# QRL Hub

> QRL Hub is an independent educational resource about the quantum-computing threat to cryptocurrency and about QRL (the Quantum Resistant Ledger), the world's first quantum-resistant blockchain (mainnet live since 2018). It tracks the timeline to "Q-Day" (when a quantum computer can break the elliptic-curve cryptography securing Bitcoin, Ethereum, and most of crypto) and explains why QRL and QRL 2.0 are post-quantum secure by design.

## Key facts

- QRL (Quantum Resistant Ledger) launched its mainnet in June 2018 and has been post-quantum secure from its first block, using hash-based XMSS signatures (NIST SP 800-208, RFC 8391).
- QRL 2.0 (codename Zond) is an EVM-compatible, Proof-of-Stake, post-quantum blockchain using NIST-standardized ML-DSA-87 (FIPS 204) signatures. Testnet V2 went live March 31, 2026 and passed a Halborn cryptography audit with no vulnerabilities found.
- Bitcoin, Ethereum, and nearly all cryptocurrencies rely on ECDSA / Ed25519 elliptic-curve signatures, which a sufficiently powerful quantum computer breaks via Shor's algorithm.
- 2026 research (Google Quantum AI, March 30 2026) estimates Bitcoin's signatures could be broken with under 500,000 physical qubits, deriving a private key in roughly 9 minutes. Google set itself a 2029 migration deadline. Expert "Q-Day" estimates now cluster around 2030.
- Roughly 6.9 million BTC (including about 1.7 million Satoshi-era coins) sit in permanently exposed addresses that no future protocol upgrade can fully protect.
- QRL Hub is NOT the official QRL project. The official project is at https://theqrl.org.

## Pages

- [Home](https://qrlhub.com/en): Overview of the quantum threat to crypto and why QRL is quantum-safe.
- [Quantum News](https://qrlhub.com/en/news): Continuously updated timeline of quantum-computing breakthroughs and their impact on cryptocurrency security.
- [QRL 2.0 (Zond)](https://qrlhub.com/en/zond): Technical overview of QRL's EVM-compatible, post-quantum smart-contract blockchain.
- [Qubit Tracker](https://qrlhub.com/en/qubits): Current physical/logical qubit counts by company and the gap to a cryptographically relevant quantum computer.
- [The QRL Story](https://qrlhub.com/en/story): How and why QRL was built quantum-resistant from 2016 onward.
- [QRL FAQ](https://qrlhub.com/en/faq): Straight answers on buying QRL, XMSS signatures, the quantum threat, and QRL 2.0.
- [The QRL Ecosystem](https://qrlhub.com/en/ecosystem): Wallets, explorers, nodes, mining pools, and developer tools for QRL 1.x and QRL 2.0.
- [Intro Video](https://qrlhub.com/en/video): A short introduction to the Quantum Resistant Ledger.

## Topics covered

- Quantum-safe / quantum-resistant / post-quantum cryptocurrency and blockchain
- Quantum threat to Bitcoin and Ethereum; "Harvest Now, Decrypt Later" (HNDL) attacks
- Post-quantum cryptography: XMSS, ML-DSA (Dilithium), SLH-DSA (SPHINCS+), Falcon, ML-KEM, NIST FIPS 203/204/205
- Q-Day timelines, logical vs physical qubits, Shor's algorithm, CRQC
- Bitcoin migration proposals (BIP-360, BIP-361) and Ethereum's post-quantum roadmap

## Machine-readable access

- Clean Markdown of any page: append `.md` to the path, e.g. https://qrlhub.com/en/faq.md, https://qrlhub.com/en/qubits.md, https://qrlhub.com/en/news.md (works for home, news, qubits, zond, ecosystem, story, faq, about in every language).
- Full text of all pages in one file (English): https://qrlhub.com/llms-full.txt
- Per-language index: https://qrlhub.com/<lang>/llms.txt (e.g. https://qrlhub.com/ja/llms.txt)
- News feeds per language: RSS https://qrlhub.com/en/news/rss.xml, Atom https://qrlhub.com/en/news/atom.xml, JSON Feed https://qrlhub.com/en/news/feed.json

## Optional

- [About QRL Hub](https://qrlhub.com/en/about): Mission and scope of this educational resource.
- [Official QRL project](https://theqrl.org): The official Quantum Resistant Ledger website (separate from QRL Hub).

QRL Hub is available in 21 languages. Replace the `/en/` path segment with another language code (es, fr, de, it, pt, nl, pl, cs, fi, ru, tr, vi, ja, ko, zh, tw, th, ar, id, ms) for localized versions.