Interface FeeData

There is a base fee per gas in protocol, which can move up or down each block according to a formula which is a function of gas used in parent block and gas target (block gas limit divided by elasticity multiplier) of parent block. The algorithm results in the base fee per gas increasing when blocks are above the gas target, and decreasing when blocks are below the gas target. The base fee per gas is burned.

The block number associated with the result

Transactions also specify the maximum fee per gas they are willing to pay total (aka: max fee), which covers both the priority fee and the block's network fee per gas (aka: base fee)

Transactions specify the maximum fee per gas they are willing to give to miners to incentivize them to include their transaction (aka: priority fee).