Digital currency exchange operator Coincheck Inc. resumed on Tuesday yen withdrawals for its users following weeks of suspension triggered by a massive cryptocurrency theft, while submitting to regulators a report vowing to improve its security system.The Tokyo-based company, which has been under fire following the theft of 58 billion yen ($540 million) worth of NEM currency, said it completed the same day the transfer of around 40.1 billion yen, responding to withdrawal requests made by Sunday afternoon."We're making progress step by step," Yusuke Otsuka, an executive of Coincheck, told re…READ FULL ARTICLE