was a Japanese band consisting of Emi Fujita (born May 15, 1963, singer and wife) and Ryuji Fujita (born November 7, 1963, guitarist and husband). The band's debut single was Umi no Soko de Utau Ut
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 0x0c43c4b4f1f2e06d25b391885c6b31c4cc06bf6871f19259c7f8ab708d4f6862. 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/b032ddcb-8c89-4a86-99b6-8d3a3bb3e963.json and https://artists.proofprofile.net/proofs/artist/b032ddcb-8c89-4a86-99b6-8d3a3bb3e963.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 0x6b55af7f15a8373a216495d2e7c3273fe0c4fb5e6801f75a751ef0838a4962b9. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/JPPC09705860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e82a9ed1f7e7f2b37de262b726aea0489c4e02530f8e324d8c7dbdf155c6d2b. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/JPPC09716125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbb074016c520d177eae277aa0935b9c145aab47269ca933b5de6666a3b9efaf. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/JPPC09900571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d00b7afecac31627f9c85f3ffe79a5b1c91911304eef5d4fc0e8c502ccddcc0. 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/JPPC09410860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa65b38a825321beda2ecfc524c6e44b50a62bda0dd8c92ce9514a526879f50c1. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/JPPC09716456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c788772f7be4ed994e210a8970184611cbc510dee1263a907ca466b896d9237. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/JPPC09901271.
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 0xcda11682dd940342a29efd0431c015a1b323c6a452ccae3c90b1a4c50f497d0c. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), 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/JPPC09715311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf533a36e1511c5eb3ec4dab9a8f53ab2e2f38d89d75cd3d7cd4640d2a096374c. Chain 2 (Bitcoin): anchored in block 960266 (2026-07-30T14:44:50Z), 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/JPPC09716455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f7403a8df271c9832e26fc918f6582cd0514f8f2a31259039568e91afa4475e. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/JPPC09800991.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6222724eb6c11673a034274f74d23957eb0ea0a072cd15557da1b068e2052db. Chain 2 (Bitcoin): anchored in block 960427 (2026-07-31T15:59:18Z), 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/JPPC09716126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ebe95ca165b8ea20ebcf79b93e091d9eb4297ee938a35f4d0c6ae20d8782fa5. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/JPPC09800772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf225e30f0e127915cf6acb8a1c5e85f23facc797d608e7a556ab78442301c28. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/JPPC09429070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ca2324418c503c20134abeb78d94a4c2dec3e868b50e51cf59e874b8d225b95. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/JPPC09705910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x541840e0f17a2f34b634d87ef8e4ef00c9736f8dac2a8f4727ec6001b74fc0c8. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/JPPC09705920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfd661c4723b21bf57c9abbf3fab2304aab3533aa522dc6810cef330a935c7f4. 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/JPPC09705930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe730a0b0748ab06e3c8a59c7bf0d0505e9705bd5a45b2e963f58c3502a6a4c1d. 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/JPPC09705940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ff804fd57286ffec8dafd78c030d4cf96242056ba8bfcd579f27ca35db9935c. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/JPPC09705970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44aaa69167c5c7206533511d34c2d1775aeb288d63f46b3413a7e5d99a66064b. 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/JPPC09706000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5072a94dab71bc4f5ec25e4f70d2a14c8350823048e49d72851f32ea4b78aa35. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/JPPC09706040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x337c5d848395601c99be631d4481ff320022b9cd4aac87a0078d7fa893c90f61. 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/JPPC09706080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e3ed76a4a10530e3d2253bdbece8d86de7fb685bd6168557ee21e39a6d2a090. 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/JPPC09706090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1302248f74e9a02f4d00782140572429dcaec616056909d6042bd0f84d679add. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/JPPC09706100.