Smart contract audit services
Post your scope once and compare quotes for Solidity, Rust, Move and Daml audits.
Ethereum
Solana
Aptos
Sui
Starknet
Canton
TON
Monad
Bitcoin
Hyperliquid
Stacks
Arbitrum
BNB Chain
Base
Cardano
Robinhood Chain
How it works
- 01
Post
Describe your contracts, language and timeline once.
- 02
Receive quotes
Matched firms quote with price, timeline and named reviewers.
- 03
Compare
Line the quotes up side by side on the same scope.
- 04
Award
Pick a firm and track delivery in one place.
Smart contract audits by language
A strong Solidity auditor isn’t automatically a strong Move or Daml auditor, so requests are matched by language and chain first.
- Ethereum, L2s, EVM chains
Solidity
56 auditors listedThe deepest reviewer pool. Quotes compared by depth of review, from a single reviewer to a multi-person team with fuzzing.
Solidity audits - Solana, CosmWasm, Stylus, NEAR
Rust
52 auditors listedThe runtime matters as much as the language. A Solana program and a CosmWasm contract fail in different ways.
Rust smart contract audits - Sui, Aptos
Move
41 auditors listedResource safety removes some bug classes and leaves access control, object ownership and economic logic to review.
Move audit firms guide - Canton Network
Daml
26 auditors listedA small specialist pool. Authorisation, privacy and workflow logic replace the EVM's usual failure modes.
Daml audit guide
58firms on Procur3 offer smart contract audits.
Hacken
Halborn
Hashlock
CertiK
Sherlock
Sigma Prime
Shieldify Security
VulSight
KannAudits
Obsidian Audits
Egis Security
Recon
Safe Edges
MixBytes
Consensys Diligence- +43 more
When you need a smart contract audit
Most teams audit before mainnet and again before any significant upgrade. The trigger is risk, not a calendar.
- Your contracts will hold or move user fundsAny value at stake is a reason for an attacker to read your code.
- You're upgrading a live contractThe new version changes assumptions the last audit relied on.
- You've added an oracle, bridge or new integrationEach one brings someone else's failure modes into your system.
- An exchange, investor or partner asks for a reportListings, raises and integrations often require one.
How to choose a smart contract audit firm
- Who are the named reviewers?
Ask which engineers will read your code and what they've audited in your language and protocol type. A firm's brand doesn't review anything.
- How much effort does the quote assume?
Engineer-days and the number of reviewers tell you more than the total. Two quotes at the same price can buy very different depth.
- Is a fix review included?
Check whether remediation review is in the price and how many rounds it covers. Without it, nobody confirms the fixes worked.
Procur3 fills a gap no other platform serves: matchmaking between protocols and audit firms. No rounds of calls just to get a quote — for our Base contracts we compared multiple high-quality providers at once and weighed their strengths per project. We'll keep doing business with them.
Security isn't an afterthought for TermMax. Thanks @procur3 for helping us run a clean RFP to find specialized Daml auditors ahead of our Canton Network launch.
Frequently asked questions
What is a smart contract audit?
A smart contract audit is a security review of a blockchain program's code before or after deployment. Security engineers read the code line by line, run automated analysis and tests, and report vulnerabilities by severity. Once you fix them, the auditors review the fixes and publish a final report.
How much does a smart contract audit cost?
It depends on the size and complexity of the code, the language, the protocol type and how soon you need it. The audit cost calculator gives an indicative range for your scope, and the most reliable number is a set of real quotes on the same scope.
How long does a smart contract audit take?
A small, self-contained contract can take days. A large protocol with several integrations can take several weeks of review, plus time for fixes and a fix review. Firms state their timeline in each quote, along with when they can start.
Does an audit guarantee my contracts are secure?
No. An audit reduces risk within the scope and time reviewed; it doesn't prove the absence of bugs. Teams with significant value at stake add formal verification for critical properties, run a bug bounty and monitor after launch.
Which languages and chains can I get audited?
Solidity and Vyper on Ethereum and EVM chains, Rust on Solana, CosmWasm, Stylus and NEAR, Move on Sui and Aptos, Daml on Canton, and others. Firms are matched to your language and chain, so you only hear from firms that work in your stack.
Is it free to request smart contract audit quotes on Procur3?
Yes. Posting a request and comparing quotes is free. You agree the price and terms with the firm you choose.
