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Security review · August 2026

Stellar Deployment

for USDT0

Guardian's review of Stellar Deployment for USDT0, published August 2026. The report records 2 findings, including 2 informational.

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Published
Review window
August 3, 2026
Chains
Ethereum, Arbitrum, Ink, Hyperliquid, Polygon, Monad, Solana, Stellar
Sector
Stablecoins
  • 0 Critical
  • 0 High
  • 0 Medium
  • 0 Low
  • 2 Informational

2 acknowledged

Scope

Findings 2

  1. I-01 Informational Arbitrum Atypical Block Confirmations Informational Acknowledged
    Location
    Global

    Description

    Arbitrum nonce 177, specifically for destination EID 30600 (Stellar), encodes 4,000 confirmations (0xfa0) when the typical number of confirmations from Arbitrum has been 60: https://github.com/Everdawn-Labs/usdt0-oft-contracts/blob/ef3db2a637a43f33dc17950afe4873d7c830c793/layerzero-prod.config.ts#L114

    Recommendation

    Ensure that 4000 block confirmations is the expected number for the Arbitrum and Stellar connection.

    Link to I-01
  2. I-02 Informational Stellar Confirmations Not Documented Informational Acknowledged
    Location
    Global

    Description

    For every reviewed Stellar → EVM pathway, the EVM destination’s receive ULN configuration requires 320 source-chain confirmations. This value is consistent across Ethereum, Polygon, Tempo, Plasma, and Arbitrum, but the intended Stellar confirmation requirement is not clearly documented in the repository.

    Recommendation

    Confirm that 320 is the intended confirmation requirement for messages originating from Stellar and document it in the repository’s deployment or pathway configuration.

    Link to I-02

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All 20 reports

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     4 findings 4 findings: 2 low, 2 informational

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