is a Japanese singer. Biography In 1973, at the age of 15, Sakiko Ito was a contestant on the Japanese television show Star Tanjō! (A Star Is Born) and won a recording contract. The following yea
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 0x001ea7a6a0aa9d447cf362e0e9b577380f7a57d3c86a325dae0157de66fc3e4e. 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/48252893-d20a-4a7e-b972-a30202f754d8.json and https://artists.proofprofile.net/proofs/artist/48252893-d20a-4a7e-b972-a30202f754d8.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 0xa57a1bafa6a970b9f475593918fa6ae3e24879cae063ac36c53c117a60ef93a5. 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/JPTO07610390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34f7782fadf9d24175bfce3f5e541ff354b835a33d6b407f8efb6b0528d08ff3. 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/JPTO09312630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1750939c81421d42ed784a5e9219b43e4c76d283432ca0edd793ff69db9031c8. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/JPTO07715870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x051748733eb8a76d13cf8697a95415d26640a42a6cec2e76bb9b2b73937a35e5. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-16T23:41:55Z), 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/JPTO07815260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fc6f34fc68f0f9b5ce33126231c8d6a96435f2c36076a1d25cc4d01d85477b5. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/JPTO07615230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa57a1bafa6a970b9f475593918fa6ae3e24879cae063ac36c53c117a60ef93a5. 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/JPTO07610390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34f7782fadf9d24175bfce3f5e541ff354b835a33d6b407f8efb6b0528d08ff3. 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/JPTO09312630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fc5b6dab7614b33d6bd17c6bbae467fd3e3582eea45775ea8060f34990746b8. 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/JPTO09433750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fc6f34fc68f0f9b5ce33126231c8d6a96435f2c36076a1d25cc4d01d85477b5. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/JPTO07615230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34f7782fadf9d24175bfce3f5e541ff354b835a33d6b407f8efb6b0528d08ff3. 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/JPTO09312630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1750939c81421d42ed784a5e9219b43e4c76d283432ca0edd793ff69db9031c8. 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/JPTO07715870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x051748733eb8a76d13cf8697a95415d26640a42a6cec2e76bb9b2b73937a35e5. 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/JPTO07815260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa57a1bafa6a970b9f475593918fa6ae3e24879cae063ac36c53c117a60ef93a5. 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/JPTO07610390.