Proof-of-Stake

Cardano's blockchain faced a temporary chain split on November 22-23, 2025, triggered by an AI-related node bug, but recovered swiftly without halting transactions or losing funds. Solana co-founder Anatoly Yakovenko commended the network's proof-of-stake stability, highlighting the challenges of securing such systems without proof-of-work. The incident underscored a decade of formal methods in Cardano's engineering.