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Blockchain · Mini Project
Freelance Escrow Smart Contract
Client deposits, release on approval, and an arbiter for disputes
1-2 weeks build
Overview
A client creates a job, names a freelancer and an arbiter, and locks the fee in the contract. The freelancer marks the work delivered; the client either approves and releases payment or raises a dispute, which the arbiter settles by awarding the funds to either side. Each job is a clear state machine with tests for every transition. Uses test ETH on Sepolia or local Hardhat.
What makes it stand up
- 01Fee locked in the contract when the job is created
- 02Explicit job states from funded to released
- 03Dispute path settled by a named arbiter
- 04Hardhat tests for every allowed and forbidden transition
- 05Test ETH only, on Sepolia or a local chain
Module breakdown
- 01
Job contract
Stores parties, fee and the current job state.
- 02
Delivery
Lets the freelancer mark work submitted.
- 03
Release
Client approval pays the freelancer.
- 04
Disputes
Arbiter decides who receives the locked funds.
- 05
Frontend
React screens for each party's actions.
After this, you will be able to
- Explain the job state machine and why order matters
- Defend the arbiter's role and its trust assumptions
- Demo a disputed job being settled on a testnet
Technology stack
- Solidity
- Hardhat
- ethers.js
- React
- MetaMask
- Level
- Mini Project
- Domain
- Blockchain
- Build time
- 1-2 weeks
- Difficulty
You receive
- Complete, commented source code
- 60-90 page project report (IEEE format)
- Editable presentation deck
- Architecture, ER and UML diagrams
- Local setup and deployment guide
- Sample dataset or seed data
- Viva question bank with answers
- One 45-minute walkthrough call
- 30 days of doubt-clearing support