Gas token deposits
Table of Contents
Overview
Rollup users need a way to obtain the gas token to be able to send transactions on the L2. Existing solutions divide into two approaches: either an escrow contract contains preminted tokens that are unlocked through the L2 to L1 messaging channel, or a new transaction type that is able to mint the gas token is added to the STF. This page will also discuss two more approaches that are currently not used in any project.
Current approaches
OP stack
The custom "deposited transaction" type allows to mint the gas token based on TransactionDeposited event fields. On L2, the gas token magically appears in the user's balance.
Linea
WIP
Taiko
WIP
Other approaches
Manual state manipulation
WIP
Beacon chain withdrawals
WIP
Proposed design
WIP