OtterSec audits blockchain systems, including layer-one networks, wallets, DeFi protocols, bridges, and related infrastructure.
Sigma Prime
Sigma Prime audits smart contracts, zero-knowledge systems, blockchain infrastructure, and off-chain code, and publishes security research.
About Sigma Prime
Sigma Prime provides security audits for smart contracts, zero-knowledge systems, blockchain infrastructure, protocols, applications, and off-chain code. It also offers embedded security engineers, security training for engineering and operations teams, and operation of validator and sequencer infrastructure.
The organization also develops Lighthouse, Anchor, and Bombora, while Secstant review tooling is listed as in development. Work is service-based and requires contacting the team.
Key features
- Security audits for smart contracts, protocols, infrastructure, and applications
- Reviews of zero-knowledge systems and off-chain code
- Embedded security engineer working with client engineering teams
- Security training for engineers, operators, and leadership teams
- Operation of blockchain validator and sequencer infrastructure
- Open-source Rust Ethereum consensus client Lighthouse
Best for: Teams building blockchain protocols, infrastructure, or smart-contract applications that need external security review.
Good for
- Operating since 2016 with focus on blockchain security audits and research
- Publishes public audits and case studies with total and high-risk finding counts
- Develops and operates Ethereum software including Lighthouse, Anchor, and Bombora
Watch out for
- Security review tooling Secstant is listed as coming soon and not yet available
Sigma Prime at a glance
- Website
- sigmaprime.io
- Type
- Website
- Pricing
- Not confirmed. Check the site
- Platforms
- Web
- Open source
- Not stated
- Language
- English
- Last checked
- Oct 5, 2026 · Online when checked
- Listed
- Oct 5, 2026
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Sigma Prime FAQ
What types of systems does Sigma Prime audit?
Infrastructure, protocol, smart contract, and application-layer systems, including ZK systems and off-chain code.
Does Sigma Prime offer services besides one-time audits?
Yes, embedded security engineers, security training, and blockchain infrastructure operations.
What software does Sigma Prime develop?
Lighthouse consensus client, Anchor SSV implementation, Bombora block builder, and Secstant review tooling in development.
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