Cynhn (stylized in all caps as CYNHN (СУИНИ, スウィーニー)) is a Japanese idol girl group formed in 2017. They released their debut single, "Finalegend", on November 1, 2017. History Cynhn debuted in Novem
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 0x32e6319434fc0a10c667dea7e81d83a28fddb662af511fdc73bf735c6277ebd2. 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/55072c3a-1625-4835-8e93-d52cf43cb2fa.json and https://artists.proofprofile.net/proofs/artist/55072c3a-1625-4835-8e93-d52cf43cb2fa.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 0x4111cc789b411b98854b870db425f1a6aad9a871f17b6e4d2640d1955a4703fa. 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/JPTE01904000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x852540d9bc9faccc8ee37c5bece2aa41afe6a036010d905cef64c1bedf939839. 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/JPTE01801650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bf840fe11943f555f63b7acdd9b7ad7327e28db524ad2cc81307f37f5638629. Chain 2 (Bitcoin): anchored in block 958788 (2026-07-19T22:07:06Z), 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/JPTE01807450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57a77f10c06f062ee9b473fff22791817627f7d65567b4facb00efb939e5e012. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/JPTE01901170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ce072be560e1261db539cf0484840e9c96b030ebf985ed1146ed0d1551b6ae1. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T23:50:17Z), 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/JPTE01901160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffaa41599a843805951836b6591697bee4749d926d110bb11df9561ba7487231. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/JPTE01904010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd1b5382f68157376bbb0c90e73f7b4df1f635a9d1c2d3c89bc73643ec332812. 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/JPTE01907780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9c63b726447cbd80e9d1996594cfd27f63a0ee5a4f3007c712ad927d1edb892. 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/JPTE01907790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0a4a2a6661111e1df8039e3737310f6c479807d31f457da1484d3d0cbcee949. 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/JPTE02004680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf09daaceb82d8be79f11bbb6a4f256b28920eaeca6d4850b947c0de18a18ce2. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/JPTE02007340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x826cd3b6ade48c401b6046d7429e28db340f783eab614f4c110567db4ce0c447. 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/JPTE02007330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05f5144f3faf6e2baa4628a7c1f84b202e7775b789ca5722ddd6eb9f9d34e2b1. 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/JPTE02007350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dfd333f7350d7f1a13bc7dc406b9fe0407695480a3765c6f53b4363bc6dd703. 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/JPTE02101780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a7dc566355a820b36f588f3b9219d8835cadb996d1f46d5f163c45d74c2e16c. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:54:01Z), 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/JPTE02106600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7d8a4b013d5150e8d24d0a4d7cf6eaceb4e76b4368bb53727cf18cf7241930f. 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/JPTE02106610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x852e44d3d4349660a7ab23ff2ed7d96b0b5a801ca6a2c532b1554ca024fb9b96. 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/JPTE02106620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6503b7a2e5eaceb3c4537b67ed7a8502126c50a953ae8715cdf183f20c4a398. Chain 2 (Bitcoin): anchored in block 958622 (2026-07-18T22:58:55Z), 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/JPTE02106660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fc142e2b36c0dfa49e97b067006dee9de6b4575648f62e4d8d8d4e916b09c15. Chain 2 (Bitcoin): anchored in block 958116 (2026-07-15T10:19:10Z), 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/JPTE02106700.
水生 -CYNHN「LIVE TOUR 2021 -AOAWASE」- (From Osaka)-
2時のパレード -CYNHN「LIVE TOUR 2021 -AOAWASE」- (From Osaka)-
はりぼて -CYNHN「LIVE TOUR 2021 -AOAWASE」- (From Nagoya)-
AOAWASE -CYNHN「LIVE TOUR 2021 -AOAWASE」- (From Osaka)-
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7afe0f9cd88f1e7b4ee4805c4fd17df1481d5d139c05cec4a37234fd18b51eca. 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/JPTE02204220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cbdea25c9e749c059758fb47d0549277007e97892c87c41f2a2cbe46443f074. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/JPTE02207920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2960b912587eb5a22cb11cd222435d999093c2f0b0acc6b0721f2861431eff7d. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/JPTE02304820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dd57bd378dc25cc280ddf87819d7b95b378272b5bab3c7364ac6dfa1b55912a. 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/JPTE02305740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x766c19499c428d5c94d3d5d55a13707d208bf97b9a55cffbf0636e278bcab679. 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/JPTE02305730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66a1937f10b01a745b410b4b5ca109803ce971d9decbf6ae877d3dc8d6d1b46e. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:06:52Z), 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/JPTE02305750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d9a85cbd8d8cba242e79d755f7ed4ba2b834f2afb6c669dff60d2c36a46e31f. 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/JPTE02402020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdefccf4578d84247057984e02469603b6fe33461a9ded534934fbd2f874683ef. Chain 2 (Bitcoin): anchored in block 958378 (2026-07-17T06:45:39Z), 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/JPTE02406090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7afe0f9cd88f1e7b4ee4805c4fd17df1481d5d139c05cec4a37234fd18b51eca. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/JPTE02204220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2960b912587eb5a22cb11cd222435d999093c2f0b0acc6b0721f2861431eff7d. Chain 2 (Bitcoin): anchored in block 958091 (2026-07-15T03:17:03Z), 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/JPTE02304820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dd57bd378dc25cc280ddf87819d7b95b378272b5bab3c7364ac6dfa1b55912a. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:49:21Z), 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/JPTE02305740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66a1937f10b01a745b410b4b5ca109803ce971d9decbf6ae877d3dc8d6d1b46e. Chain 2 (Bitcoin): anchored in block 958095 (2026-07-15T04:30:08Z), 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/JPTE02305750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d4bfe41a8805a450caa8374961190598211acf816af9d0549cd81ab9ebcd208. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/JPTE02504220.