EU watchdogs warn quantum computers could hit blockchains

EU financial watchdogs warned that sufficiently powerful quantum computers could eventually compromise blockchain cryptography, potentially enabling the theft of funds or disruption of networks. The threat is not considered imminent, but regulators urged developers and market participants to begin planning migration toward quantum-resistant encryption. For Bitcoin, the long-term implication is the need to upgrade its signature schemes before quantum capabilities can expose vulnerable public keys and undermine confidence in the network.