, is a Japanese rock band formed in 2005 by Yumi Nakashima, known from the band GO!GO!7188. History 2005: Beginning In 2004, while a member of GO!GO!7188, Yumi Nakashima released her solo album,
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 0xece6919e3920506277d8222d7c4271f72dd9c0c3fff5f630a64f43c9fef64f5a. 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/8687e8fb-376a-4881-a333-ed0d023cf80d.json and https://artists.proofprofile.net/proofs/artist/8687e8fb-376a-4881-a333-ed0d023cf80d.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 0xcf0a3451d97ed7e465e8b2cb18ab2e4962af9c59506818342408171d6bb35fb1. 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/JPTO00501721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea2737bff936a7aab71b7a8682b7fe945f5b1e112e0f9648f373c7392e99a03e. 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/JPTO00501722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x037d64590a1fe849d27e19e47c5b181c08521598eb94b86009ee85656609b658. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T17:55:52Z), 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/JPTO00501724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2aaea91ad9016f5184aae1defe03dd2a80a37106fb1ede70a376534286f1351. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/JPTO00501726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0f71464dc0684abc4189d48e54842a053441feefc15dcd347129f34fda55064. Chain 2 (Bitcoin): anchored in block 958368 (2026-07-17T05:03:25Z), 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/JPTO00501729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd78cbd6020dcb00cfd73f3a52048fc28b29094b5374aa9f19deb6d6a55b5bad6. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:04:16Z), 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/JPA892100003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb397c02e5a44a31663214c2f0bb8095e76166b89364864939bc4527495fd5047. 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/JPVI01035100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd62eadee8f99584537af8740684359020ed990dd1633f253299e7ba06ed0937b. 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/JPVI01105520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x711e614be13c5164c7aa564f308afb97bc561370c3f3348b262f2a72019ea511. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/JPVI01105540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbd7b1568bbe9ef90180ac93165d968692dfae0e6e04bb1c71df1c9384be68e7. 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/JPVI01105530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdab26c15dd41355443435d1765971d9a7d04c29e0d5f55a555d0aa30633854fe. 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/JPVI01105570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x075258f9e9540771910426d26072086c8c2ef80ddfd72fd7f1ed65c26f7fbc47. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:18:25Z), 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/TCJPV2300144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae6f72b0e36616e564d3f17f781bd0c73f528d62669b7989ef7eebbc2bc98374. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T18:01:47Z), 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/TCJPV2300157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf00d4d25f88c59005c879f1eee17337b6ceedf8fc02edb379e433455a55ce462. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T16:46:42Z), 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/TCJPV2300159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93e9dcd348eecb20ccf3cd8f73dea0753dee7b7487052680d29398200fb8caa9. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/TCJPV2300164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0d229f1559cbcea9bb5d90e887df1622645d7a1c2d0b9fa0c6d7cd20604de31. 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/JPZ921302766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x188624b3db611e7049099060caa3e2b6d1cfadc091d00e7e180e405bafc17260. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:57:10Z), 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/JPZ921302767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f8e0f80fc08b4c0cf7641513ebd54b45bec4e13b76e62a67d84017e783c9d72. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/JPZ921302769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6059ce737dc59a231a36489d83365985c837dbea990b62e54cbd9668007c8fa1. Chain 2 (Bitcoin): anchored in block 958860 (2026-07-20T09:58:28Z), 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/JPZ921302772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6b113314b224a98e0210aa2169a16c59dfcab3e05b2a5969cf1e613cedf7f1c. 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/TCJPV2300202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82a04790d5890deb64bd53125125be50eb810a2b391b035249462ebe6e0edad0. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T08:22:52Z), 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/TCJPV2300207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6856b0677a870bdff5a1fabd0f749d489bfeac3be9a5698e67ed01deea106eb. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/TCJPV2300209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff37b48f0a8e22e76a3cc54231c301c237dbbcbbc099851ecf9f5f9dffe245e3. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/TCJPV2300211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff42c56aeee2ce0b4a64f327b36f4940982fe5d8cb0e7b63f774a0bc463c677a. 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/TCJPV2300212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafc34277ac9813fcadfc5dc9712d484c2bee66b006c3ba330ed9f8b3839cd17f. 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/TCJPV2300213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x634e663a46301947bdba866376d2d287be78ae9dcbe343729dde3b26c77b5116. 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/TCJPZ2462928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc08267af76db160ef5e2d7c5dbe27d72b842bb2584f39e7c3f62a23f984b5d7b. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/TCJPZ2462931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d320c52417892dfd673c1952d15937d2e7e8077f68e0c680bb47571a321e844. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/TCJPZ2462932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd97f06a54bde7c8fa782d6c46d544cbf6ed9f24f0ce07d0b2cf0ded3f025ccf4. Chain 2 (Bitcoin): anchored in block 958639 (2026-07-19T01:18:30Z), 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/TCJPZ2462934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f9bb0b976e96dd578ba0e528cb7998657686a9dc4545459605e2e289a590498. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/TCJPZ2462935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec8922b90a8777d1d24ca5bc4f6de8c357c5c77157fdd7fb306f24c70b38f384. 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/TCJPZ2462939.