EU financial watchdogs warn quantum computing poses imminent threat to blockchain encryption
The warning brings renewed urgency to the debate over how bitcoin should deal with legacy addresses whose public keys are already exposed onchain.
Source: CoinDesk
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DW NOTE
The EU is flagging a quantum threat to 6.9 million BTC worth $586 billion — coins stored in legacy addresses whose public keys are already visible onchain. The concern is not that quantum computers will become commercially viable, but that a state actor could build one capable of breaking Bitcoin's cryptography before anyone notices, turning visible public keys into derivable private keys and moving coins before their owners can.