Reznikov () is a Slavic and Jewish masculine surname. Its feminine counterpart is Reznikova. Notable people with the surname include: Hanon Reznikov (1950–2008), American actor and writer Nikol Rez
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 0x120a8912b72cc654e70fdc4bf58664a157c36fb7028a8325ce2da67db446f022. 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/8e15f141-38e3-4ce7-abf7-8299191f35eb.json and https://artists.proofprofile.net/proofs/artist/8e15f141-38e3-4ce7-abf7-8299191f35eb.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 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 0xdb3fa87dcf1d5d377f397fd11a1963e04ccd3f881e2ac98ac7cd3847170d9ce7. Chain 2 (Bitcoin): anchored in block 958322 (2026-07-16T20:44:14Z), 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/RUA592000058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54b414b2960640660c3d30bc1bfe00a8b2e6ee5f47785aae6433750119f4240d. Chain 2 (Bitcoin): anchored in block 958653 (2026-07-19T03:54:23Z), 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/BXHBP1900562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe875505167945220a1a507046d74480fa6cb3ab1fdb196897e470149ad912cd6. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/QZ5FN2163553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ff995397845dab7c22270b01134a382cbff534673bd09f01361102c5c5771fd. 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/USLZJ2185468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17164c9baf4b1d2a3ac036e50b222384cef9572c04f91375ee778c3ea3781501. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/FRX202381080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34fa8989e6a7b9c9532fa8f9ce287da08f624fdd7e93a7c1f771863d176575c5. Chain 2 (Bitcoin): anchored in block 958733 (2026-07-19T12:51:21Z), 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/FRX282362029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc50e0bf8d8ff45af9052eeaa1171a7b78915b6a1b5f7bc7fed0247de51f74e3e. Chain 2 (Bitcoin): anchored in block 956777 (2026-07-05T11:01:08Z), 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/RUAH62430856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x243807032a67ca9dd85f905edc39f599e0db7ce8a2e4d43ceb532031e927adf6. 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/RUA1D2516126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x371164bc7bdbb797954a1495fd2787c6f9563176b007fbc0eeb81650cbe4b800. 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/RUA1D2528640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x820422c819b9afe0db2768801a8394056db68311c541dc5cdb2cb5f272254e61. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/RUA1D2533274.
Finest Hour (feat. Abir) - Denis First & Reznikov Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7087cdd825c0bf7b9ca6ca7e4a527522969f56fa91334ffdc5f7f4c45748587a. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/USAT21802758.
Hands Up (feat. DNCE) - Denis First & Reznikov Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43e374d1800bd92021fec5980a5ab42d915b60795d2c066148d9513cb3b15a4c. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/ITUM71800797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf14ab443a8985aec1bc23f2934e477c08ba4408b523c4388780eb34629d91229. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/GBRKQ2104950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7780fea4c4f34786418ed2262c796b64b007ca90769df6a8e1fe5627b01f3735. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/RUAGT2437208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe875505167945220a1a507046d74480fa6cb3ab1fdb196897e470149ad912cd6. Chain 2 (Bitcoin): anchored in block 960277 (2026-07-30T16:10:47Z), 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/QZ5FN2163553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc79d61898f8762140d06028d6ddf2cb61d62c4dda38f37b10debfee969a19ff0. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/USLZJ2121918.