A group of Bitcoin developers has put forward a new recovery tool designed to protect wallets from quantum attacks. The proposal, which uses zero-knowledge proofs in a commit/reveal scheme, aims to let users move funds out of vulnerable addresses before a quantum computer can crack the private key. Notably, the tool would also apply to Satoshi Nakamoto's 1.1 million Bitcoin — a stash that has sat untouched for over a decade.
Why quantum attacks threaten Bitcoin
Quantum computers, once powerful enough, could break the elliptic curve cryptography that secures Bitcoin addresses. That would let an attacker derive a private key from a public key, then drain the wallet. The threat is still theoretical, but developers have been working on countermeasures for years. This proposal is one of the first to offer a practical recovery path for existing coins.
How the commit/reveal tool works
The mechanism relies on zero-knowledge proofs. A wallet owner first commits to a new address without revealing it, then later reveals the address and moves the coins. The commit step locks the old address in a kind of escrow, while the reveal step lets the network verify the move without exposing the private key. The idea is to give users a window to act before a quantum attacker can exploit a public key.
The Satoshi factor
Because the tool targets all addresses that have ever exposed a public key — which includes the earliest mined blocks — Satoshi Nakamoto's 1.1 million BTC would be affected. The proposal doesn't address who would authorize a move of those coins, or whether the tool could be used without the original private key. That question is left open, and it's already stirring debate in developer forums.
The commit/reveal scheme is still a draft. It needs to be reviewed by the broader developer community, tested, and eventually merged into a Bitcoin Improvement Proposal. No timeline has been set. For now, the conversation is about whether the tool strikes the right balance between security and complexity — and what happens to coins whose owners can't or won't use it.
