Paradigm researcher proposes timestamp 'escape hatch' to protect Satoshi-era bitcoin from quantum threats Quick Take - PACTs would let long-term bitcoin holders prepare for a worst-case quantum scenario without moving funds or signaling activity onchain. - Competing proposals like BIP-361 would look to force upgrades over the span of a few years. We'd love your feedback. A Paradigm researcher outlined a new model he says could protect dormant bitcoins, including those belonging to the network's creator, Satoshi Nakamoto, from a future quantum computing threat. The proposal from Dan Robinson introduces what he calls "Provable Address-Control Timestamps," shortened to PACTs. It would create a way for bitcoin (BTC) holders to prove they controlled a wallet before quantum computing advances to the point of being capable of deriving the wallet's private keys — if that day ever comes. The model uses a timestamping system that is already part of a blockchain's basic functionality. Holders would essentially generate a proof that they control their bitcoin and timestamp it on the blockchain, creating a record of ownership in the event of a future quantum attack. That proof could then later be unlocked, allowing users to reclaim their funds on a future quantum-resistant version of Bitcoin. It is a potential workaround for a major issue in the quantum bitcoin debate: how to protect the ownership and privacy of long-dormant bitcoin addresses. Under other similar proposals, like BIP-361 by Casa's chief security officer Jameson Lopp, and others, there would be a multi-year migration window for wallets, exchanges, and custodians to upgrade to quantum-resistant technology, before "sunsetting" legacy signatures. After that period, any coins that failed to migrate would be rendered unspendable. But this creates a separate set of problems for dormant holders. Moving funds would reveal that the owner is still active and could potentially link