Emma Wu Ying-chieh (; born 11 August 1989), also known as Gui Gui (), is a Taiwanese singer and actress. Early life Wu Ying-chieh, nicknamed Gui Gui, was born in Keelung City, Taiwan on 11 August 198
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 0xbf5f29bc0367f4f79f447fe65f5a94c54d011a6c5f6c2605c7ac5cc6f2ba1a7c. Chain 2 (Bitcoin): anchored in block 953996 (2026-06-16T20:04:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2e9ad023-8599-4859-9313-cbb51fe25e91.json and https://artists.proofprofile.net/proofs/artist/2e9ad023-8599-4859-9313-cbb51fe25e91.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).