in E Minor, Op. 67 (Live)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6354b0c9c307798f28000e68b9b850474259f6473d0d2c40e40f845bec4d2fb3. 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/DEX990350707.
Capriccio pour alto seule in C Minor, Op. 55 - Hommage à Paganini
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x349d9a0f90b22ec0bc43f5cd287af6648094e38c5cc350d2daa57478bd6accc3. 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/DEX990350708.
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
Portrait - Works for Viola and Piano or Viola Solo
Benda: Orchesterwerke und Solokonzerte (Musik am Gothaer Hof)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc14a89e86b062f12846aa645972bccfcef3d97d1bb0907bb1ed92005d7486a99. 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/DEB429500402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64198c06903e64efdd32abbfa99dc46dd7e7041ff694f13a73b2862d42c331b7. Chain 2 (Bitcoin): anchored in block 960296 (2026-07-30T19:11:09Z), 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/DEB429500401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cb423e1b8eaf1a19a6bbc47856b1227d133494e8c367062bebe4b201dd6863b. 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/DEB429500403.