"Shock!" (stylized as "SHOCK!") is the eleventh major single by Japanese idol pop group Cute. It was released on January 6, 2010, in both normal and limited editions, the limited edition containing a
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 0x301901bd2d718355dfb382392de1364a95aecdd7443b73a087c4797036d4384e. Chain 2 (Bitcoin): anchored in block 954346 (2026-06-19T03:51:26Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9a98ed61-99d4-4976-87b0-8fff4e5d0547.json and https://artists.proofprofile.net/proofs/artist/9a98ed61-99d4-4976-87b0-8fff4e5d0547.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).