Given enough liquidity (assuming frequent transactions) GasEVO has a way to compute the exchange rate towards the base instrument (ETH). Like this, movements of the bigger or significant volumes can be interpreted as market trends (i.e. higher gwei pricing.) EVO Contracts work for almost any ERC20 asset. GasEVO is the reference implementation of the protocol specification. Think of it as a generalized “add-on”, much like how Liquidity Provider tokens are minted for exchanges (e.g. Curve, Uniswap, etc).