Bitcoin Core 30.0–30.1 wallet bug risks fund loss; 30.2 coming after Jan. 1 release
Bitcoin Core developers released version 30.1 on Jan. 1 and, on Monday, disclosed a migration bug affecting 30.0 and 30.1 that can delete wallet directories during legacy upgrades. Developers pulled both binaries and advised against using migration tools until 30.2 is available; Coin Dance reports Bitcoin Core powers about 78% of reachable nodes.