Subject: [bitcoindev] Proposal for Quantum-Resistant Cryptography in Bitcoin - BIP Submission

From: Agustin Cruz <[email-masked]>
Date: Thu, 17 Oct 2024 19:54:11 -0300

Dear Bitcoin Developers,
I would like to propose a Bitcoin Improvement Proposal (BIP) that aims to
introduce quantum-resistant cryptography to the Bitcoin protocol. With the
rapid advancement in quantum computing, this proposal outlines the
integration of post-quantum cryptographic algorithms (SPHINCS+ and
Dilithium) to safeguard Bitcoin’s long-term security.

The key points of the proposal are:
- Introduction of quantum-resistant signature algorithms (SPHINCS+ and
Dilithium).
- New Bech32-based address formats for quantum-resistant addresses.
- Modifications to transaction structures and script opcodes to support
larger signature sizes.
- A transition mechanism through a soft fork to ensure backward
compatibility with existing Bitcoin addresses and transactions.

The full BIP draft is available here
https://github.com/chucrut/bips/blob/master/bip-xxxx.md for your review and
feedback. I look forward to the community's input and am open to
suggestions on how to improve the proposal.

Best regards,
Agustín Cruz

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