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Definition: Fuel


A blockchain execution layer for Ethereum from Fuel Labs that is noted for its multithreaded capability for processing transactions. Fuel is a modular architecture based on the FuelVM execution module that is programmed in the Rust-based Sway language. Fuel defines its modularity as follows. See modular blockchain, smart contract and consensus mechanism.
 Monolithic Chain      Fuel Modular Layers

 1. Smart contracts    1. Smart contracts

 2. Consensus,         2. FuelVM
    Settlement and
    Data availability  3. Consensus and
                          Data availability