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feemarket(specs): add hint on different gas terminology for gas in Cosmos and Ethereum (#1165)

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Daniel Burckhardt 2022-07-01 13:55:19 +02:00 committed by GitHub
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CHANGELOG.md
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@ -36,6 +36,12 @@ Ref: https://keepachangelog.com/en/1.0.0/
# Changelog
## Unreleased
### Improvements
* (feemarket) [\#1165](https://github.com/evmos/ethermint/pull/1165) Add hint in specs about different gas terminology for gas in Cosmos and Ethereum.
## [v0.17.0] - 2022-06-27
### State Machine Breaking

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x/feemarket/spec/01_concepts.md
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@ -24,6 +24,10 @@ fee = (baseFee + priorityTip) * gasLimit
, where `baseFee` is the fixed-per-block network fee per gas and `priorityTip` is an additional fee per gas that can be set optionally. Note, that both the base fee and the priority tip are a gas prices. To submit a transaction with EIP-1559, the signer needs to specify the `gasFeeCap` a maximum fee per gas they are willing to pay total and optionally the `priorityTip` , which covers both the priority fee and the block's network fee per gas (aka: base fee).
::: tip
The Cosmos SDK uses a different terminology for `gas` than Ethereum. What is called `gasLimit` on Ethereum is called `gasWanted` on Cosmos. You might encounter both terminologies on Evmos since it builds Ethereum on top of the SDK, e.g. when using different wallets like Keplr for Cosmos and Metamask for Ethereum.
:::
## Base Fee
The base fee per gas (aka base fee) is a global gas price defined at the consensus level. It is stored as a module parameter and is adjusted at the end of each block based on the total gas used in the previous block and gas target (`block gas limit / elasticity multiplier`):