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update minimum base fee design doc #308

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update minimum base fee design doc #308

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110a6d6
add note about best effort decoding
wlawt Jul 28, 2025
550c3ba
add minbasefeelog2
wlawt Jul 28, 2025
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5 changes: 3 additions & 2 deletions protocol/minimum-base-fee.md
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Expand Up @@ -47,7 +47,7 @@ Additionally,
- there is no additional data beyond these 10 bytes

Note that `extraData` has a maximum capacity of 32 bytes (to fit in the L1 beacon-chain `extraData` data-type) and its
format may be modified/extended by future upgrades.
format may be modified/extended by future upgrades. Furthermore, when decoding `extraData`, it makes a best-effort for every block in the chain's history, including before the minimum base fee was enabled.

## Minimum Base Fee in `PayloadAttributesV3`

Expand All @@ -64,7 +64,8 @@ PayloadAttributesV3: {
transactions: array of DATA
noTxPool: bool
gasLimit: QUANTITY or null
eip1559Params: DATA (9 bytes) or null
eip1559Params: DATA (8 bytes) or null
minBaseFeeLog2: u8
}
```

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