KrisFlyer to launch world’s first blockchain-based airline loyalty digital wallet — Singapore Airlines — “The SIA Group’s KrisFlyer frequent-flyer programme is to launch a world-first blockchain-based airline loyalty digital wallet capability that will help unlock the value of KrisFlyer miles to enable everyday spending at retail partners… It will allow the extensive KrisFlyer membership base to use ‘digital KrisFlyer miles’ for point-of-sale transactions at participating retail merchants.”