# OKB (OKB) Quantum Readiness Report

> OKB has a QRI score of 1.75/100 and is assessed at Stage 1 (Quantum Risk Assessed) with high evidence confidence.

Evaluation date: 2026-06-05. Review status: draft. Evaluated scope: OKB ERC-20 token on Ethereum L1 and native gas token on X Layer L2.

OKB scores 2/100 on the Quantum Readiness Index, placing it in Stage 1 (Quantum Risk Assessed). OKX has published educational articles acknowledging the quantum threat to ECDSA and blockchain security generally, but has not produced an OKB-specific cryptographic inventory, threat model, or risk assessment. No post-quantum or hybrid cryptographic protection exists in any layer: spend authorization, consensus authentication, state integrity, bridge verification, admin/governance keys, and custody paths all remain entirely dependent on classical ECDSA secp256k1. All ~21M OKB in circulation is quantum-vulnerable with no migration, freeze, deprecation, or recovery path. The OP Stack infrastructure (to which X Layer migrated in October 2025) has a published 10-year PQ roadmap (January 2026) targeting ECDSA EOA deprecation by 2036, but this is a future infrastructure plan with zero current production protection for OKB holders. The Ethereum legacy proxy contract retains quantum-vulnerable admin keys despite L1 withdrawals being discontinued. OKB is a standard EVM-based token that fully inherits the quantum vulnerabilities of its host chains (Ethereum L1, X Layer/OP Stack L2) with the additional centralized risk of upgradeable proxy admin keys.

## Core resources

- [OKB QRI report](https://qrindex.org/projects/okb/): Human-readable assessment with score, stage, evidence, blockers, risks, and assurance notes.
- [OKB structured report data](https://qrindex.org/projects/okb/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.
- [OKB official website](https://www.coingecko.com/en/coins/okb): Project-maintained website.



## Evidence sources

- [Evidence source 1](<https://www.okx.com/learn/how-ethereum-is-preparing-for-the-quantum-computing-era>): Public source cited by the OKB QRI assessment.
- [Evidence source 2](<https://www.okx.com/learn/quantum-computing-blockchain-cryptographic-threat>): Public source cited by the OKB QRI assessment.
- [Evidence source 3](<https://www.okx.com/en-us/learn/layer-ethereum-quantum-preparation>): Public source cited by the OKB QRI assessment.
- [Evidence source 4](<https://etherscan.io/address/0x75231f58b43240c9718dd58b4967c5114342a86c#code>): Public source cited by the OKB QRI assessment.
- [Evidence source 5](<https://github.com/okx/okberc20token/blob/master/OKb.sol>): Public source cited by the OKB QRI assessment.
- [Evidence source 6](<https://web3.okx.com/xlayer/docs/developer/build-on-xlayer/about-xlayer>): Public source cited by the OKB QRI assessment.
- [Evidence source 7](<https://www.okx.com/xlayer/docs>): Public source cited by the OKB QRI assessment.
- [Evidence source 8](<https://etherscan.io/token/0x75231f58b43240c9718dd58b4967c5114342a86c>): Public source cited by the OKB QRI assessment.
- [Evidence source 9](<https://www.optimism.io/blog/a-post-quantum-roadmap-for-the-superchain>): Public source cited by the OKB QRI assessment.
- [Evidence source 10](<https://web3.okx.com/learn/x-layer-architecture-migration-from-polygon-zkevm-to-op-stack>): Public source cited by the OKB QRI assessment.
- [Evidence source 11](<https://github.com/okx/xlayer-bridge-service>): Public source cited by the OKB QRI assessment.
- [Evidence source 12](<https://github.com/okx/xlayer-contracts>): Public source cited by the OKB QRI assessment.
- [Evidence source 13](<https://web3.okx.com/xlayer/docs/developer/build-on-xlayer/contracts>): Public source cited by the OKB QRI assessment.
- [Evidence source 14](<https://developers.bitgo.com/docs/okbxlayer>): Public source cited by the OKB QRI assessment.
- [Evidence source 15](<https://www.ledger.com/coin/wallet/okb>): Public source cited by the OKB QRI assessment.
- [Evidence source 16](<https://www.okx.com/price/okb-okb>): Public source cited by the OKB QRI assessment.
- [Evidence source 17](<https://www.coingecko.com/en/coins/okb>): Public source cited by the OKB QRI assessment.
- [Evidence source 18](<https://www.okx.com/help/announcement-on-the-pp-upgrade-of-x-layer-and-optimisation-of-the-okb-gas>): Public source cited by the OKB QRI assessment.
- [Evidence source 19](<https://web3.okx.com/xlayer>): Public source cited by the OKB QRI assessment.
- [Evidence source 20](<https://github.com/okx/okberc20token>): Public source cited by the OKB QRI assessment.