Su Zhu, a co-founder of the collapsed crypto hedge fund Three Arrows Capital, said Thursday that a waitlist is now open at a new marketplace called OPNX for trading claims and derivatives related to funds stuck on failed exchanges.

Zhu said the platform had resulted from talks he held with Mark Lamb, the co-founder and CEO of Coinflex, which The Block first reported last month was looking to raise funds for the new exchange.

The platform will use the FLEX token, Zhu said.

OPNX presently welcomes users to join a waitlist under a banner that reads "Do you have money stuck on a crypto platform?" A manifesto posted on the site says that a $20 billion market of claimants involving  FTX, Voyager, Celsius, Genesis, BlockFi, Mt Gox, among others, is "desperately looking for a solution."