web3InterfacesBlockHeaderOutputOn this pageBlockHeaderOutput Index PropertiesbaseFeePerGasdifficultygasLimitgasUsedminernumberparentHashsha3UnclestimestamptotalDifficultytransactionsProperties optionalreadonlybaseFeePerGasbaseFeePerGas?: Numbersoptionalreadonlydifficultydifficulty?: NumbersreadonlygasLimitgasLimit: NumbersreadonlygasUsedgasUsed: Numbersoptionalreadonlyminerminer?: stringoptionalreadonlynumbernumber?: NumbersoptionalreadonlyparentHashparentHash?: stringreadonlysha3Unclessha3Uncles: string[]readonlytimestamptimestamp: NumbersoptionalreadonlytotalDifficultytotalDifficulty?: Numbersoptionalreadonlytransactionstransactions?: TransactionOutput[]