Nokko (born November 4, 1963) is a Japanese singer. She was the lead singer of the popular band Rebecca, which had a string of hits in Japan in the 1980s. Nokko was born in Urawa, Saitama, as . Under
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 0x310bf76e877c0757afc12ea9d1cf6d04e9b13a2ec7c11aeb9c7686b563c42585. 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/73a2e2db-726d-40fb-a17a-f18ede215c9c.json and https://artists.proofprofile.net/proofs/artist/73a2e2db-726d-40fb-a17a-f18ede215c9c.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 0x795b943a035c8030c0459da88274db7ee2bfeeb08eeed7abe00476992bdab175. 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/JPSR09601588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3751be2c9e147ff26d01e50b66e59892247ce7181f7e35fa7b00ed7a17992a9a. Chain 2 (Bitcoin): anchored in block 959091 (2026-07-22T02:33:54Z), 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/JPSR09400059.
ライブがはねたら (もうはなさない Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffa400ccc58e3b6a8e249de176963349fef8caa537e736e0c82ed0b1c103e62d. 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/JPSR09403088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3751be2c9e147ff26d01e50b66e59892247ce7181f7e35fa7b00ed7a17992a9a. 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/JPSR09400059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c21a6410480ccfa863801a4e90929d8f9c103d229ed7bcea97a6e49a9a22cac. Chain 2 (Bitcoin): anchored in block 959134 (2026-07-22T13:34:27Z), 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/JPBV09801216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde219ff30091a8ecbf8de713a1e75c63f686ee644394974cd8656301a26f37be. 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/JPBV09801356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f3e95a744d7f6a4a16691f2416e0ba1b2527fd33835d56ec12ec418365786b6. 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/JPP400600730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9726b29b7de6e8ff200a1b10ed3007186fb80c2876e54ff0fbbd7886fd503456. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T05:50:22Z), 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/JPPC01302256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3d3f739eac37b1a832aaa6e9abffe511a5958ed924a8aa88abb97a9c20a9068. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/JPPO01800648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b84bf4749c092b167e3a38c1644813d66a21914bc8b8b5972514b1d232e694a. 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/JPQ632200127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x385ededaa9f33e7c1d5f765f205b056fb89f398730e0f3c672d4dcf64d0fcc27. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/JPQ632200125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b239ed31924e5a3e8c849cd32a70d1aa71deffd4cddad6345ed4e24bef3a2cd. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/JPQ632200130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09d8fce41a756ddbc153c7285bdbfc92c23aac1024e14e7ea8526c4547ce385e. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/JPSR09400058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10d9cf7116ab19e10eb34a3183d286475353b15c1222fa6175a661ffdfc89afe. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/JPPO01013430.