What Sigma Prime does

Sigma Prime is a privately held blockchain security and engineering firm founded in 2016 and headquartered in Sydney, Australia, with a distributed engineering team. The company specializes in security audits and research for blockchain protocols, smart contracts, infrastructure, and frontend applications, serving the largest names in the crypto industry including the Ethereum Foundation, Lido, EigenLayer, Chainlink, Aave, Arbitrum, Optimism, Avalanche, Polkadot, and NEAR Protocol. Its customer roster and 400+ audited projects with $57B+ in TVL protected position it as a tier-1 specialist in Ethereum-ecosystem security.

Sigma Prime's technology stack is built on Rust and centers on four core open-source products: Lighthouse, one of the most widely deployed Ethereum consensus clients; Anchor, an SSV implementation for distributed validator technology; Bombora, an Ethereum block builder operating in the PBS supply chain; and Secstant, an AI-assisted security review tool in development. The team operates critical Ethereum infrastructure directly, managing approximately $0.5B of Lido stake as a DVT operator and participating in roughly 7% of the Aztec sequencer set. This operational footprint across staking and sequencing gives the firm hands-on visibility into real-world consensus, validation, and rollup failure modes that informs its security research (for example, the EigenLayer sidecar division-by-zero vulnerability discovery).

The business model combines three revenue streams: fixed-fee security audit engagements (the primary stream, sold through a sales-led direct engagement process with scoping calls of 30-45 minutes and written proposals covering scope, team, timeline, and fee); recurring embedded security support subscriptions providing senior security leadership to active engineering teams; and managed infrastructure services from Lido DVT and Aztec sequencer operations. Pricing is not publicly disclosed; engagements are quoted on a fixed-fee basis and span multi-year contract cadences. Go-to-market is entirely enterprise-direct with no self-serve channel, relying on the firm's reputation from open-source contributions (Lighthouse) and published security research to drive inbound from blockchain protocol teams, DeFi projects, and infrastructure operators globally.

Name

Sigma Prime

Legal name

Sigma Prime

Website

https://sigmaprime.io

Company type

Private

Founded year

2016

Operating status

Operating

Headcount range

11–50 employees

Short description

Sigma Prime is a Sydney-based, bootstrapped blockchain security and engineering firm founded in 2016 that audits smart contracts and protocols for major crypto projects while building open-source Ethereum infrastructure including Lighthouse consensus client and operating Lido/Aztec validators.

Ownership category

akta.pro rank

Product category

Blockchain Security Services

akta.pro primary industry

Smart Contract Auditing & Formal Verification (FSAPAJAA)

akta.pro secondary industries

Digital Asset Risk, Security & Audit Tooling (Smart Contract Audit, Threat Monitoring) (FSAGAMAJ), Smart Contract Frameworks & SDKs (developer kits, templates, standards) (FSAPABAB), Regulatory Reporting, Tax & Audit Trails (reconciliation, provenance) (FSAPAJAI)

Keywords

• Blockchain security audits
• Smart contract audits
• Ethereum consensus client
• Distributed validator technology
• Blockchain protocol security

Headquarters

HQ city

Sydney

HQ country

Australia

HQ region

Oceania

Offices1 record

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Technology or R&D, Operations, Marketing or Sales, Infrastructure

Revenue model

1. Security Audit Services: Fixed-fee security audit engagements for smart contracts, blockchain protocols, infrastructure, and frontend applications. Team size varies by scope, engagements include remediation review and written reports.
2. Embedded Security Support: Recurring senior security partnership for teams requiring ongoing guidance across engineering, releases, and risk decisions.
3. Blockchain Infrastructure Operations: Operator roles in staking and sequencer infrastructure including Lido DVT operations and Aztec sequencer participation, operating roughly $0.5B of Lido stake.

Pricing tiers

Go-to-market motion1 record

Distribution channels3 records

Marketing channels6 records

Core offering

Sigma Prime performs security audits and research on blockchain protocols, smart contracts, infrastructure, and frontend applications for enterprise clients building critical blockchain systems. The firm also develops and maintains open-source Ethereum infrastructure products including the Lighthouse consensus client, Anchor DVT implementation, and Bombora block builder, while operating Lido DVT and Aztec sequencer infrastructure.

Product overview

Sigma Prime offers a portfolio of Ethereum infrastructure products combined with specialized blockchain security services. The core product suite includes Lighthouse (Ethereum consensus client), Anchor (DVT implementation), Bombora (block builder), and Secstant (AI-powered security tooling in development). These products are complemented by professional services including security audits (infrastructure, protocol, smart contracts, frontend applications), embedded security support, security training, and blockchain infrastructure operations. The company operates approximately $0.5B of Lido stake and 7% of the Aztec sequencer set, providing hands-on operational expertise that informs their security research.

Differentiator

Problem solved

Functional benefit

Brands

• Lighthouse: Open-source Rust Ethereum consensus client, among the most widely deployed consensus clients on Ethereum
• Anchor
• Bombora
• Secstant

Products and services

• Security Audits Comprehensive security audit services covering infrastructure reviews, blockchain protocol audits, smart contract audits (Solidity, Vyper, Rust, Move), and frontend application reviews for blockchain systems. Delivered as fixed-fee engagements with written reports and remediation review included.
• Embedded Security Support Recurring senior security partnership providing embedded security leadership and hands-on review for teams requiring ongoing guidance across engineering releases, architecture decisions, and risk trade-offs. Sold as multi-year subscription engagements.
• Security Training Practical role-specific training delivered to engineers, operators, and leadership teams responsible for high-value blockchain systems.
• Blockchain Infrastructure Operations Non-custodial staking operations including Lido DVT operator role managing approximately $0.5B of Lido stake and Aztec sequencer operations covering about 7% of the Aztec sequencer set.

Quantifiable outcome

• $57B+ TVL protected across audited projects
• +2 more outcomes

Named customers21 records

Segments4 records

Ideal customer profiles4 records

Technology focussed Yes

API detail

Has API

Yes

API docs

API detail

Core technology

AI maturity

App detail

Integration4 records

AI capability2 records

Feature5 records

Scale indicators7 records

Recent moves6 records

Expansion highlights6 records

Direct peers

• OpenZeppelin: Security audits for smart contracts, secure contract libraries, and security monitoring. One of the largest and most established players in Ethereum security, competing head-to-head for protocol and DeFi audit engagements.
• ChainSecurity: Blockchain security firm focused on smart contract audits, formal verification, and protocol security reviews. Close peer in the protocol-audit niche with a similar institutional client base.
• Spearbit: Decentralized network of senior security researchers offering smart contract and protocol audits. Directly competes for high-end audit work and shares the senior-researcher engagement model.
• Trail of Bits: Premier blockchain and software security firm offering smart contract audits, cryptography reviews, and security tooling. Direct competitor in tier-1 protocol audits with overlapping service lines and customer profiles.
• Prysm (Prysmatic Labs): Go-based Ethereum consensus client that competes directly with Lighthouse. Comparable in scale of deployment and validator share, with overlapping client-diversity mission.
• Zellic: Security research firm specializing in smart contract audits and cryptography. Comparable in scale and client mix, competing for the same tier-1 protocol engagements.

Emerging players

• Nethermind Security: Security and engineering services arm of Nethermind, offering audits for protocols built on its execution client stack. Comparable in combining core infrastructure with adjacent security services.
• Code4rena: Competitive audit platform using crowdsourced wardens. Adjacent to traditional audit firms, competing on price and speed for many of the same DeFi and protocol clients.

Broad incumbents

• ConsenSys Diligence: Audit arm of ConsenSys, offering smart contract audits and MythX tooling across the Ethereum ecosystem. Larger, broader portfolio player competing for the same protocol and DeFi audit mandates.
• Teku (ConsenSys): Java-based Ethereum consensus client maintained by ConsenSys. Direct competitor to Lighthouse and notable because Sigma Prime's Lighthouse has built-in fallback to Teku beacon nodes.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights6 records

Customer concentration

• GitHubgithub.com/sigp
• LinkedInlinkedin.com/company/sigmaprime/mycompany

Revenue estimate

Valuation estimate

Number of profiles

Profiles4 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Sigma Prime