According to Paradigm researcher Dan Robinson, a new proposal called Provable Address-Control Timestamps (PACTs) aims to protect dormant bitcoins, including those belonging to network creator Satoshi Nakamoto, from future quantum computing threats. The model allows BTC holders to prove they controlled a wallet before quantum advances could derive private keys, creating an on-chain ownership record that could later be unlocked on a quantum-resistant Bitcoin version. Unlike other proposals such as BIP-361, which require a migration window before legacy signatures sunset, PACTs avoids revealing dormant holders’ continued activity by enabling proof of ownership without broadcasting it on-chain. Robinson noted the approach does not require Bitcoin to decide today on a sunset timeline, allowing users to prepare early.
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