---
title: 耐量子署名 day-1 統合の経済学(FIPS 205 SLH-DSA · Circle Arc の day-1 PQ)
aliases: [post-quantum blockchain, SLH-DSA-SHA2-128s, FIPS 205, Arc PQ signature]
domain: systems
kind: knowledge
topic: post-quantum-blockchain-day1-integration
created: 2026-05-13
last_updated: 2026-05-26
last_tended: 2026-06-24
review_by: 2026-09-22
confidence: likely
tags: [systems, blockchain, post-quantum, cryptography, FIPS-205]
status: active
sources:
  - https://csrc.nist.gov/pubs/fips/205/final
  - https://www.circle.com/blog/preparing-blockchains-for-q-day
  - https://www.arc.io/
---

# 耐量子署名 day-1 統合の経済学


## Wiki route

This entry sits under [[systems/INDEX|systems index]]. Read it against [[systems/threshold-bft-consensus-rust-implementations|Threshold BFT コンセンサス Rust 化の潮流(Tempo Simplex / Arc Malachite)]] for peer / contrast context and [[fintech/INDEX|fintech index]] for the broader system / regulatory boundary.

## Related
<!-- wiki-links:managed -->
- [[INDEX|Wiki Index]]
- [[systems/threshold-bft-consensus-rust-implementations|Threshold BFT コンセンサス Rust 化]]
<!-- /wiki-links:managed -->

## Sources

- NIST FIPS 205: Stateless Hash-Based Digital Signature Standard（SLH-DSA）— https://csrc.nist.gov/pubs/fips/205/final
- Circle「Preparing Blockchains for Q-Day」（Arc の day-1 耐量子 / SLH-DSA-SHA2-128s 言及）— https://www.circle.com/blog/preparing-blockchains-for-q-day
- Arc 公式サイト（Circle 機関級 L1）— https://www.arc.io/