Blockchian 101: Securely Reading Data Across Blockchains | ERC20 Example with GET Requests

Description

Hyperbridge lets apps read data from any blockchain instantly, securely, and without needing a middleman. Perfect for DeFi, gaming, governance, and multi-chain applications. In this tutorial, Roy from Polytope Labs shows how to: ✅ Turn a Solidity contract into a HyperApp ✅ Dispatch GET requests to read ERC20 balances on Ethereum Sepolia ✅ Receive and handle cross-chain responses securely ✅ Compute storage slots using the Hyperbridge SDK ✅ Test your contract on testnets with self-relaying Tools Used: - Solidity + Foundry - Hyperbridge SDK - OpenZeppelin Contracts Resources & Links: - Hyperbridge Docs: https://docs.hyperbridge.network - Example Repository: https://github.com/polytope-labs - Join Discord: https://discord.gg/hyperbridge