TechFlame News — Paradigm researcher Dan Robinson has proposed a new scheme called PACT (Verifiable Address Control Timestamp), aimed at protecting long-dormant Bitcoin holdings—including Satoshi Nakamoto's early addresses—from future quantum computing attacks.

The mechanism allows users to prove their control over an address via timestamps without needing to transfer assets or expose on-chain activity. In the event of a future quantum attack, users could rely on this proof to recover assets on a quantum-resistant version of the Bitcoin network.

Compared to mandatory migration schemes such as BIP-361, PACT avoids the privacy exposure issues caused by actively moving assets, offering long-term holders a more flexible preemptive protection pathway.