# Ethereum

Ethereum is a public permissionless blockchain protocol.

Chainstack currently supports joining the following Ethereum networks:

  • Mainnet — public Ethereum mainnet.
  • Sepolia testnet — a proof-of-stake public permissioned Ethereum testnet.
  • Goerli testnet — a proof-of-stake public Ethereum testnet.

For development purposes on Ethereum testnets, fund your accounts with testnet ether.