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.
Use Ethereum to build apps and organizations, hold assets, transact, and communicate without being controlled by a central authority. Ethereum uses the Proof of Stake (PoS) consensus mechanism.
The Ethereum network has been upgraded from the original Proof of Work consensus mechanism to Proof of Stake during The Merge.
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.
See the official Ethereum documentation for more information.