Propose three-phase strategy to secure 1.7 million BTC, including Satoshi's stash, against quantum threats. Activate BIP-361 for safer transactions.
Proposal to Secure Bitcoin Against Quantum Threats
Cypherpunk Jameson Lopp and five co-authors from the Bitcoin quantum security space have proposed a three-phase strategy under BIP-361, titled “Post Quantum Migration and Legacy Signature Sunset,” to address the potential risks posed by quantum computers. The proposal aims to protect around 1.7 million BTC, including Satoshi Nakamoto’s stash worth approximately $74 billion, from quantum attacks.
Three Phased Approach
The plan involves three distinct phases:
- **Phase A:** After a three-year period following activation, no new Bitcoin can be sent to old-style addresses. All users will be required to transition to quantum-resistant address types.
- **Phase B:** Five years after activation, old-style signatures become invalid, effectively freezing any Bitcoin still residing in vulnerable addresses.
- **Phase C:** Provides a potential rescue mechanism using zero-knowledge proofs (ZKPs), allowing individuals who missed the deadline but retain their seed phrase to recover frozen funds.
Addressing Security Concerns
BIP-361 is designed as a "private incentive" for upgrades, noting that lost or frozen coins only slightly increase the value of others' assets, whereas quantum-recovered coins would decrease overall network value. The authors argue that this approach serves a defensive purpose to protect against malicious actors who might undermine trust and value.
Community Response
The proposal has faced significant opposition within the Bitcoin community. Critics argue it represents a substantial philosophical shift from Bitcoin’s ethos of voluntary participation. Mark Erhardt, a Bitcoin protocol developer, received backlash on X (formerly Twitter), with comments such as "this quantum proposal is highly authoritarian and confiscatory."
Bitcoin Magazine editor Brian Trollz dismissed the idea outright, while Marty Bent, founder of TFTC, called it "laughable." Phil Geiger from Metaplanet quipped, “We have to steal people’s money to prevent their money from being stolen,” highlighting the controversial nature of the proposal.
Ongoing Debate
The debate around quantum security in Bitcoin continues to evolve. While BIP-361 aims to enhance network resilience against potential threats, the community remains divided on the approach and its implications for existing users.
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