A testnet is a version of a blockchain used for testing. It lets developers try out new features, apps, or updates without risking real money or affecting the main network (called the mainnet). Testnet coins look and act like real crypto but have no actual value—they’re just for practice.
Testnets are essential for safely testing code, fixing bugs, and making sure everything works before going live. Developers use them to test transactions, smart contracts, and app performance. They’re also useful for learning, experimenting, or simulating how a blockchain behaves under stress. Thanks to testnets, blockchains can grow and improve without putting real assets at risk.
