Bitcoin quantum proposal offers Satoshi Nakamoto a way to prove control without moving BTC
Paradigm has proposed a PACT method allowing Bitcoin holders to prove key ownership against quantum threats without moving their coins.Summary
Venture fund Paradigm has introduced a proposal called Provable Address-Control Timestamps (PACTs) to address concerns regarding quantum computing threats to legacy Bitcoin wallets, including those linked to Satoshi Nakamoto. Current proposals, such as BIP-361, suggest freezing vulnerable addresses, which would force dormant holders to expose their identity or lose their assets. PACTs offer a privacy-preserving alternative by allowing users to create off-chain cryptographic commitments that verify ownership prior to the emergence of quantum hardware. If the Bitcoin network eventually implements a soft fork involving zero-knowledge STARK proofs, holders could use these commitments to recover or move their funds securely. However, the proposal requires significant network upgrades and relies on the original key owner proactively creating the commitment before quantum threats materialize.
(Source：CoinDesk)