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PACTs: Protecting Your Bitcoin From a Quantum Sunset - Paradigm

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A possible way for Bitcoin holders to protect themselves from having their funds frozen in an emergency post-quantum hard fork—without having to publicly move their coins.

PACTs: Protecting Your Bitcoin From a Quantum Sunset - Paradigm Research PACTs: Protecting Your Bitcoin From a Quantum Sunset 05.01.2026 | Dan Robinson An attacker with a powerful enough quantum computer could steal hundreds of billions of dollars of Bitcoin. To prevent that, the Bitcoin community may someday choose to upgrade the protocol to sunset the ability to spend from addresses with exposed public keys. Such an upgrade would be controversial, in part because Bitcoin values the rights of dormant holders—including Satoshi Nakamoto himself, who is estimated to hold around $75 billion of Bi

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