Build and Audit an ERC-20 Vesting Contract for a DeFi Startup
Overview
What this challenge is about.
Build an ERC-20 vesting contract for a DeFi startup, write Foundry tests, run Slither and Mythril, and earn your verifiable certificate.
The scenario
The startup (mostly ex-financial-engineering, no prior production Solidity) cannot afford a failed audit — token launch slips by 4+ weeks if they do.
The Brief
What you'll do, and what you'll demonstrate.
Ship an audit-ready ERC-20 vesting contract with 90%+ test coverage and zero unresolved Slither/Mythril findings.
Earning criteria — what you'll demonstrate
- Design an audit-ready smart contract from a real business requirement
- Use OpenZeppelin primitives without anti-patterns
- Run and act on static-analysis tooling (Slither, Mythril)
- Prepare a contract for external audit (document invariants, threat model)
Program Fit
Where this fits in your program.
Sharpens the same skills your degree expects you to demonstrate.
Blockchain and Decentralized Systems Engineering
Master · Software Engineering
Strong alignment
This challenge maps to Blockchain and Decentralized Systems Engineering at the Master level. It sharpens the same practical skills your coursework expects — but in a real industry context with actual constraints and deliverables.
Skills
Skills you'll demonstrate.
Each one shows up on your verified credential.
- Solidity
Apply solidity to solve real industry problems and demonstrate production-level capability.
- Smart Contracts
Apply smart contracts to solve real industry problems and demonstrate production-level capability.
- Foundry
Apply foundry to solve real industry problems and demonstrate production-level capability.
- Security Audit
Apply security audit to solve real industry problems and demonstrate production-level capability.
- Ethereum
Apply ethereum to solve real industry problems and demonstrate production-level capability.
- Documentation
Apply documentation to solve real industry problems and demonstrate production-level capability.
Careers
Career paths this challenge builds toward
Completing this challenge demonstrates skills that transfer directly to these roles: