Ethereum
The base fee of an Ethereum block is the fundamental fee introduced by Ethereum’s gas fee model
EIP-1559
This base fee dynamically adjusts according to network transaction demand
The priority fee in Ethereum is the additional fee (tip) paid to miners, introduced in Ethereum’s gas fee model
EIP-1559
It is used to raise a transaction’s priority
estimate_gas is an RPC method on the Ethereum blockchain for estimating a transaction’s gas usage so users know in advance how much gas is needed
Gwei is the unit for calculating gas fees on Ethereum. Gas fees, required for executing transactions and smart contracts, are expressed in Gwei. 1 ETH equals 1 000 000 000 Gwei