is a female singer-songwriter and hairdresser in Japan. Musical characteristics Nakayama, in addition to singing, plays the accordion, trumpet, and guitar. When performing live, she is usually acc
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 0xc3ebc24c4895af56115929af265a824220160cf5141d7455cf00c46a49f45446. 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/916d2726-2332-4322-830f-a52edd772daf.json and https://artists.proofprofile.net/proofs/artist/916d2726-2332-4322-830f-a52edd772daf.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 0x4938dcb2d5c4144e89bedd11764c3922d9058a20ff6fcf8b14ea1cf9923d3ef4. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/JPZ920604177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93eca19bc936c6842a1ce6b4ad85a5f32cc0a975d3db81fca7ee621e95a5b76b. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T16:38:30Z), 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/JPN200801281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3e9324f02238b9a0dc521ce7fe29e68d2edc7ae18cbfac76e73b8c6d0e6f03b. 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/JPN200800225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fa84bcf6406123fd9cef70bc1d58e412c8eb5971dd6dde78e04277419fc81e8. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T03:16:40Z), 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/JPF661000064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x797b430f9568d4ea39f25c8c9fe66aa94b70c9a1d71b5adc2f63c2fa21718899. Chain 2 (Bitcoin): anchored in block 957709 (2026-07-12T13:52:43Z), 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/JPF661000111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaceb0cd061b072a83aba1ea4e03f37b7e224a79c784f744385808148b068369b. Chain 2 (Bitcoin): anchored in block 957711 (2026-07-12T13:56:57Z), 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/JPB761200037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62fd14a8ec29e9bc2ae0f64fe2e282a070ec216ee0469a5e94eeefa319cdb303. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:40:59Z), 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/JPB761200039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dd83b49b67c901d9e8f3348ac6f44ac6d5749c7c7505c157a67f72197e8d42b. Chain 2 (Bitcoin): anchored in block 958891 (2026-07-20T16:25:01Z), 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/JPB761200041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c0c49886214aa62c360b704ebcc11e358d59cd3a157e439db56c5ec46f40fdd. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/JPB761400031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3e276c3b32fd5fd5e29dc6c4567437e21a8e52828fa789c1376e541df2e5bb0. 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/JPB761400033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a8fc8e3af671526b21210435acb96048257f877f930107abae661d968dc8566. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-20T01:38:46Z), 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/JPB762400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x121f9cb97244b06f540e80d634e3ee67942e8b5c638598aef07754b23135486e. 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/JPB762400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8054b8b3a4f28bd274032a72334306e00da55233c63e574c28b123b5b611ad76. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/JPB762400006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ef500a600e5fa2c2a9fbf275a86c276c1460a3b1ac435888ef9619bd2b20d6b. 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/JPB762400007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d0b90b91fb62bb099ee5a2815a9c76c3aa88f1aef5edcca0aee0c594a87f7f5. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/JPB761800002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07639375b674d8e7f1105d685098408c94c37b18a60a2d693b85f31d6bf88120. 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/JPB761800003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0aa2617c7842d04bf620d93716033145642c24936d667cac62f8d9801b07b0f0. Chain 2 (Bitcoin): anchored in block 959015 (2026-07-21T16:38:40Z), 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/JPB762000001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb4d183be63c3e163a66598123b922c5a17ad965d8bd7e9fb724d52673785513. 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/JPB762000003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2870816f56c828142b8e62097539d310b2dd055734326a92c109e8f2edbaf333. 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/JPB762000006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3aeb3b0a5debacd72c6d9e0feec298f1567950ed09f75d036261df2f211e0e90. Chain 2 (Bitcoin): anchored in block 958987 (2026-07-21T09:04:56Z), 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/JPB762000009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05edbb9f6c1e4c5fec2403c2df88a5243dc7461185a9bb28f5c003aee5535f3b. 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/JPB762100002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1572747a3ba065b6e1cc601352ebbbbb8f09c80545a8c684c5a3975aa186d795. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/JPB762100003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x481559896f10975a01a9c2ec21aa0195682def1db0e403f1212a4172bb20eb23. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/JPB762100005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71d5ad37725bf68dbb451895a26251234aa05b478ce780cc5f5c11d608466dd0. 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/JPB762100006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f4005e7de56dc495c1d48f4edff1119aa80cc37ecf546fdc6288ea76b124d19. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T07:44:41Z), 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/JPB762300009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd77a314cee6ea262cf345fd3162e0771258e0a0deba71d76a987c52d4707ace8. 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/JPB762300010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed1bc730ebe34466d8af3f067e270a7b984cd008399e35c653faec52bb3daa67. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T18:28:00Z), 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/JPB762300014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0d1bdd896eee28e3317bbdec36233b0879b72b1214f64f3313b4340332ca33a. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-17T00:08:12Z), 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/JPB762300015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5f1daf4bfbb699ef5bdd7fa543dc36c8d2b87dac88702b702710ba1e32b1530. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/JPB762300018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x568750f74b289dd4d2b34ed7085d07f9e54b4b70d09373a22bc6428fa5aeb1a9. Chain 2 (Bitcoin): anchored in block 958686 (2026-07-19T06:43:29Z), 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/JPB762300019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fa88068d61c3a199e95fa9961c05363f790474888a802f2e7999ea7dcb2b9e9. Chain 2 (Bitcoin): anchored in block 957779 (2026-07-13T00:19:08Z), 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/JPB762500017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99a53d50cb6f7b9bd4a8eba49ef4fc499293d53ca780c3b17b73b8aa4cce98a2. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/JP92L2307430.