  In this work, we present our early stage results on a Conflicts Check
Protocol (CCP) that enables preventing potential attacks on bitcoin system.
Based on the observation and discovery of a common symptom that many attacks
may generate, CCP refines the current bitcoin systems by proposing a novel
arbitration mechanism that is capable to determine the approval or abandon of
certain transactions involved in confliction. This work examines the security
issue of bitcoin from a new perspective, which may extend to a larger scope of
attack analysis and prevention
