# JUST (JST) Quantum Readiness Report

> JUST has a QRI score of 3/100 and is assessed at Stage 1 (Quantum Risk Assessed) with low evidence confidence.

Evaluation date: 2026-06-05. Review status: draft. Evaluated scope: JST governance token (TRC-20) on TRON mainnet, including JustLend DAO governance contracts.

JUST (JST) is a standard TRC-20 governance token on the TRON blockchain. Under QRI Token Inheritance rules (Section 7.2), it inherits TRON's base-layer quantum security posture — which as of June 5, 2026 is entirely ECDSA-based with no production post-quantum protection. TRON founder Justin Sun has announced a quantum-resistant upgrade roadmap (Q2 2026 testnet, Q3 2026 mainnet) targeting NIST-standardized algorithms (ML-DSA, SLH-DSA), but no formal governance proposal, technical specification, public testnet code, or verifiable mainnet deployment exists. The Shasta testnet (last updated March 18, 2026) shows no quantum-resistant features. All JST spend authorization, governance voting (castVoteBySignature), and Timelock execution remain quantum-vulnerable. Approximately $768M in JST market cap and $6.9B in JustLend DAO TVL are fully exposed. The QRI Score of 3 reflects the presence of a public roadmap announcement but zero production protection and no verifiable quantum-ready implementation. Score is capped at 20 by the Stage 1 cap and Readiness & Risk Cap (risk assessment only; no credible mitigation design). Users and exchanges should monitor TRON's Q3 2026 mainnet upgrade for material changes to quantum-attack readiness.

## Core resources

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



## Evidence sources

- [Evidence source 1](<https://beincrypto.com/tron-quantum-resistant-mainnet-2026/>): Public source cited by the JUST QRI assessment.
- [Evidence source 2](<https://crypto.news/justin-sun-sets-2026-timeline-for-tron-quantum-resistant-upgrade/>): Public source cited by the JUST QRI assessment.
- [Evidence source 3](<https://www.just.network/>): Public source cited by the JUST QRI assessment.
- [Evidence source 4](<https://docs.justlend.org/developers/supply_and_borrow_market/governance/>): Public source cited by the JUST QRI assessment.
- [Evidence source 5](<https://www.gate.com/news/detail/tron-launches-a-post-quantum-cryptography-upgrade-plan-detailed-roadmap-20381761>): Public source cited by the JUST QRI assessment.
- [Evidence source 6](<https://coinmarketcap.com/currencies/just/>): Public source cited by the JUST QRI assessment.
- [Evidence source 7](<https://www.coingecko.com/en/coins/just>): Public source cited by the JUST QRI assessment.
- [Evidence source 8](<https://www.just.network/docs/white_paper_en.pdf>): Public source cited by the JUST QRI assessment.
- [Evidence source 9](<https://tron.guide/ecosystem/just/>): Public source cited by the JUST QRI assessment.
- [Evidence source 10](<https://docs.justlend.org/llms-full.txt>): Public source cited by the JUST QRI assessment.
- [Evidence source 11](<https://justfoundation.medium.com/a-letter-to-jst-holders-b7bdffd8702c>): Public source cited by the JUST QRI assessment.
- [Evidence source 12](<https://coira.io/news/tron-post-quantum-cryptography-nist-mainnet>): Public source cited by the JUST QRI assessment.