RealStock

Problem Statement

RealStock bridges traditional finance and DeFi by issuing ERC-20 tokens that are directly backed by real stocks rather than synthetic price feeds. Users deposit USDT, choose a supported stock (AAPL, AMZN, MSFT, S&P 500), and Redstone’s oracle secures the price. When a buy request is made, Gelato Web3 functions trigger the Alpaca API to purchase the stock off-chain, then mint a matching on-chain token. Selling burns the token and releases USDT. This design delivers verifiable ownership, transparency, and true real-world asset exposure on Rootstock Testnet.

Solution

RealStock is a full-stack decentralized application combining Solidity smart contracts, off-chain automation, and a modern web frontend.Smart Contracts (Foundry + Solidity)Core contracts handle USDT deposits, ERC-20 minting/burning, and use OpenZeppelin v4.9.5 libraries for security and upgradeability.Integrated Pyth price feed to wrap each buy/sell transaction with trusted oracle data.Includes a Pausable feature so trading can be enabled or disabled depending on market hours.Automation & Off-Chain ExecutionGelato Web3 Functions listen for BuyRequest and SellRequest events and call the Alpaca API to execute real stock trades on traditional exchanges.After a trade is confirmed, Gelato calls mintRStock or burnRStock to reflect ownership on-chain.Added a dedicated Market Function in Gelato that checks market status and calls the contract’s pause or unpause functions.This ensures the contract only allows trading when markets are open and automatically restricts it when closed.Frontend & DeploymentFrontend built with Next.js/TypeScript and wagmi/ethers.js for wallet connections.Deployed on Ethereum Sepolia using mock USDT for testing.Notable Hacks & IntegrationsCoordinating asynchronous off-chain stock purchases with on-chain state was challenging; event-driven Gelato jobs keep everything atomic from the user’s perspective.Mock USDT and test stocks allow a realistic trading flow without real capital.This setup guarantees that each on-chain token is verifiably backed by a real stock trade, while the Market Function keeps trading aligned with live market hours.