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