Valery Yakovlevich Leontiev (; born 19 March 1949) is a Russian singer, songwriter and actor, whose popularity peaked in the 1980s and 1990s. He was titled a People's Artist of Russia in 1996.Награждё
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 0xf91850264cc946ddd2e76761b0395476f4031f31edfd50f0dfd5f5b73e0f1363. 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/26c925c9-e131-4c0c-9100-6b9e8370dec5.json and https://artists.proofprofile.net/proofs/artist/26c925c9-e131-4c0c-9100-6b9e8370dec5.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 0x50bf068f9ff5eba8784af23e559d63cbcd035a006e1a5e825dc9d30da67c3cc2. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/RUAAX2201819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4af4ce379f0fbb7503e92062441b3d395b2c18035fb8341c97607852a9e7d1cb. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/FR6V82349754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d2198d65b94f2d5dfac3e62b0d12ae77d1f1d7602e5734f5fa289fd0d0b4ea0. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/FR6V82349758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb324b458d93e3c672cb46b1897de15e9134a6d80a2814ef10839dc56a58593b3. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/FR6V82355198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x745f2f7df17bbbd3c6278388e9e6c0bc61d5dca0f41268382f3b7c37bcfec9d5. 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/FR6V82355185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3f13dae10b1660cd0d310e2f611986be7b3fff46f18e4c44de535a0eddebda8. 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/FR6V82355327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc85f34a8b114e01090bce4d0fc8dd82a9d56e6798c90beb1ae131a22eeb77420. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/FR6V82355339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccfb5afb61fc85cc49dfed20d63a3ea0dc8f9ef13d4c380d83abad4dcbc7dbe8. Chain 2 (Bitcoin): anchored in block 958051 (2026-07-14T19:14:42Z), 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/FR6V82355390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe53312dda319f3306e019569ba0b818e47a55ec6c28f620dfe4016d89c167d9. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/FR6V82355308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d41118ac968b1395cf53e12a0c52f7b93a7773bc3bafaade1e6d8f14a11efe0. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/FR6V82355423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ee2a0a0dc9fa0216cbcfafb314d7b4b1c39603a2fa0ae855048f695810dfe1c. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/FR6V82355443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60c99db3356b594f6f785499f4c60efeec531cf6b53e2e1c23f451717b137c0b. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/FR6V82355448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0076d7b591a185b6b6edee1693371974294a093d32e482e41d5919923e5a2bb9. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/FR6V82355284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x751a9ac5e2cbd319b707707a6c68a511cedc3938cd2aa8a7920365a30ccd10b5. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/FR6V82355226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cb31358af194eb581d97671b15ac6f985d43199084653c0d9388f97014bb03f. Chain 2 (Bitcoin): anchored in block 958392 (2026-07-17T09:46:31Z), 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/FR2X41728240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa94cfde54cadacc80ae21da8a53633d3c7d296f626fb28fe6bed89afeddc9bd. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-20T12:15:37Z), 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/FR2X41728242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd7c62a9719f758ee6ba48f8ac1acc4a000f9649ccfafbc77d4655669f4031ca. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/USV291459832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4abb0ad5037bdbfa68d550d947da2a195ffe6cf92f89ce0d49d0f528582314ed. Chain 2 (Bitcoin): anchored in block 960183 (2026-07-30T01:10:20Z), 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/USV291459833.
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 0x48fa848f9df2093e750228df5fd2ef8588162aba46f3810f126a34a6522a2f9a. Chain 2 (Bitcoin): anchored in block 960185 (2026-07-30T01:32:48Z), 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/USV291459838.