According to Forbes, Singapore-based Bitfufu, backed by Chinese mining rig giant Bitmain, has filed claims for $11.7 million against crypto exchange FTX, which has revealed it owes more than $3 billion to its largest creditors as its bankruptcy process gets under way. The claims were submitted by Bitfufu’s subsidiary Ethereal Tech last week, according to Kroll, a U.S. restructuring administration firm appointed by FTX. The company is among 13 unsecured creditors that has so far handed in claims against FTX.