Fair Sequencing Service (FSS) 

    The Fair Sequencing Service (FSS) is a mechanism developed by the Chainlink data oracle platform that allows DeFi systems to reduce transaction ordering issues and costs. FSS simplifies the use of smart contracts on Layer-1 blockchains by allowing the Chainlink oracle network to order transactions to a specific smart contract composed of user transactions and oracle reports, rather than just one. Chainlink’s FSS has the potential to decentralize mining and transaction ordering in blockchain networks even further.