is the performing name of Kenji Watanabe. He is best known in the West for his contributions to the soundtrack of the anime adaptation of Honey & Clover and Honey and Clover II, for which he provided
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 0xc49147f874e9b367fe1b84e852170ba59a3919d2ebde4b38a3d0b87c9f2cfcd5. 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/12a5cd21-1fd4-4a3a-95d4-9a00a0ea773a.json and https://artists.proofprofile.net/proofs/artist/12a5cd21-1fd4-4a3a-95d4-9a00a0ea773a.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 0xca1cc35ea7ef5a24e94d74e451dcae20e9b26ccd15966bc97ada328570101ab7. 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/JPES00201029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef7480db56425492a428b00dcb95781f394fe37efb48b443ed2b3f378a2ae025. Chain 2 (Bitcoin): anchored in block 957699 (2026-07-12T11:51:06Z), 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/JPES00300961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3025c29ad339d50bc9d44ada695905cbd677dc38315349ce63f33cd7c4b16db3. 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/JPES00301042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9b212fa2f204c5a561cd5d9c7f3c277912d2ff47dfd0c223d2f6c821636361e. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T04:56:38Z), 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/JPES00401381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ed7a21a02671d07eda8c36085b0f50bef4748f68d0847ed8926a1316589f16b. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/JPES00802021.
伝えてよ／気まぐれな季節のせいで
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e3dde89ccd0a709e074b302f750f4d7031ea768ee5f170a6ffaa354b08369b1. 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/JPES00601561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cb19faec62c6c61bb131c542660c4d0cebc327a8ee96b3c03fa22e9b4bfba71. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/JPES00801941.
JUDY AND MARY 15th Anniversary Tribute Album
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77571cc85bd97c65e743f01984fa52ea10d82bed01721e6a6cff3462095f45f6. 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/JPES00900308.