[Sepolia ETH] is a test currency used by the layer 2 solution running on the Sepolia testnet.
Sepolia is a layer 2 extension solution developed to improve Ethereum's scalability and efficiency, offering lower fees and faster transaction processing compared to Ethereum's mainnet.
Sepolia testnet is one of Ethereum's official testnet. This currency allows developers to safely and efficiently test Sepolia extensions while mimicking the real Ethereum mainnet environment.