Blockchains have changed the game by giving us financial systems that don’t need banks, borders, or business hours. But not all blockchains are created equal. Some, like Ethereum, are designed to be flexible and programmable, which makes them perfect for building decentralized apps. Others, like Bitcoin, were built with laser focus: maximum security, minimal attack surface, and long-term reliability.Smart contracts are the magic behind most DeFi tools as they let you lend, borrow, trade, and ear