RoboChain — Decentralized Robot Task Marketplace

1) Elevator Pitch

Users can post tasks (cleaning, delivery, inspection). Robot operators accept tasks. Payment is locked in escrow on-chain and released once the task is completed. Each robot has a Robot NFT as an on-chain identity. A native token is used for payments/rewards. Task evidence (telemetry, logs, images) is stored on IPFS for transparency.

2) Why it’s Hackathon-Friendly

• Combines Web3 (NFTs, tokens, escrow) with robotics/IoT.

• MVP can be done with a simulator (no need for real robots yet).

• Strong storytelling (waste collection, campus delivery, facility inspection).

3) MVP Features

1. Frontend dApp (Next.js): connect wallet, create task, view tasks.

2. Smart Contracts (Solidity, Hardhat):

   • RobotRegistry → mint Robot NFT.

   • TaskManager → createTask, acceptTask, escrow, completeTask.

3. Token (ERC20 RBC): in-app currency.

4. Robot Simulator Backend (Node.js): simulates execution, uploads evidence to IPFS, calls smart contract to finalize.

5. Receipts: NFT or event logs for completed tasks.

6. Profile: show owned robots, completed tasks, token balance.

4) Tech Stack

• Frontend: Next.js + Tailwind + wagmi + RainbowKit.

• Smart Contracts: Solidity + OpenZeppelin + Hardhat.

• Blockchain: Polygon Mumbai / Ethereum Sepolia testnet.

• Storage: IPFS / Pinata / nft.storage for metadata & evidence.

• Backend (Simulator): Node.js / Express (simple API).

• Optional: Chainlink Keepers for automation, MQTT/ROS bridge for real robots.