Two mining pools controlling most of Ravencoin’s hashpower are building a replacement chain from before Friday’s first invalid block, putting deposits, withdrawals and payments made since then at risk of reversal.

Two mining pools controlling most of Ravencoin’s hashpower are building a replacement chain from before Friday’s first invalid block, putting deposits, withdrawals and payments…

Ravencoin developers said Tuesday the blockchain may erase several days of transactions after attackers exploited a flaw.