Sepolia

Sepolia is Ethereum's recommended, public Proof-of-Stake (PoS) testnet: the essential staging environment for smart contract and dApp deployment.

Sepolia is the official, primary testnet for Ethereum application developers, replacing the deprecated Goerli network. It operates on a Proof-of-Stake consensus mechanism, closely mimicking the Ethereum mainnet for realistic pre-deployment testing. The network uses a permissioned validator set, ensuring stability for developers. Key technical specifics: its Chain ID is 11155111, and unlike its predecessors, the supply of its native test currency, SepoliaETH, is uncapped, mitigating token scarcity issues. Use Sepolia to rigorously test your decentralized applications and smart contracts before committing to mainnet deployment.

https://sepolia.etherscan.io/