dYdX Chain Resumes After 9-Hour Outage Due to Upgrade Bug

The dYdX Chain, the underlying blockchain for the dYdX perpetual futures exchange, experienced a significant outage early Monday. The disruption, lasting for over nine hours, was attributed to a scheduled upgrade to version 4 of the chain. The upgrade process encountered a hiccup, leading to an unexpected halt in operations. This was due to the incorrect implementation of a bug fix from the Cosmos IAVL library. This caused network state corruption during the upgrade, as explained by Dimitar Petkov, dYdX’s DeFi technical project lead.