Backers get automatic refunds if the goal is not reached
Intermediate16h1–2
SolidityFoundryWagmi
17/20Freelancer Milestone Escrow
Holds payment in escrow and releases it per approved milestone.
Intermediate36h2–3 people15/20 fit
Build Freelancer Milestone Escrow for freelancers and small clients in ~36h with 2–3 people. Stack: Solidity + Foundry + viem + React.
Why it wins: Trust problem solved with simple contract logic.
Build flow
01 · Problem
Freelancers fear non-payment; clients fear paying upfront.
02 · Solution
Escrow contract with milestones; client approves to release, with a timeout rule.
03 · Build
- 1Escrow contract + tests
- 2Deploy to testnet
- 3Client/freelancer UI
- 4Event history
04 · Demo
Fund escrow → mark milestone done → client approves → funds release on testnet.
MVP checklist
- Create milestones
- Fund escrow
- Approve + release
- Timeout refund
Tech stack
| Tech | Role | |
|---|---|---|
| Solidity | Smart contracts | Chain |
| Foundry | Contract testing + deploy | Chain |
| viem | Ethereum client | Chain |
| React | Frontend UI | Web |
Reference repos
Open-source projects you can build on. Links checked 2026-10-31.
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