Sheyko (Ukrainian Sheyko) is also sometimes spelled Sheiko is a Ukrainian surname.It does not change according to the gender of the bearer. Notable people Evgeny Sheyko (born 1962), Russian conducto
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 0xa393d4ee6f1de1f436e862957ccef943ed43c5844997a9ff94cbd5ffd37cce6e. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/15aa1ee8-6890-4029-b833-f09090b1bf52.json and https://artists.proofprofile.net/proofs/artist/15aa1ee8-6890-4029-b833-f09090b1bf52.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 0x33a2e206afbf0443e05dabf211346f30cb808488489250088a3358d86ad68249. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/QZES92165695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6c821dbba049b0c6acbb4a179eb9bc64329cbaa21eb13c9a694fdae2fd9bb8a. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T04:54:01Z), 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/QZK6H2107046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26ef4de6822212c1f3fd999b030d67632076f4344ee2fcb3a33bcc3c0dc396e7. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/QZHN42224801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57b6a26a151e05cb48df9db932f24549a22ab8b9e15b252cba54522b009ea209. Chain 2 (Bitcoin): anchored in block 958508 (2026-07-18T06:27:01Z), 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/QZHN82217739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5de1c0e3bb1a358c384604bbfa2aac07c065ab8cb939594281710017843f9059. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T17:59:59Z), 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/QZMEQ2249141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x805dd302780b28a9585e74ba5ccec450ac5671d6c29a91c909cc3320b3b351c2. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZMEQ2249297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9327af7674916d8e18cb6a855991423a1d433dd25c9253dc40f6d4621352b8b. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/FRE5R2010012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x205294557d47e2f7ced35230d35332e5f30cf6ea75c891b2bccd0d114d8949ce. 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/FRE5R2010014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d7654e9ff70a96c4e2a83c81219ccf10c5daae36cf6ee1fdf53486f3f473119. Chain 2 (Bitcoin): anchored in block 958415 (2026-07-17T12:50:13Z), 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/FRE5R2010015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47a1a3259eb29ce962acde1ac5584c4437f9ef2d17b859d87ee85e8fd25ac1b6. Chain 2 (Bitcoin): anchored in block 958504 (2026-07-18T05:41:32Z), 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/FRE5R2010016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16aa6a19f6b71c43a3a258a63f416dc339cce12d332f92214bf6b52f3d311769. 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/FRE5R2010017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf802c8905d50d180958ac37a10661c7b6d1fcf4041f41df12f7e99b8621a2bad. 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/FRE5R2010020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41d73a3aec518cdb6a11f515aa3dcbfada2eef41190f10cf51a8b0f88c93a938. 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/FRE5R2010021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb25ea20a6bdf7b2bfe9a6a23159da5d125be32fa9fcc39bafcc087ad805a343a. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/QZK6G2308487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9513581d22c7579f75d204fdbd0e8b8281cd25300151298389f55411e044d0b6. 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/FRE5R2010022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef4f31f148d08fcbd84fa4cf89b5687edcbe2ada6350fcdcf01f5c4a86f2dd14. 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/FRE5R2010023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74038ba9d93f256964a7cf07d07aa971265f5a5248b9cb301a03b5627f8126c1. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/FRE5R2010024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x269c58c4d8f016c6acfc74ccadb525ec644c29f981f2996b355aeff60eea8c87. Chain 2 (Bitcoin): anchored in block 958819 (2026-07-20T06:54:56Z), 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/FRE5R2010025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddf1d5c1f33f381e82f6f003828a743f510bfa1edf2efb0fe652c35b202f3fad. Chain 2 (Bitcoin): anchored in block 958611 (2026-07-18T21:24:44Z), 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/FRE5R2010026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x441f6787dec0b95b23e249badd42ef0b688864571c8f3c4b700192454f823ce8. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/FRE5R2010027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf98f30368b00680b50ebd39e75f47f2d59fc9cbafa9c93b995aa91f9c1da171. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/FRE5R2010028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8034e72b2d760d8c93b37bf2b5dac25ba0b854734a3543b27089ec4422bc787b. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/QZTBB2442760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8122667ddb0a9d16e56fd58d57627eb4ebbe7843e6ff4784446a28494bab676c. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/QZTBB2442761.