Kazaky is a Ukrainian synthpop dance boyband, made up of Kyryll Fedorenko, Artur Gaspar and Artemiy Lazarev. Assembled in Kyiv in 2010 by former original member Zhezhel, a choreographer, the group has
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 0xada2730eb31189da8c0198e9d0ebdb28be19f98c9f76b26558fb85ff9440f5b1. 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/c1106121-851f-4b09-8401-935d1f3405b9.json and https://artists.proofprofile.net/proofs/artist/c1106121-851f-4b09-8401-935d1f3405b9.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 0xf8ea85df14be642414b33e7b62369c2fdb977c6d677959d72b74082832a1b2ee. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/TCAHL2376168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x226a7a26f8f7cceb59fbf453132b0f513215cb47f38261e03acb37580a9bc6b0. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:51:48Z), 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/TCAHL2376391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ad2808119860f10f9476c2be1d62113214339caad84300de1c9b79114937867. 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/TCAHL2376431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cf49d111e8a937d2697067445a38f612fac6a34d3e9921680cfc3f3f1d51970. 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/TCAHL2376572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bd1e8bfcb88798e1647a752d1883740ec0966472d14df4f0ff688a26e4dd122. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/TCAHM2368072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77a05a164024ae71eb23d01eaa680529dca1f50cfa6e79fbebcaa07995787f19. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:33:04Z), 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/TCAHM2368089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdba635d07b238dcbe48bb238f513f65abcc691283335cb3062bfb722504e1c7e. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/TCAHM2377123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75ab936ede1ff378d90c24bc2ef606ec707bf97a3c931af85acd2f593112515e. Chain 2 (Bitcoin): anchored in block 958514 (2026-07-18T06:54:37Z), 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/TCAHM2377192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4de1e07ad277d7d39bdbc9cd69f9334811981591b30bb334c4de41db2ba2dfc. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T22:17:59Z), 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/TCACJ1595117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4de1e07ad277d7d39bdbc9cd69f9334811981591b30bb334c4de41db2ba2dfc. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T06:58:21Z), 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/TCACJ1595117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x971a4b42c7e63b2b410a6221bbba68c26536ed9368d4a45970761ec0cc52ebce. 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/TCADE1769013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ff10818ab32dfcd4522e88c752e9a571369b5d3179317649efeaf7a2af91126. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:23:33Z), 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/TCADE1769019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x360da85f5dc1bfe21cd1d097ee6a8440713cad0f833fbe027756e327e8fa49a5. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:39:25Z), 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/TCADE1769023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2397654ea1b0e5e40f65701b43d146464ba4c4cb026d7d701446312f7212af9. 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/TCADE1769026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3f7ffd3787b5be205d109c5cab16411be514b316e3add12b34ba3b7cba2175b. 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/TCADE1769035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb06d7180842d5fef3ab2b7df3024b09be89eee69c019b984caa4eb13575d9a4f. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T15:22:58Z), 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/TCADE1769040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8f778054badc6374a25e4d6713272d01240a0a0bf41fd83770ccb6e843726d9. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T19:05:57Z), 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/TCADE1769043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x005bf2dcff5dfe9ac2e58d468147f9c5c02ba18560cdc177912395598d8bd19c. 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/TCADE1769156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e12578002947bb089ee1bc9927a7f266202679c0f13bd6005f6663d7f29c3c8. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/TCADE1769162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe048ed081e3c1ac8e59bfef8680393f67803bdff3a9d844c3188a8e20c760337. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/TCAEM1915429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe048ed081e3c1ac8e59bfef8680393f67803bdff3a9d844c3188a8e20c760337. 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/TCAEM1915429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x681d34ce8da4570b7356d6a74f6f458424a9ed20f79eb1a7a6fa834ffd051d10. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/TCAEO1940347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x681d34ce8da4570b7356d6a74f6f458424a9ed20f79eb1a7a6fa834ffd051d10. 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/TCAEO1940347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea82c46609439f00d711d038940dafc52fcb49246e37d05a7d27e889b7bcb589. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/TCAEX2069990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea82c46609439f00d711d038940dafc52fcb49246e37d05a7d27e889b7bcb589. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/TCAEX2069990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01e008fdf1ed45070d8a48e31309ab6dd231ebb566d8ca7d5e35f5430051c057. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/TCAJU2554701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2eb2baa77e2f493cf2c7575c9bddfcb2b0bae6476fbc29c0ffa5ea7f07b1d2f2. 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/TCAJU2554928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ad53085239f2164698ee6e6926bbe715e2f8131c62dea57f250faf6e5305fa9. 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/TCAJV2554946.
Touch Me (M4lta & Mateus Medeiros Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6373a7068c87b8a5aa89a9b020357f998ca6a93498fb07be994b7148b49e4d98. 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/TCAJU2555000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c487acba21423c1422258b42b07523269ea27dc29adca238957796e743abe64. 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/TCAJV2555074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29838246fd6cdf2d525b87433dbe271c84b6fd0be3b906ed24857bf50badf0bf. Chain 2 (Bitcoin): anchored in block 958526 (2026-07-18T09:09:53Z), 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/TCAJV2555129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x925f2b277d00c0c3e673485dbfad0634c7138259f56ebaae249b0f9412079a85. 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/TCAJU2555149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85cf5c380f627b103a7c39006018eb610ff7d826ed7657f7ca0192cc803a42bf. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/TCAJV2555183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9fbc9cb3312f359a27793016a08619a481b15e2eaad50c5445cdc270731c92a. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T10:28:28Z), 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/TCAJU2555224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf33735ee251ce83139880410561e5da72fdfd0be17d37a644c65943c11eac173. 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/TCAJU2555255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c04063583492c952cd8f95cd571a713b7943e735e8adfa84c2dd642abdab7ff. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T21:08:39Z), 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/TCAJU2555310.
What You Gonna Do (Harland Kasten Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61d86625cc5b679196de5c6f614f48f8b97eebe5feeff9ae4c40a3e2ed0a9f33. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T12:01:09Z), 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/TCAJU2555347.