The Chinese authorities are mulling whether to introduce third-party custodian services to oversee the world’s largest bitcoin market, after its rapid expansion and a recent sharp price fall highlighted the potential threat it poses to the stability of financial markets."Regulators have noticed that some bitcoin platforms crashed during the recent market volatilities, causing some investors, particularly those trading with leverage tools, to bear huge losses because they were unable to log on to the website during the sell-off," the official China Securities Journal (CSJ) reported on Tuesday morning.The newspaper said that the regulators are discussing with industry insiders the possibility of improving trading security by setting up third-party custodian platforms for the bitcoin market.