Cypherpunk Jameson Lopp and 5 co-authors from the Bitcoin quantum safety area have proposed freezing quantum-vulnerable cash on the Bitcoin community, together with Satoshi’s $74 billion stash, to stop them from being stolen as soon as quantum computer systems turn out to be accessible.
The transfer is the second a part of a three-stage proposal underneath BIP-361 referred to as the “Submit Quantum Migration and Legacy Signature Sundown,” which was posted as a draft to GitHub on Tuesday.
It addresses a significant danger to Bitcoin — the potential use of quantum computer systems to steal roughly 1.7 million $BTC locked in early P2PK addresses, together with Satoshi’s stash, which aren’t quantum-proof.
Within the improper fingers, these cash may considerably undermine the worth of the community.
Three phases to quantum safety
BIP-361 builds on BIP-360, launched in February, which proposed a delicate fork for a brand new output sort referred to as pay-to-Merkle-root (P2MR). It really works equally to Bitcoin’s present Taproot (P2TR) addresses however with the quantum-vulnerable key path eliminated.
Whereas BIP-360 protects new cash going ahead, it doesn’t deal with the roughly 34% of the availability that is still weak until it’s transferred to new addresses.
BIP-361 proposes that three years after activation, part A of the proposal would stop any new $BTC from being despatched to old-style addresses, with all customers on quantum-resistant deal with varieties.
The second part (B) would invalidate old-style signatures and any Bitcoin nonetheless sitting in weak addresses turns into successfully frozen 5 years after activation.
Part C supplies a possible rescue mechanism utilizing zero-knowledge proofs, permitting individuals who missed the deadline however nonetheless have their seed phrase to recuperate frozen funds.
The authors described it as a “personal incentive to improve” as a result of misplaced or frozen cash solely make everybody else’s cash price barely extra, whereas quantum-recovered cash make everybody else’s price much less.
“This isn’t an offensive assault, slightly, it’s defensive: our thesis is that the Bitcoin ecosystem needs to defend itself and its pursuits in opposition to those that would favor to do nothing and permit a malicious actor to destroy each worth and belief.”
Bitcoin neighborhood pushes again
Nevertheless, the proposal would render some present UTXOs unspendable by their house owners in the event that they fail to improve, which some have seen as a big philosophical departure from Bitcoin’s ethos.
Bitcoin protocol developer and researcher Mark Erhardt, who shared BIP-361 on X on Tuesday, was met with neighborhood pushback and feedback similar to “this quantum proposal is very authoritarian and confiscatory … there isn’t any good rationale for forcing the improve and rendering previous spends invalid.”
Bitcoin Journal editor Brian Trollz rejected the proposal outright, TFTC founder Marty Bent referred to as it “laughable,” and Phil Geiger, head of enterprise growth at Metaplanet, quipped, “We have now to steal folks’s cash to stop their cash from being stolen.”
Cointelegraph reached out to Lopp for feedback, however didn’t get a right away response.
