Re: [bitcoindev] Proposal for Quantum-Resistant Address Migration Protocol (QRAMP) BIP

[Dustin Ray <dustinvonsandwich@gmail.com>]

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Right off the bat I notice you are proposing that legacy funds become
unspendable after a certain block height which immediately raises serious
problems. A migration to quantum hard addresses in this manner would cause
serious financial damage to anyone holding legacy funds, if I understand
your proposal correctly.

On Tue, Feb 11, 2025 at 4:10 PM Agustin Cruz <agustin.cruz@gmail.com> wrote:

> Dear Bitcoin Developers,
>
> I am writing to share my proposal for a new Bitcoin Improvement Proposal
> (BIP) titled *Quantum-Resistant Address Migration Protocol (QRAMP)*. The
> goal of this proposal is to safeguard Bitcoin against potential future
> quantum attacks by enforcing a mandatory migration period for funds held in
> legacy Bitcoin addresses (secured by ECDSA) to quantum-resistant addresses.
>
> The proposal outlines:
>
>    - *Reducing Vulnerabilities:* Transitioning funds to quantum-resistant
>    schemes preemptively to eliminate the risk posed by quantum attacks on
>    exposed public keys.
>    - *Enforcing Timelines:* A hard migration deadline that forces timely
>    action, rather than relying on a gradual, voluntary migration that might
>    leave many users at risk.
>    - *Balancing Risks:* Weighing the non-trivial risk of funds being
>    permanently locked against the potential catastrophic impact of a quantum
>    attack on Bitcoin’s security.
>
> Additionally, the proposal addresses common criticisms such as the risk of
> permanent fund loss, uncertain quantum timelines, and the potential for
> chain splits. It also details backwards compatibility measures,
> comprehensive security considerations, an extensive suite of test cases,
> and a reference implementation plan that includes script interpreter
> changes, wallet software updates, and network monitoring tools.
>
> For your convenience, I have published the full proposal on my GitHub
> repository. You can review it at the following link:
>
> Quantum-Resistant Address Migration Protocol (QRAMP) Proposal on GitHub
> <https://github.com/chucrut/bips/blob/master/bip-xxxxx.md>
>
> I welcome your feedback and suggestions and look forward to engaging in a
> constructive discussion on how best to enhance the security and resilience
> of the Bitcoin network in the quantum computing era.
>
> Thank you for your time and consideration.
>
> Best regards,
>
> Agustin Cruz
>
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