Coincheck is a bitcoin wallet and exchange service headquartered te Tokyo, Japan, founded by Koichiro Wada and Yusuke Otsuka. It operates exchanges inbetween bitcoin/ether and fiat currencies ter Japan, and bitcoin transactions and storage ter some countries worldwide.  [Two] [Trio] Te April 2018, Coincheck wasgoed acquired by Monex Group for Trio.6 billion yen. [Four]
Coincheck commenced ter August 2014 and is operated by Coincheck, inc. (previously ResuPress, inc) (founded te 2012). Spil of August 2018, the exchange had overheen $160 million transactions vanaf month. [Five]   There were then more than Two,200 merchants using their bitcoin payment solution, just te Japan.  Coincheck is a member of JBA (Japan Blockchain Association)  and is actively helping to build the Japanese bitcoin community’s usage standards with the government.
Te March 2018, the entertainment company DMM.com with a user-base of more than Nineteen million determined to use Coincheck’s bitcoin payment processing solution. [Ten] Coincheck also partnered with SEKAI to support Chinese, Hong Kong, and Taiwan investors to buy Japanese real estate with bitcoin.   The company also supports the buying and selling of ether,  DAO,   LISK,   and Ethereum Classic. [Legitimate]
2018 hacking incident Edit
Te January 2018, Coincheck wasgoed hacked into and approximately 500 million NEM tokens were exfiltrated, amounting to about ?58 billion (or ?280 million) stolen. [Nineteen] The currency wasgoed transferred through a total of nineteen accounts, one of which wasgoed found to have no connection with the hacker. 
The hack led two of Japan’s crypto-currency trade groups to merge into a fresh self-regulatory organization.  The Financial Services Agency took administrative activity by ordering Coincheck to improve its security practices,  but did not order the exchange to shut down out of a concern for the protection of its users.  Coincheck originally announced that it may not be able to compensate all users affected by the hack,  but then announced that it would repay all 260,000 users affected te Japanese yen using its own capital. 
The hack only involved NEM. Because the security breach wasgoed caused by the lack of strong security measures of Coincheck, the NEM development team refused to conduct a hard fork. Instead NEM is creating an automated tagging system. This automated system will go after the money and tag any account that receives tainted money.