Crypto Exchange FCoin Insolvent After Revealing Up to $130M Bitcoin Shortfall

FCoin, a crypto exchange that adopted the controversial "Trans-fee mining" model, has paused trading and withdrawal as it reveals a shortage of crypto assets worth up to $130 million.

Zhang Jian, the former Huobi CTO who launched FCoin in May 2018, wrote a lengthy post on Monday, saying the exchange is now unable to process users' withdrawal demands as its asset reserve has fallen short of its liability - and the gap is estimated to be about 7,000 to 13,000 bitcoin.

The post, first published in Chinese and later translated on Reddit, comes as a shocking notice to users in China as the significant amount of assets in question led to the insolvency of the controversial model that at one point made FCoin one of the largest exchanges by trading volume.

Zhang claimed in the post that the exchange was neither hacked nor an exit scam but the problem is "a little too complicated to be explained in a single sentence."

Fcoin went live around May 2018, introducing a novel model called "Trans-fee mining" to incentivize trading and to issue its exchange token dubbed FT.Instead of launching an initial coin offering or an airdrop, FCoin issued 51 percent of its FTs to the public in exchange for making transactions.

For every transaction fee a user paid to FCoin in the form of either bitcoin or ethereum, the platform would reimburse the user 100 percent of the value in FTs.In addition, FCoin would distribute 80 percent of the transaction fees it collected in bitcoin and ether to users who held FTs bitcoin continuously throughout a day.

According to Zhang, errors in FCoin's system started to give away more mining rewards to users than they should have earned, beginning in mid-2018.

Zhang said the system problem coped with these "Decision errors" gave a large amount of users the opportunity to sell and withdraw more than what should have been on their account balance, causing the significant loss of FCoin's assets on its own balance sheet.

The announcement came just days FCoin suspended its entire platform after discovering a risk-control issue.

Zhang said in the post that he will now personally and manually process users' withdrawal requests made via emails.