is a Japanese pop singer-songwriter and pianist. After overcoming her tragic childhood, she released her debut single Asueno tobira (Door to Tomorrow) as the duo I Wish in 2003. She is well known for
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 0xc4f11506a2050b2d8d9beab410578ea6e88af1678a9e026fa4a8f9a667f919e7. 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/1c5998cb-2bd3-4377-acb3-a33cbf37c312.json and https://artists.proofprofile.net/proofs/artist/1c5998cb-2bd3-4377-acb3-a33cbf37c312.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 0x143bcc8ef6386496a890d495f6361f6379998f50ca4e453b37d5ed23d3fea65f. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/JPB820500000.
「さよなら」「ありがとう」 ～たった一つの場所～
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70978b2aea9685ba679aeb9dfb72bfd765a14b5b6d8de4cde8506de063eb22e1. 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/JPB820800063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19e2fbbe5ae5b6ccc955c6d5ca1a9c9662d22417dfe789e9f8dc5d0a398aab53. 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/JPB820500036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa41a02372ba65cfe71013e744674acbb332cecb2e537f93a662af0754ffd9d6a. Chain 2 (Bitcoin): anchored in block 957874 (2026-07-13T15:43:57Z), 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/JPB820800058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc23c573b78feb74d7c23d6b081028395a9efab6348cff5c13e289e00b438c8de. 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/JPB820800065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfae24451239816242b1819644a94a33051bf98e89dd4602eeefc5b496193d570. 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/JPB820800048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a8fae48b9217975c425acc8020862f39c94b92b7f6ae1ad270023543fe22966. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/JPB820800049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69a99b7f0432f82bd603c7d1dc7e176ed17afea6aefb40f7b3096dcd8081d492. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/JPB820800050.
天使たちのメロディー/旅立ちの朝
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1ecda0bed4ef44b0bc5ec65da6027e13d89c076d36891b82f3549bc8cbac1d4. 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/JPB821101480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38d0b69580b28d2dbcf8d458aaa6786d64a3e1e45b66ff81d0bd6d248639e8ce. 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/JPB821101500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bb12c593923ae8acedb7a83fc57ea7b403702db067ecd91b7c5f5636bf6fdda. 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/JPB821101540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d1c205282a861a69091f527b6098c46d85696ddd021b03965858760a3957743. 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/JPB821101570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62512bf8bec51d71e4c6ded27b6c7a5516b2390064d6eb985c7d1fa93af78702. Chain 2 (Bitcoin): anchored in block 958627 (2026-07-18T23:33:54Z), 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/JPB821101580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8725f955a07445215470518b879e71179ccb027ae891ea7473d03a2f70590763. 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/JPB820500049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd14457ff5ff474f492e9e6a1773069e65b658e8cc3c475aa7746daa36d518488. 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/JPB821100490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16f62c5906df329dd3979068e00c89cca078bcd3a8d5476f61a934c3de610c06. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/JPB820600023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5144f903240d7df0651e30eda3dc795e4b6b24d0714fca3912652ba325f884a2. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T06:46:52Z), 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/JPB820600081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe9e92018436801304542858168f80652728ee1c4ee8182a13d259ddcb2009f7. 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/JPB820700115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0257611b2e863555ee7a79a523fdefa4863781a915ef08a2d357cb4776df82ec. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/JPB820700131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97c4e697af9e1da983011ffd524a50c4e438f8ce80116757b9a70f665f05807f. 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/JPB820800047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a67d19f0f226182e0f823b26a1c5c4c05ad5e7a9cbeceed9f6893228e82496e. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T05:51:38Z), 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/JPB820800090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7776ede5dbadcd2334957b665b5f8b32ffc28a5b6b1a9080f2ab9f859bf13146. 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/JPB821800010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf78f9eec69bbeaaa31fc9b0b70dc1b6d3039dcecf92ce8e1736c3a70d8d5967d. Chain 2 (Bitcoin): anchored in block 958834 (2026-07-20T05:55:47Z), 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/JPB821900100.
どうにか今日まで生きてきた (feat. 藤巻亮太)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x007869c1b4ff11202c11b98751d2bb3dafb1239dc1b92700902401836511a4d9. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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/JPB822101150.
My Own Pieces〜The Best Selection of Ai Kawashima〜Disc1
My Own Pieces〜The Best Selection of Ai Kawashima〜Disc2
My Own Pieces〜The Best Selection of Ai Kawashima〜Disc3
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c490ffd952504dfc26195408956790665e923ae7285a08841a9d53960a42915. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/JPVI01122020.