# Blockbates > Blockbates is a Web3 shopping app on Base where every purchase earns a 50% USDC rebate. Transactions are gasless — powered by Coinbase Smart Wallet and Paymaster. ## How it works 1. Connect a Coinbase Smart Wallet (created with passkeys) 2. Browse products and buy with USDC on Base 3. The smart contract splits each payment 50/50 — half goes to the merchant, half is returned to the buyer 4. All transactions are gasless (gas sponsored by Coinbase Paymaster) ## Links - [Shop](https://blockbates.com/cheers): Browse products and make purchases - [Demo environment](https://demo.blockbates.com): Base Sepolia testnet version (use free testnet USDC from [Circle Faucet](https://faucet.circle.com/)) - [Agent guide](https://blockbates.com/skills.md): Step-by-step instructions for testing the app with a Smart Wallet