OpenZeppelin audits

Compiled by Trustblock from public reportsIs this your firm? Claim the profileopenzeppelin.com

As of 1 Oct 2026, OpenZeppelin has reviewed 69 projects in 191 audit reports on Trustblock, dated from Nov 2016 to Aug 2026. The latest is “Uniswap v4 Periphery PR #585 audit”, dated 12 Aug 2026.

Request an audit from OpenZeppelin

Record last updated . Trustblock lists reports. It does not score or rank audit firms.

Projects reviewed
69
with at least one report by this firm
Audit reports
191
Nov 2016 to Aug 2026
Latest report
Uniswap v4 Periphery PR #585 audit

Figures from these reports

Counted from the 191 reports above. Each figure carries its own date and source. They describe the projects and reports listed here; they are not a score, and they are not compared with any other firm.

Critical findings reported
75
Findings this firm rated critical in its 191 reports: 73 marked fixed, 0 acknowledged, 2 open.
Counted from the reports. As of 1 Oct 2026.
Value held in the projects reviewed
$23.9bn
The value locked in 21 of the 69 projects, each counted once. It measures the size of the projects.
Source: DefiLlama. As of 10 Oct 2026.
Findings reported, by severity and status
SeverityOpenAcknowledgedFixed
Critical2073
High395125
Medium13540267
Low328127781

Chains of the projects reviewed

  • Ethereum65
  • Arbitrum24
  • Polygon (POS)24
  • BNB Chain21
  • Optimism18
+16 other chainsSee all chainsHide the list
  1. Ethereum65
  2. Arbitrum24
  3. Polygon (POS)24
  4. BNB Chain21
  5. Optimism18
  6. Avalanche16
  7. Base13
  8. Scroll6
  9. Fantom5
  10. Polygon zkEVM5
  11. zkSync4
  12. Solana3
  13. Blast2
  14. Gnosis1
  15. Linea1
  16. Mantle1
  17. MegaETH1
  18. Monad1
  19. Plasma1
  20. Sonic1
  21. Unichain1

Counted from this firm's projects by the chains each runs on; a project is counted on each of its chains. As of 1 Oct 2026.

About OpenZeppelin

The standard for secure onchain applications at any scale. Build and operate with OpenZeppelin's open-source tools and Defender Cloud Services across 30+ networks. Secure your code with our smart contracts audit

Audit firm.

Show this record on your site

The audit firm widget shows OpenZeppelin’s reports on Trustblock and links to this page. Clients can add a project label that names the firm.

Open it in the Playground