Aelf is a multi-layer, multi-chain blockchain ecosystem similar to Ethereum. Aelf OS was developed on aelf as an open-source operating system like Linux to encourage a more cohesive dApp ecosystem. It uses both internal and external sidechains, along with a Delegated Proof of Stake consensus, to build a decentralized cloud computing network. ELF is the native ERC-20 token for the aelf platform.