Poison Girl Friend, stylized as POiSON GiRL FRiEND, is a solo music project by Noriko Sekiguchi. A singer, songwriter, composer, producer and DJ based mainly in Japan, Noriko formed The Poison Girl Fr
{"copyright_id":"0xcefbaac1352ad13fa738cf6cbd77e8cc42ca04502cc938e59cc7438dbbac6fa8","name":"POiSON GiRL FRiEND","registered_at":"2026-06-15T15:08:23Z","symbol":"NIM0746522","token_address":"0xcbc1cc24f7ee9219ba8191e2fbcad522fa606dd7","type":"artist","uuid":"04e85ae5-dbf6-4111-8f3a-7d3d18cf7af9"}
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 0xcefbaac1352ad13fa738cf6cbd77e8cc42ca04502cc938e59cc7438dbbac6fa8. Chain 2 (Bitcoin): anchored in block 953909 (2026-06-16T07:53:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/04e85ae5-dbf6-4111-8f3a-7d3d18cf7af9.json and https://artists.proofprofile.net/proofs/artist/04e85ae5-dbf6-4111-8f3a-7d3d18cf7af9.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).