This is a fork of Optimism, with support for custom gas token oracle. While Optimism supports custom gas tokens, it lacks support for converting DA price to custom gas token denomination on the L2. This leads to a situation where L2s with custom gas token either overcharge or undercharge for the DA costs of transactions.
- separate, independent service which fetches oracle prices from L1, and submits price updates to L2
- bindings for uniswap v2 and v3 oracles
- predeploy at address
0x42000000000000000000000000000000000007fE - stores latest price of custom gas token in ETH / L1 native asset
- fetches latest custom gas token price in ETH / L1 native asset
- converts
L1BlockInfo#BaseFee/BlobBaseFeeto L2 custom gas token denomination