Vera Nikolayevna Polozkova (; born 5 March 1986) is a Russian poet, actress, and singer. Early life Polozkova was born in Moscow, Russian SFSR, Soviet Union. Her great-grandfather was opera singer
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 0x606566b227fe3e3201b9a23bd99d91e31b7f3309bb1650f8716427c970c8c053. 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/c2804654-489e-44f1-a37b-a59d76284b44.json and https://artists.proofprofile.net/proofs/artist/c2804654-489e-44f1-a37b-a59d76284b44.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 0x22346fcfc9afa5a883156f7e32d8082aeb75ec30873c6930999155a764af03a7. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:43:30Z), 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/FR10S2149843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b26cb5a3139fa3a3c862ba47b752ca5b9bfa86b82087fce1fcd4e183f4213ba. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/RUB311202304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0666e9023e4cb2e5330d94cb3b39b0a052fa337318507ae51fecc8160f54e786. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T04:30:31Z), 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/RUB311202406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2064c19e4f9399823f888a8a5ca5e7112c167bbb6800b5121d0eeeaaf87388b. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T17:32:33Z), 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/RUB311202306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba9c6aaba36abd7187bc2ce8cdad338096e3d6298fcb2dd43521844c7fc5be78. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T15:31:18Z), 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/RUB311202310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8d0e5adf27bb340362b7c3d27f12af674c66438d6bc31cefa2104a03a3066fc. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:25:35Z), 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/RUB311202311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd4c16f72a4b957a562c769e8daf48b49de86ed16da31ec18815fdc986feb0b7. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/RUB311202313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa647c308e1d4ec888085f1cb5cf4a24ecf553f27bab98857fafffb89c9a481a3. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/FRX762070365.