Crown Pop (stylized as CROWN POP) is a Japanese girl idol group belonging to Section 2 of the talent agency Stardust Promotion. As of late 2018, it is formed of five members: , , , Airi Fujita, and Mi
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 0x1c47d3ea822b9d50e12a1190f42502137e29871ed74a54bd7d8d1944bcd736f3. Chain 2 (Bitcoin): anchored in block 953879 (2026-06-16T02:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/083b2910-6666-41a3-8f10-3e37d01233db.json and https://artists.proofprofile.net/proofs/artist/083b2910-6666-41a3-8f10-3e37d01233db.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
アンビバレント・ハイウェイ (眠れぬ夜 ver.)
アンビバレント・ハイウェイ (青春コンクール ver.)