# Optimism (OP) Quantum Readiness Report

> Optimism has a QRI score of 5.25/100 and is assessed at Stage 1 (Quantum Risk Assessed) with medium evidence confidence.

Evaluation date: 2026-06-18. Review status: draft. Evaluated scope: OP Mainnet native L2 rollup, OP Stack, L1 bridge dependency, sequencer infrastructure.

Optimism (OP Mainnet) is a Stage 1 (Quantum Risk Assessed) Ethereum L2 optimistic rollup with a comprehensive post-quantum roadmap published January 14, 2026, but zero production PQ cryptographic protection as of June 2026. All spend authorization (EOAs), sequencer block signing, batch submission, L1 bridge escrow, Security Council multisig, and P2P identity remain entirely ECDSA/secp256k1-dependent. Approximately $1.2B in bridged TVL and ~$296M in DeFi TVL (DefiLlama) are exposed to quantum key-recovery attacks with no current mitigation, migration path, prototype, or testnet. The project earns credit for a detailed public roadmap reviewed by Dan Boneh and Justin Drake, enabling infrastructure (EIP-7702 live via Isthmus hardfork, May 2025), and strong open-source codebase, but the QRI Score of 5.25 reflects the absence of any production or testnet PQ protection. The binding Readiness & Risk Cap is 25 (roadmap/proposal only); the Factor Score of 5.25 is lower. The Stage 1 cap of 20 is not binding. Users and institutions should monitor for testnet and mainnet PQ deployments, which are not expected before late 2026 at the earliest per the published roadmap.

## Core resources

- [Optimism QRI report](https://qrindex.org/projects/optimism/): Human-readable assessment with score, stage, evidence, blockers, risks, and assurance notes.
- [Optimism structured report data](https://qrindex.org/projects/optimism/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.
- [Optimism official website](https://www.optimism.io): Project-maintained website.
- [Optimism source repository 1](https://github.com/ethereum-optimism/optimism): Project source code referenced by QRI.



## Evidence sources

- [Evidence source 1](<https://www.optimism.io/blog/a-post-quantum-roadmap-for-the-superchain>): Public source cited by the Optimism QRI assessment.
- [Evidence source 2](<https://github.com/ethereum-optimism/optimism>): Public source cited by the Optimism QRI assessment.
- [Evidence source 3](<https://github.com/ethereum-optimism/specs>): Public source cited by the Optimism QRI assessment.
- [Evidence source 4](<https://ethereum.org/roadmap/future-proofing/quantum-resistance/>): Public source cited by the Optimism QRI assessment.
- [Evidence source 5](<https://specs.optimism.io/protocol/system-config.html>): Public source cited by the Optimism QRI assessment.
- [Evidence source 6](<https://github.com/ethereum-optimism/optimism/pull/12325>): Public source cited by the Optimism QRI assessment.
- [Evidence source 7](<https://docs.optimism.io/builders/node-operators/architecture>): Public source cited by the Optimism QRI assessment.
- [Evidence source 8](<https://defillama.com/chain/op-mainnet>): Public source cited by the Optimism QRI assessment.
- [Evidence source 9](<https://defillama.com/bridged/op-mainnet>): Public source cited by the Optimism QRI assessment.
- [Evidence source 10](<https://l2beat.com/scaling/projects/op-mainnet>): Public source cited by the Optimism QRI assessment.
- [Evidence source 11](<https://gov.optimism.io/t/intro-to-optimisms-security-council/6885>): Public source cited by the Optimism QRI assessment.
- [Evidence source 12](<https://medium.com/@karl_floersch/optimism-post-quantum-roadmap>): Public source cited by the Optimism QRI assessment.
- [Evidence source 13](<https://gov.optimism.io/t/proposal-preview-fault-proofs-incident-response-improvements/9659>): Public source cited by the Optimism QRI assessment.