Cypherpunk Jameson Lopp and 5 co-authors from the Bitcoin quantum safety house 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 change into accessible.
The transfer is the second a part of a three-stage proposal beneath BIP-361 known as the “Publish Quantum Migration and Legacy Signature Sundown,” which was posted as a draft to GitHub on Tuesday.
It addresses a significant threat 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 fallacious fingers, these cash might considerably undermine the worth of the community.
Three phases to quantum safety
BIP-361 builds on BIP-360, launched in February, which proposed a gentle fork for a brand new output sort known 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 handle the roughly 34% of the availability that is still susceptible except it’s transferred to new addresses.
BIP-361 proposes that three years after activation, section A of the proposal would stop any new $BTC from being despatched to old-style addresses, with all customers on quantum-resistant handle varieties.
The second section (B) would invalidate old-style signatures and any Bitcoin nonetheless sitting in susceptible addresses turns into successfully frozen 5 years after activation.
Section C supplies a possible rescue mechanism utilizing zero-knowledge proofs, permitting individuals who missed the deadline however nonetheless have their seed phrase to get well 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, fairly, it’s defensive: our thesis is that the Bitcoin ecosystem needs to defend itself and its pursuits towards those that would like to do nothing and permit a malicious actor to destroy each worth and belief.”
Bitcoin group pushes again
Nevertheless, the proposal would render some present UTXOs unspendable by their homeowners in the event that they fail to improve, which some have seen as a major philosophical departure from Bitcoin’s ethos.
Bitcoin protocol developer and researcher Mark Erhardt, who shared BIP-361 on X on Tuesday, was met with group pushback and feedback comparable to “this quantum proposal is very authoritarian and confiscatory … there is no such thing as a good rationale for forcing the improve and rendering outdated spends invalid.”
Bitcoin Journal editor Brian Trollz rejected the proposal outright, TFTC founder Marty Bent known as it “laughable,” and Phil Geiger, head of enterprise growth at Metaplanet, quipped, “We’ve got to steal folks’s cash to stop their cash from being stolen.”
Cointelegraph reached out to Lopp for feedback, however didn’t get a direct response.
