, born 4 March 1986, is a Japanese J-Pop and R&B singer. Born in Saitama Prefecture, she began her career in 2009 when she signed with the music company Universal Music Japan her first recording con
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 0x64a45a3e48967cd7b135b518533a9c6850889507da10cf2efafe5ce9be2b53f4. 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/b8b7d434-ddb0-4fe3-b697-f2057a978245.json and https://artists.proofprofile.net/proofs/artist/b8b7d434-ddb0-4fe3-b697-f2057a978245.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 0xcc5a78f4e9125a1b2580ef71daf132db849968d16eb54a3a89b46bcd49974217. 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/JPPO01207058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf67e156e0e372b93eb9f7d77e32b91e844dd8fba686045c2c2586cd286a3c34. 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/JPPO01207069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa3f435798b002b3437e5910385ff54b4c655004a424c102e21d232e554498c1. 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/JPPO01204152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03db8d47655a7b450c1e501b9aefa04a101dae29b558f9e04907cfff78bf39f8. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/JPPO01086380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83370f210c0a7f01eb61b3d038ffa28e32a376d3c331cb42ff5a16a4bcb1fb04. 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/JPPO01133800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97358f6adcb4fbd852d87593fb57fa6c5ca3516c4c7de0e2c46e3d7b3fffe84c. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/JPPO01139287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x237fc575655e326e7a5ba7a6d175f9b619fcbb478448f3769ee934d665ae3d71. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T20:52:54Z), 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/JPPO01116550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d85b1017f47e8f75951832c597c81ea5629a72c2fdcb6a7ef26dbf6cbee0c77. 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/JPPO01148812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e6c812b0c3e92fcbf345b96715e7506873c45dc144e01435a797accc1413e20. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/JPPO01147729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b375fa44e9901ad1e78646f57e2b0219b373e568640070ee23da912bf25f193. 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/JPPO01143330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4343980140547c926117d54cff21455f57cd727f22f759d36ac7eb282ad273c. 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/JPPO01149661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf27e2809a200f52f47247f377603dede2aa7a20f4980bf15b032586ef016a74d. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/JPPO01143457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a6bdb3e3e34ccc9d9d1e76f91324c9bd3f2f7dfee533315cbf577cdb8b3fb62. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/JPPO01013410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7b50506eaeceb2745aff9a8176ca3463c643a68f0d038577ef63b9b0a47bb5a. 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/JPPO01013440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2e31c1ee1e61e3395bb42d29bf14eb5af1270d98824f9926c95de0c80c47927. 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/JPPO01035730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d109b8f5523f18ea0cc58568407327391e0158e56359dc7fdb3ef9ee15c07ab. 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/JPPO01064210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74e1fcd5a38b6482cb466299c09050c5d1ed13aa14a85dfbf7a9d69a51c901ce. 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/JPPO01064220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54e8b6e4f8ee2152997960d20641da2b08136fa534affc002405572704eb724d. 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/JPPO01095750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b375fa44e9901ad1e78646f57e2b0219b373e568640070ee23da912bf25f193. 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/JPPO01143330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf27e2809a200f52f47247f377603dede2aa7a20f4980bf15b032586ef016a74d. 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/JPPO01143457.