, AKA Ken the 390 (Ken za Sankyūmaru), is a Japanese hip hop and R&B singer/rapper and voice actor who is an artist of the Rhythm Zone label owned by the Avex Group. Life and career In 1999, Ken th
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 0x6cd1871380e7cacc5b9883d25c55cf8f6bb3a83fa53d64221a559ae6849223df. 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/956d80cc-a948-4069-a5f1-38029fda5114.json and https://artists.proofprofile.net/proofs/artist/956d80cc-a948-4069-a5f1-38029fda5114.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 0xa7baf08582922decd5b8ec5c6bc77190f241cd2d75bb0bc368bba2e294f8385a. Chain 2 (Bitcoin): anchored in block 957780 (2026-07-13T00:36:44Z), 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/JPB600853702.
無重力ガール (Chase feat. TAKUMA THE GREAT, FORK, ISH-ONE, サイプレス上野)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62f65d61fc5393bc900c179ac32ef5404b10cc83008ed3d3cd1bace406699be6. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/JPZ921401968.
Makkoushoubu feat. MC NIGARI a.k.a AKAIINAZUMA, KOPERU
Makkoushoubu (feat. MC NIGARI, KOPERU, CHICO CARLITO & Shinpeita)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d91dca49d5cb7e7b856af939b4efe222295ca0353dec767b1ad6f56addc6890. 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/JPT961600101.
KEN THE 390 ALL TIME BEST 〜 The 10th Anniversary 〜
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d91dca49d5cb7e7b856af939b4efe222295ca0353dec767b1ad6f56addc6890. 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/JPT961600101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdec0a2c4369f18b06a5de05a66ce0b293540cbe2030a97b4de3e6cca4a1f05c8. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T17:14:36Z), 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/JPB601013303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe272ba41690f22499961f2bda908c40a83a2c718fbc07b4717348f6d07c788c0. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-15T23:25:50Z), 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/JPC230702329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e825b82228818b2bc70598e3d3dcec78fd586862822fec3b8259c0a6893da6f. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T08:45:32Z), 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/JPZ921205670.
Call Of Justice (feat. DOTAMA, Rude-α, Rei©hi, じょう, ACE, MC☆ニガリ a.k.a 赤い稲妻, Lick-G & KOPERU)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8bfd2b93375b0b3920b177155e1e4b438640f04de85752d136ce94e7111499f. 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/TCJPF1751437.
Rock The House (feat. R'kuma, Rekko, EINSHTEIN & Joe)
Rock The House (feat. R'kuma, 裂固, EINSHTEIN & じょう)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb9d4d2a6d0300313a90b93498c1e94fbfa98d27ab9e6a9692db89b995fbd8ee. 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/JPT961700501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc61fb21ed07c73dc0377a6b5e8a161151f838063c4205acb77be0a88ce3a226a. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T19:55:44Z), 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/JPT961800106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe12437563e07f74b53838e825354d6eca35ebab265b03b4299bc1a2894d9a12f. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-21T09:00:49Z), 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/JPT961800110.
Nobody Else (feat. ACE COOL & Moment Joon)
15th anniversary DREAM BOY BEST ~2012-2020~
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef478bbaf70195d1c79f7220c0463e1924792f60e97789984fd157ee56d3055e. 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/JPB601603147.
Call Of Justice (feat. DOTAMA, Rude-α, Reichi, じょう, ACE, MC☆ニガリ a.k.a. 赤い稲妻, Lick-G & KOPERU)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x712984d0362a4ce3132f53372c7b14b444415760faf3f18e4991a83e6b129873. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-20T01:38:40Z), 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/JPT961700105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaeea3a4d44f6f7efcc1a3bca859c3fcbc1e44a494d50da8646a7b361ba73a6e9. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/JPT962001001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9fac1e99388d2276161510d2202252ea23e512fd72fb5d2c1a8efd40e48fb5b. 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/TCJPM2077604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf645b1bb3bf2dad208b520975f943d462998da5f04a64db8ae503529a68fbd36. 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/JPT962103004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9512ccd691eb608e4f620d7e5fbf11803c02b79cbda69e8db9ee0103041b368. 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/TCJPM2007431.
Break All (feat. Take M & KennyDoes) [Remix]
Break All (feat. テークエム & KennyDoes) [Remix]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5365aafad2cfe499c270ea49325882d4cfdc9d7b743b55192c8d5c1cca7ef3ee. 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/TCJPO2193603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x495d7a50ddc277d2b61e30790ac8abe6e4af56a2e5c76bcd76383c6d27493a64. 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/TCJPR2220486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a1da2e4536f7f63bd944414ec781fdaea9fe4cdb1eed726bf2e476c16c00bfd. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/TCJPR2220499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99860b55372a27f8338f7a9886f3614553c86d11b5d0e953f9bbc52785cac97e. 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/TCJPR2220516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x495d7a50ddc277d2b61e30790ac8abe6e4af56a2e5c76bcd76383c6d27493a64. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/TCJPR2220486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe01204abf84ee1ab90d5af19ce340b0f90f255a8cf904ac74778bbf1372ef974. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/TCJPR2220491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1f325863979c5db9fb59dc30c16474b8400c885f0839fa90ad59515a4662c20. Chain 2 (Bitcoin): anchored in block 957780 (2026-07-13T00:36:44Z), 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/TCJPU2349106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4091e0aecdd20395ef94b87ca40783d8dfef15c0851dd5c39c1883f627d1ffb4. 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/TCJPD2566315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb19e3184a4cb8900e31d0e10370811330138901cf2b996255d552ab8e494ba9b. 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/TCJPD2551768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa968d4e5da8b1679b124ab6dfc5143953a2af322af44fb04bca7232534530559. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/JPPO01147665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x121a0aafa1b855b06f303e198fd81e6a4464d079a2697e8d7f39d4b996eec434. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/JPB600933601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa72314845f8bc67d787cdabe044c3e0fc63d48f51ea0b4f17386dc36495bc4be. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/JPCR01504910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00f6af664aabdaaf4279b93a572e9e640178ef42158b155641ab36941c700008. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/JPZ922112949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa5bf3068b3525876e76b128640635edf561b3a5f7648c737bebd6e82b5c7e2c. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/JPTE01700750.