Ethereum is a decentralized, open-source blockchain network with Turing-complete smart contract functionality. Ether (ETH) is the native cryptocurrency. As of mid-September 2022, Ethereum uses the Proof of Stake consensus mechanism.
Infura provides access to the Ethereum JSON-RPC API method library that interacts with the Ethereum blockchain. Methods include functionality for reading and writing data to the network, and executing smart contracts.