ChainSecurity spun out of ETH Zurich — their team wrote foundational Solidity compiler security research and developed VerX, one of the earliest Ethereum formal verification tools. Their academic rigor is real. So is their timeline: 3–6 weeks, $15,000–$50,000+, with a methodology that reflects academic thoroughness more than startup speed.
| Feature | ChainSecurity | SmartContractAuditor.ai |
|---|---|---|
| Starting price | $15,000 | Free |
| Time to first result | 3–6 weeks | < 60 seconds |
| Reentrancy detection | ✓ Manual | ✓ Automated |
| Formal verification (VerX) | ✓ Specialty | Not available |
| Compiler-level security research | ✓ ETH Zurich background | Not applicable |
| Access control analysis | ✓ Manual | ✓ Automated |
| Re-audit after changes | Paid separately | Included |
| Iteration speed | Slow (academic pace) | Instant re-scan |
ChainSecurity Cost
$15,000 – $50,000+
ChainSecurity Timeline
3 – 6 weeks
AI Audit Cost
Free – $100/mo
AI Audit Timeline
< 60 seconds
Most audit firms employ security researchers. ChainSecurity employs security researchers who also write academic papers about why Solidity is broken. Their team contributed to the formal analysis of the Solidity compiler's handling of storage variables and authored work on detecting temporal vulnerabilities — the class of bugs where contract behavior depends on the sequence of function calls over time, not just individual state at a point in time.
VerX, their temporal property verification tool, is specifically designed to check properties like "a function can only be called after another function has been called" — invariants that are difficult to express in testing and that standard pattern-matching tools don't catch. For contracts with complex initialization sequences, multi-step administrative processes, or order-dependent state machines, ChainSecurity's formal tooling adds genuine value.
Academic rigor and startup timelines are fundamentally in tension. ChainSecurity's methodology produces thorough documentation and careful scope definitions — both of which are valuable if you have the time for them, and painful if you have a launch deadline in 6 weeks.
Their conservative scope definitions also mean that a fixed-budget engagement might not cover everything you wanted reviewed. When the research team determines that a particular component is out of scope for the defined engagement, you're left with partial coverage.
For teams that can accommodate the timeline and appreciate the thoroughness — protocol teams with generous runways and significant TVL targets — ChainSecurity's methodical approach is a feature, not a bug. For everyone else, the academic pace creates real-world problems.
The vulnerability classes responsible for the majority of smart contract losses don't require ETH Zurich research to detect:
onlyOwner, unprotected initialize(), broken role hierarchiesAI analysis catches all of these in under 60 seconds, on every commit. If you need the academic-grade temporal property verification that ChainSecurity's VerX provides, add it as a final layer — not as your first security step.