, also known as Tatuya Ishii (born September 22, 1959) is a Japanese singer-songwriter, artist, and industrial designer from Ibaraki Prefecture. Biography In 1985, he debuted as vocalist in the ban
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 0x65e856c709f25822a48a1fb17da6f0c7a79a9a5c0c2dc73c6093727a47b6fe58. 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/f13e7699-e0d6-4215-9c54-387ad75e6b6a.json and https://artists.proofprofile.net/proofs/artist/f13e7699-e0d6-4215-9c54-387ad75e6b6a.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 0x4767c719773480e6a63f1300924d6ed4054464b076d6f3235e1cd57933e9149b. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/JPSR09812430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87695de286d495458c9a17a53ad71d1c5b222a50c84b1b8da7b2d986555e6a68. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/JPSR00000101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ab7d2b35b6d1a9817492d102c06191b0e816daa49f852cfeaa7a7014298cfc3. 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/JPSR00203366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26c6291e10b0465431b158a8170d7ae053ec7b0be6f266d1d9470d7d01ab4f99. 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/JPSR00203367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70b9e4263e29f5dc028a91e7fa6ac48fb758511f2da145f0192b119222849956. 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/JPSR00300122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x224f2985a531b996118d28b1cab346e89ab822a22ebc3c71abb3cbced5bc5409. 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/JPSR00300549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc134639eb2cd143b64ed515c38cee16167d572959ebd09234cc8fc5ef926a000. Chain 2 (Bitcoin): anchored in block 958415 (2026-07-17T12:50:13Z), 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/JPSR00300382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb4605e9718416a0c1514f2fa94df93ac286d9794a373a1af839f828a94c01ba. Chain 2 (Bitcoin): anchored in block 958991 (2026-07-21T10:04:40Z), 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/JPSR00300830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x101d1c0f3d30d7ddce2e49034059ce69236406a7971de2434deb7dbfd17a530b. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/JPSR00300831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a9f68fa7230bb91416109dc9d239d8706b3a5ad2f53c2410a8304313c4ef909. 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/JPSR00300832.
夢の迷い道で / シルエット・ロマンス
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbedb695064352e04342bfbbc066e7dbbeda5ef337b09e7886b60a040b1d262fe. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/JPSR00300381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84d3c13f3f618a320eb3636a4cdf623e209c7cf4b99b0f75fe3365d077961eb4. 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/JPSR09705956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe751656637a464c6cb9cc8a122479ea9e2cb64c73a45168f16780189003b4bdf. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/JPU901702720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f4b0755a2d33986423c980f3e78d930e04144df03c34172d5889d758f54ec11. 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/JPU901702722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c9f542f8ceb397c6e08513f6f34071c467ff85e237af3248aa6f61d1965aca3. 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/JPU901702723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf34279e4eeff71da531c3dc15fb50fe6455a0aa01c6402c1a031cc5b4a43331f. Chain 2 (Bitcoin): anchored in block 958561 (2026-07-18T14:22:01Z), 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/JPU901702725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80bf44a8da702ac7a5a00ac438a272ec86968b7ccca7cfe4f456665c60bc49c0. Chain 2 (Bitcoin): anchored in block 958185 (2026-07-15T18:19:04Z), 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/JPU901702726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb11cb8032c8561b623098873008acee03075147f016d213e399e1a0c64b01f5. 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/JPU901702729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a86f567fdd21e0c6e83b1e66b01e4871c2ea3732240db1999e086ab71366e68. Chain 2 (Bitcoin): anchored in block 958731 (2026-07-19T12:35:36Z), 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/JPU901702730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb05586dd6d6463704cf849b8fac723f88300b3c3541292205b7b5fc93243b293. Chain 2 (Bitcoin): anchored in block 958819 (2026-07-20T04:08:24Z), 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/JPU902404007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7be0d7af145e3981586c892c66235a4cfc48ba13da88fa9cace9526a0e1c597f. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/JPU902500843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbc1c249125a0563fd9329329a43f5ccd0501d8e3847c4c928bc9a262af2fec4. 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/JPU902500841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe24dc61b69e8b493eaaee27e0d49eb7faf5d45b3dcb9fec755c0d6d14ef1091f. Chain 2 (Bitcoin): anchored in block 958380 (2026-07-17T07:07:02Z), 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/JPU902500842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7be0d7af145e3981586c892c66235a4cfc48ba13da88fa9cace9526a0e1c597f. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/JPU902500843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e12a8dab00542b002759a533adf52b2e7aed6ace052e985ad3c5ac6fe8e2a09. 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/JPU902500844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb105b8eed00c13e657d4a8543b9020d18e9fb5f65ebc9ba7c3559e762e3bc6d. 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/JPU902500845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4fd28a8f332efa8e4daa3162772f090cd15d49f333ee50e56f663cacd4574fc. Chain 2 (Bitcoin): anchored in block 958376 (2026-07-17T06:41:00Z), 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/JPU902500846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65a4216c0de3718bbb23370b086cd21618d189cfc02b9eca8e3b77e6906b5e03. 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/JPU902500847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x897277adbc9a24be902d6b9f2b089a210b49dd89f097371784316206c4250d5f. 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/JPU902500848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38f3fc0730b2983e7963f8cbe484a33637e1b445b3f073b3d98964339f22d0d9. 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/JPU902500849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07d6ec1df4e55e39a982e5097bebd263eb173dfeee0f6a3e8f91b52193419386. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-20T00:12:29Z), 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/JPU902500850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfed37b206751caebbcf79a83030150204249d8c152b260e0e231fb0255981402. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/JPU902500851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94c0a37e998f10091e8f070454e62cd2608ebbfd0dd54ab484d2d38c6549c151. Chain 2 (Bitcoin): anchored in block 958590 (2026-07-18T17:28:56Z), 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/JPU902500852.