https://www.reuters.com/article/us-crypto-currencies-japan-lawsuit/coincheck-hit-by-lawsuit-as-investors-seek-restart-of-cryptocurrency-withdrawals-idUSKCN1FZ0GR >Cryptocurrency investors launched a lawsuit against Coincheck Inc on Thursday, seeking to force the Tokyo-based exchange to allow them to withdraw assets worth $183,000 frozen after last month's $530 million heist of digital money.