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NKN Testnet Preview: http://preview.nkn.org/ Preface In the recently concluded DoraHacks “Blockchain For Future” hackathon, the first and third winners used NKN’s just-released SDK! To our surprise, 9-year-old girl, Shiry Sree Ju, and her father won the first place with her gun management and personal information security monitoring system based on the NKN testnet. The purpose […]