Viktoria Yuryevna (Vika) Tsyganova (; born October 28, 1963, Khabarovsk, USSR) is a Soviet and Russian singer, composer, theater Actor. Honored Artist of the Republic of Tyva (1999), Honored Cultural
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 0xee07f56ecb489d04660f76608a764dc163a530cfb416be5bc26a592ad1588808. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/856b1e4d-69c4-46a6-bbde-7d907ceca568.json and https://artists.proofprofile.net/proofs/artist/856b1e4d-69c4-46a6-bbde-7d907ceca568.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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 0xddc8d2edc8453dc1c5ac3cc791d6e8205743db6498c5e38213d9d87b2d7a72a3. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/FR6V81713626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd52d036e735fc6248639a51630ba929ef9a73243b6aa6cac821d564a911b3d9. Chain 2 (Bitcoin): anchored in block 958322 (2026-07-16T23:18:20Z), 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/FR6V81714714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ea99eceac862e4017ac773ddb2f3f719d3c615576fc158ed16744f885647879. Chain 2 (Bitcoin): anchored in block 958095 (2026-07-15T04:30:08Z), 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/FR6V81714719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dc94b5464c57d3d399f7c51e7d8b17aa6b30a8a11fb024425e70333a8e77d22. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:55:58Z), 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/FR6V81714720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24682dda055de05875d9fcec038a0d2b107d84a6537db614c0028fdcee349751. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/RUB731518534.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x811660d8eedd0c0c89e73c0c8ddf98b4fe53644daa1ae869ee0fab0a5a1a4b8c. Chain 2 (Bitcoin): anchored in block 958476 (2026-07-18T01:26:56Z), 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/FR6V81572769.
30 лет на сцене (Live at Crocus City Hall, Moscow, 2018)