Vladimir Alexandrovich Nechaev (; 28 July 1908 — 11 April 1969) was a Soviet singer, a lyric tenor. A holder of the title of Meritorious Artist of the RSFSR since 1959. A soloist of the USSR All-State
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 0x6dc91315e2f943387930c88d4303e75b485e7ac99e188f69645a4fd2082d8173. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/60acaba1-3b32-48dc-9fbe-5535e728c6ce.json and https://artists.proofprofile.net/proofs/artist/60acaba1-3b32-48dc-9fbe-5535e728c6ce.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Velikie ispolniteli Rossii XX veka: Vladimir Nechaev
Russian Legends - Vladimir Nechaev, Vol. 2
Russian Legends - Vladimir Nechaev, Volume 1
Russian Light Songs, Vol. 4: Recordings 1930 - 1960
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 0x8f787571d3a092815d65fb89a175ec27274dca89c490d5fa5ebe72fbb56cae93. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/GRHR11078708.
Эстрадно-симфонический оркестр Центрального телевидения и Всесоюзного радио
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26050065a59fd2caf2d6ee674cf4fc46a5ac75f5047c92f336ac9166b5d94570. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/UK2Y21308012.
Ансамбль советской песни Всесоюзного радио
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff1a3a1d49f5e1880c113010431b38d367a96c4fa264332cf7e6e582fb7dc891. Chain 2 (Bitcoin): anchored in block 960509 (2026-08-01T04:30:37Z), 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/UK2Y21308015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x632484f287a95f89e852e41875326630912e9afbddc0845004657867c5c55398. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/FR96X1510726.
Ансамбль песни Всесоюзного радио и Центрального телевидения
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dcb93c48e0582328ee89e57e19eaf22ae40e26f7a6f6d9e8117438efd85b539. Chain 2 (Bitcoin): anchored in block 960489 (2026-08-01T00:40:43Z), 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/UK2Y21500944.
Dance Symphony Orchestra of All-Union National Radio Service and Central Television Networks
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3c63a524020a61180f741b047192bb34e450c8bc83350ab773bdd6013b19233. Chain 2 (Bitcoin): anchored in block 960222 (2026-07-30T07:48:45Z), 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/UK2Y21500945.