Igor Yuryevich Nikolayev (; born 17 January 1960) is a Russian composer, singer and songwriter. Biography Nikolayev was born in Kholmsk, Sakhalin Oblast, into the family of Sakhalin-marinist poet Yur
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 0x03cd23c0c4488b744e21bc07cafb4565b0c44206e31442218050202bdc8b74c3. 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/a40b02bd-db83-4318-9556-4091300f9624.json and https://artists.proofprofile.net/proofs/artist/a40b02bd-db83-4318-9556-4091300f9624.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 0xdcfbb50ad6f288093337912b19baabaccc10cd64ba8aeb1ebe3e9b9c5e1bccb4. Chain 2 (Bitcoin): anchored in block 958567 (2026-07-18T15:22:40Z), 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/RUA640900708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x114ba1d9185b72b6389265ea575e76700f3b80841f0644f1f50b4e7f861f20e4. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/RUA640900746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c3f121029803aca91c505489a253472ee4e3cf1fc99fec8f1f5a8d0e0c333db. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T13:51:33Z), 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/RUA640900747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ee5cf11cad3169f6231346b1068343c9cddeffbee4f3f544c32f947710ce68d. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/RUA640900749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ecf82d6efc44866fa2c0aa4e30705576ec1a7f0805b7edbfc47323e01749acd. Chain 2 (Bitcoin): anchored in block 958775 (2026-07-19T20:13:58Z), 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/RUA640900761.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2de72f9911a8d9fb6de2c157b48e76e833a82ab10d145e4494b95786b1753eb8. 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/RUA640900768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd26b077d8a37ff78f2a88ae37652439f7cba6babc9eb7933d014310eb0221cd. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/RUA640900783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28b53cc73317ee547defadaa9f47a430fb2492b75b9f8313fd9aafcb3a6be4aa. Chain 2 (Bitcoin): anchored in block 958965 (2026-07-21T04:29:05Z), 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/RUA640900784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa02fd7b3e8cc9dd74b3488e98da7aec4bc4c527aa1449fde5e212296c89864e6. 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/RUA7C1801013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6630573c100ea2e67298f84a59232d5265fd1a000116f0b2ad0611b5788d71a0. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/RUA640903209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaff736b5560104324b6dc72dc99bc28a0ce69036be0a2c1e59101decb6f3219. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T16:29:05Z), 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/RUA7C1908926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7719720f5f54f560ebca0b43032937e7e300881b4ee4b3a252cdd10df54bb6fa. 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/RUA7C1909636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaff736b5560104324b6dc72dc99bc28a0ce69036be0a2c1e59101decb6f3219. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/RUA7C1908926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73edc818345ad1ed0b13be1ad3d6751464b2a1786b90da739848c02e55c38003. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/RUA7C1803959.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e17f7ff43a79302502ea7c8b2b88ffea0ba351ba76a92fa10c5d763abada3c1. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/RUA7C1804085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc9bd8d98fc4088fd95c4f08e229034145d09605deec1149e5d5cf7a0c68f756. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/RUA7C1804081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73049a91d1d24f8b901b6ec496b52ced712a305d5686eb827a47aa7289293b74. Chain 2 (Bitcoin): anchored in block 958617 (2026-07-18T22:07:13Z), 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/RUA7C1804074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31ca7805aef85cea1dbc50ba0fba938194c0e38269b9d9c36efccafdcfc9db4f. 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/RUA7C1804029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea935bf4a43511bb62ac36dd2296b94519935c020de85f8bbda081ee021ccfe8. 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/RUA7C1804041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66c15adcecb82d601b3cd6992be81a55d2e2fbb1d543ec3acc4f881675703d95. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/RUA7C1804054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x550ff45c4781d9e2f26f87e9b7e0420165f9660e158c26771ac4561f969f76ee. Chain 2 (Bitcoin): anchored in block 956620 (2026-07-04T07:11:13Z), 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/RUA7C1805417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27c3611b37710600bb7e0f1967b3b78c59212a68652c6342fbecdbc7dccb56dd. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/RUA7C1914132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae969e5ea44a84e3065f8845f4de268c3ce9f1ba1aa39533c8495fa846f77f65. 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/RUA7C1922109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12558d0b830188f7e75dff562cfd788a8a5c44e338b98d7fd1c2076033987c47. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/RUA7C1922937.