, sometimes abbreviated as , is a Japanese rock duo formed in Tokyo in 1997. Consisting of vocalist and rhythm guitarist Kumi and lead guitarist Naoki, they have been signed to Victor Entertainment 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 0x6fe4629ac7e7e3d25b71cfc4c3ade4c15cae4a0312c7eac50d09f0e9d88d266e. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3d1d4212-279b-47fb-8ffc-af20ab16914f.json and https://artists.proofprofile.net/proofs/artist/3d1d4212-279b-47fb-8ffc-af20ab16914f.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 0x2fe5c1176635546f85f740712a89334866c455a02850d5a640ae5a9c96ac04c6. 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/JPVI00019270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x696dd4fb4160f220f1a0380e0dbf2143333bd31d5a87d44a746246f938802f50. 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/JPVI00030040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73aaa9247243eba8821e00db25dce3e11afbe5e0915080d98e8544fc912df23e. 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/JPVI00105560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97707665664345a57ae0eb7227518553918dd5025f5b7f61dd41287d9dc79f0a. 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/JPVI00140360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c48314c1159acfa3c453397f6c451dd754f903e766cef60f52ac913b43c9044. 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/JPVI00140380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce4799abca02634f1ec89589f7f418c783f9aec54500b97b9bb991f795c77252. 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/JPVI00140420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67e859f19e499575a3e4a0b62317be5e04b86ddf33f730c9c805a33055aa2f3b. 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/JPVI00402130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaff71530f6ab93193bbc2a722859fdf92e02374c8f89a45403167c6ce630659f. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:02:53Z), 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/JPVI00402890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70f3861f78df5e2832e7a2094d884b7f5e72eb22f94088cfae1553f1d0e968a9. 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/JPVI00327380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0793f8ab5a7580f331d25c85ac8bb9adf3eaf038e225c249002613354d7c6c88. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/JPVI00402900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1e3d69ac2624cff4f54e0d2a25a1eee88144a30c119f1888c19ef0ad2ce3f8a. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/JPVI00219080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1ec2656e21ede832b4db55d1efe97c7f49696989e84ed87d08da59a74f0cb3c. Chain 2 (Bitcoin): anchored in block 958681 (2026-07-19T06:14:54Z), 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/JPVI00942690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09fd5703540b0d53ed0808e2bd99b120b87a9140cbb3d42fbea1fe5a80a127c8. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/JPVI00942680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x480445d1399b2f757dd7219def2cb15b3396a335af5835ec82d85083eecdbcce. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:50:29Z), 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/JPVI00942700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x815de5d8ca45b613d2a3276e7bd71cf4b8d025991d4269e7644011b25a84dedd. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/JPVI00942710.
Beautiful World / Happy Xmas(War Is Over)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x312e4d0150f320ea9d0611a42f207204ad343e228d968752d4686d3447ff2fdf. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-19T22:59:45Z), 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/JPVI01226950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a515c4dfbe4612601fbd3fa6c21276a39b524236efa2c16b99fbc3dd69dd916. 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/JPVI01114590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb99072f84d4f57cc7e3131ab0975dc925cd43d13e5f1b5c23bae1b87c1213a5f. Chain 2 (Bitcoin): anchored in block 957603 (2026-07-11T20:26:17Z), 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/JPVI01305870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c6000d5f01d458440b274dc34e08235a5b9a9ae9f2c465a56a46c68860da282. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/JPVI00030010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4892b8c8a45e4bfe921262fafa8b8f62a3623004808cc96f1c2ad51143f2214b. Chain 2 (Bitcoin): anchored in block 958487 (2026-07-18T03:43:59Z), 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/JPVI01417590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7f49690815ea309dab2f380b79fb93364dfc6f9ffc6034b1a60e674876f4d96. 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/JPVI01008290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfad4e008180a97711462fae4f2d3fdb61eec62069329ec341ba5d62ef51bd1f. 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/JPVI00140410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fe5c1176635546f85f740712a89334866c455a02850d5a640ae5a9c96ac04c6. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/JPVI00019270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73aaa9247243eba8821e00db25dce3e11afbe5e0915080d98e8544fc912df23e. 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/JPVI00105560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bf7543e410d8dd776d303e623d223cc6417adec2be30a94e1ddf4b5c1afe544. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/JPVI00140350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0793f8ab5a7580f331d25c85ac8bb9adf3eaf038e225c249002613354d7c6c88. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/JPVI00402900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e374dc5bab1cdffa24b6243df83ab944c1555b032e1dfd7ad6d5010a1300e5f. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/JPVI00942760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce4799abca02634f1ec89589f7f418c783f9aec54500b97b9bb991f795c77252. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/JPVI00140420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15f1383d8e2a2c3796bb2e0fa5610792f697eb1a52cc68972e433923e9d73a7c. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/JPVI00621330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddb19407bb66d113989b42c014b526404808c69e4daa5df0b8487daf18ef93eb. Chain 2 (Bitcoin): anchored in block 958681 (2026-07-19T06:14:54Z), 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/JPVI00030060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1e3d69ac2624cff4f54e0d2a25a1eee88144a30c119f1888c19ef0ad2ce3f8a. 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/JPVI00219080.
LOVE PSYCHEDELICO Live Tour 2017 LOVE YOUR LOVE at THE NAKANO SUNPLAZA
“TWO OF US” Acoustic Session Recording at VICTOR STUDIO 302
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3f04843dcddae7b99de819e0250f16d1fac596d6795b5a9f5c19b4b77ef6b37. 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/JPVI00029960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3ecfb22ff6ded767f95d43b6ba5fa77af8b7bb565d4b86c25bb7d1016ea354b. 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/JPVI02201598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71162129d3ad896dfce92fa0e0704e16a663a5cfb49147b2adb96eaa172cdd0c. 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/JPVI02201597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0dc047d524261c5b82fa198ba818d8c35039f53450d3f30b427c1d25f424c36. 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/JPVI02202554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d6e651a089f16e392e7df45e7a5c763df5931bab2b776a6c6fe4d02f935f914. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-05T05:07:15Z), 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/JPVI02202555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd89cb2e8f30de03cf7267f8b5da143904e77886056f74cc32a950abf1704032e. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/JPVI02000770.
Live Tour 2022 "A revolution" at SHOWA WOMEN'S UNIVERSITY HITOMI MEMORIAL HALL 2022/11/23
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4474c2b5c901657979b077f7517ef651ede50d41895209f24c417f1a6dcf318. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/JPVI02401321.
Premium Acoustic Live "TWO OF US" Tour 2023 at EX THEATER ROPPONGI