Cross-Chain Applications on Ethereum and Harmony
summary
Ports an ERC-721 lending dApp from Ethereum to Harmony, deploying contracts with Truffle and harmony.js and connecting via MetaMask to Harmony mainnet. Uses the Harmony bridge to mint HRC20/HRC721 equivalents (ERC-20 DAI and an NFT) so lender/borrower flows run on Harmony; transactions finalize in ~2 seconds and cost a few cents versus ~$50 on Ethereum. Demo shows lending, borrowing, returns and balances updating successfully. Bridge is currently validator-run with a migration plan to on-chain verification and full EVM tooling compatibility.
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chapters (8)
- 0:00Introduction to Harmony
- 1:12Harmony for Ethereum
- 4:30Demo App Overview
- 8:03Setting up the Environment
- 11:26Contract Deployment
- 14:42Lending and Borrowing Demo
- 23:15Code Modifications
- 26:54Future Bridge Developments
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