Our agency will audit erc721 and erc1155 nft smart contracts for security

Enterprise Grade Smart Contract Audit and EVM Blockchain Development
Vetted by Fiverr Pro
Ether Authority was selected by the Fiverr Pro team for their expertise.
Vetted for
Blockchain Development & Solutions
About this Gig
Protect your NFT launch with a Solidity smart contract audit.
EtherAuthority is a Fiverr Pro-vetted blockchain security agency serving Web3 teams since 2018. We audit ERC721, ERC721A, ERC1155, minting, staking, royalty, marketplace, and NFT contracts on EVM chains.
What you receive:
- Manual line-by-line review
- Automated security analysis
- Testing of access control, minting, supply, signatures, reentrancy, upgradeability, and business logic
- Exploit scenarios or proof-of-concept tests where appropriate
- Severity-ranked findings with remediation guidance
- PDF audit report
- Post-fix recheck when included
Process:
- Confirm scope, code version, chain, and deadline
- Audit the code and validate findings
- Deliver the report and answer questions
- Recheck corrected findings when included
Before ordering, send the source files, non-library code-line count, compiler version, documentation, tests, deployment status, and deadline.
An audit reduces risk but cannot guarantee vulnerability-free software. Frontend, infrastructure, tokenomics, and off-chain systems are excluded unless agreed.
Message us before ordering for an accurate scope, price, and delivery plan.
Token standard:
ERC-721
Programming Language:
Solidity
Blockchain platform:
Ethereum
Portfolio
Other Cryptocurrencies & Tokens Services we Offer
FAQ
What types of NFT smart contracts do you audit?
We audit ERC721, ERC721A, ERC1155, NFT minting, staking, royalty, allowlist, marketplace and related Solidity contracts deployed on Ethereum and compatible EVM chains.
What do you need to quote my smart contract audit?
Please provide the source files or repository, contract list, non-library code-line count, compiler version, target chain, documentation, test suite, deployment status and deadline.
Is the audit manual or automated?
We use a manual-first process supported by automated security tools. Automated scanners help identify known patterns, while manual review is used to examine business logic, permissions, contract interactions and project-specific exploit scenarios.
Which vulnerabilities do you check?
The review may cover access-control flaws, reentrancy, signature misuse, minting errors, supply manipulation, upgradeability risks, front-running, denial of service, unsafe external calls, business-logic errors and contract-interaction vulnerabilities.
Will I receive a professional audit report?
Yes. The report includes an executive summary, scope, methodology, severity-ranked findings, affected code, security impact, evidence and remediation recommendations.
Can the Audit Report be sent to Exchanges or Marketplace?
Yes. Many clients use our audit report as third-party proof of professional smart contract review. You may share the report with exchanges, NFT marketplaces, investors, community members, your website, or GitHub repository to increase project trust.
Are bug fixes included?
Bug fixes are not automatically included unless stated in the selected package or custom offer. We can provide fix implementation as a separate service after delivering the findings.
Will my source code remain confidential?
Yes. Private source code is reviewed only for the agreed audit purpose. Please mention any NDA, repository-access or confidentiality requirements before the order begins.
How are price and delivery calculated?
Pricing depends on non-library source lines, contract count, complexity, upgradeability, external integrations, documentation quality and deadline. Please send the scope before ordering.
Why we are the best?
EtherAuthority has been securing blockchain smart contracts since 2018. We live and breathe smart contract development and security. Our team has audited over 1000+ projects. Check the reviews from our previous clients, and you'll have the answer to your question.
1 reviews for this Gig
| (1) | ||
| (0) | ||
| (0) | ||
| (0) | ||
| (0) |
Rating Breakdown
- Seller communication level
- Recommend to a friend
- Service as described
Sort By
A amirfehresti

Turkey
Ongoing collaborationExcellent service and everything
$50
Price
Y 
Seller's Response
Helpful?
1 reviews for this Gig
| (1) | ||
| (0) | ||
| (0) | ||
| (0) | ||
| (0) |
Rating Breakdown
- Seller communication level
- Recommend to a friend
- Service as described
Sort By
A amirfehresti

Turkey
Ongoing collaborationExcellent service and everything
$50
Price
Y 
Seller's Response
Helpful?

