
Ravencoin could undergo a blockchain reorganization that rolls back roughly three days of transactions if a chain being built by mining pools 2Miners and RavenMiner becomes dominant after a critical consensus vulnerability was exploited on the network.
2Miners and RavenMiner are building a chain that excludes the affected branch. A reorganization would occur if that chain becomes dominant.
Ravencoin has asked exchanges to temporarily halt RVN deposits and withdrawals, with transactions recorded after block 4,487,775 considered potentially reversible.
The project identified block 4,487,776 as the first known invalid block, saying the vulnerability caused some network nodes to accept invalid blocks.
RVN was down 1.7% at $0.003491 following the disclosure.
Source: Ravencoin