# Ethereum (ETH) Quantum Readiness Report

> Ethereum has a QRI score of 16.75/100 and is assessed at Stage 2 (Mitigation / Development) with medium evidence confidence.

Evaluation date: 2026-08-19. Review status: draft. Evaluated scope: Ethereum L1.

Ethereum has a comprehensive public cryptographic inventory and a detailed post-quantum roadmap, but no production quantum-safe protection. Spend authorization (ECDSA), consensus (BLS), and data availability commitments (KZG) remain entirely quantum-vulnerable. Migration has not started; no value is protected. The project is in active research and devnet phase (Stage 2, Mitigation/Development).

## Core resources

- [Ethereum QRI report](https://qrindex.org/projects/ethereum/): Human-readable assessment with score, stage, evidence, blockers, risks, and assurance notes.
- [Ethereum structured report data](https://qrindex.org/projects/ethereum/report.json): Complete report as JSON for deterministic machine processing.
- [QRI methodology](https://qrindex.org/methodology/): Scoring model, evidence handling, readiness stages, confidence, assurance, and report status.
- [All QRI project reports](https://qrindex.org/llms.txt): Score-ranked index of every published project assessment.
- [Ethereum official website](https://ethereum.org): Project-maintained website.
- [Ethereum source repository 1](https://github.com/ethereum): Project source code referenced by QRI.



## Evidence sources

- [Evidence source 1](<https://ethereum.org/roadmap/security/quantum-resistance>): Public source cited by the Ethereum QRI assessment.
- [Evidence source 2](<https://pq.ethereum.org/>): Public source cited by the Ethereum QRI assessment.
- [Evidence source 3](<https://ethereum.org/>): Public source cited by the Ethereum QRI assessment.
- [Evidence source 4](<https://github.com/ethereum>): Public source cited by the Ethereum QRI assessment.