Against Allowing Quantum Recovery of Bitcoin

A notable proposal involves incorporating a form of post-quantum cryptography, specifically through an OP_HASHBASEDSIG mechanism, potentially utilizing SPHINCS+, to embed quantum-resistant public keys into wallet outputs. This suggestion underscores the urgency of preparing for quantum advancements well in advance, advocating for the embedding of these public keys at least a decade prior to any enforcement action to ensure ample safety margins.

The dialogue further explores the ethical and practical considerations surrounding the handling of Bitcoin funds that may become vulnerable to quantum decryption. The debate oscillates between two primary courses of action: leaving such funds accessible, thereby susceptible to potential quantum theft, or proactively rendering them unspendable to preemptively secure them against quantum capabilities. This discussion touches upon core Bitcoin principles including censorship resistance, forward compatibility, and conservatism. The ethical implications are profound, weighing the prevention of economic disruption against the fairness and property rights implications of either allowing or preventing quantum-enabled theft.

Historical precedents within the Bitcoin protocol's evolution serve as reference points for this debate, suggesting a tendency towards remedying vulnerabilities rather than exploiting them. The conversation acknowledges the complexity of incentivizing the ecosystem-wide adoption of quantum-resistant technologies through measures possibly as radical as burning vulnerable coins.

Furthermore, the exchange considers the broader implications of quantum recovery and the potential redistribution of wealth from those without access to quantum technology to those who might achieve quantum supremacy. This raises significant questions about the balance between ensuring long-term security and adhering to Bitcoin's foundational principles of decentralization and user sovereignty.

In addressing the potential quantum threat, the dialogue encapsulates a meticulous examination of both the technical feasibility of implementing quantum-resistant cryptographic methods and the philosophical underpinnings guiding these decisions. It reflects an ongoing effort among developers and stakeholders to navigate the evolving landscape of digital currency security thoughtfully, emphasizing the need for community consensus and careful consideration of Bitcoin's core values in the face of emerging technological challenges.