[Core Protocol] Ecotone fee docs are incorrect and inconsistent

[deanpress]

Did you check the documentation?

• Yes

Did you read the specs?

• Yes
• No

Did you check for duplicate questions?

• Yes

Issue Description

The ecotone section on fees explains the following:

At the exact point of the Ecotone upgrade, the dynamic overhead parameter value is used to initialize the Ecotone base fee scalar, and blob base fee is set to 0. The overhead parameter from the previous function becomes ignored.

On the final line, it says:

Recall that base_fee_scalar is set to dynamic_overhead and blob_base_fee_scalar is 0

Meanwhile, looking at GasOracle calls in a transaction stack trace, none of the values returned are 0 (even though the baseFee view function in GasOracle on basescan returns 0).

Following the formula in the Optimism docs using GasOracle will result in an L1 fee calculation that's much (>10x) higher than the actual L1 fee (e.g. 800 * (16 * 1101 * 5931493) + (659851 * 2)).

Please provide an accurate description of the calculation in the docs. I believe a Solidity example using GasOracle will also help greatly.

Additional Information

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[hash1go]

Hello. Are you asking about Base rather than OP Mainnet?

[hash1go]

@deanpress
First, the values you referred are no longer in use.

(even though the baseFee view function in GasOracle on basescan returns 0).

Please refer to this.
That document does not reflect the actual method names of the contract. Therefore, I think it would be best to refer to this specification.

Additionally, the base_fee_scalar and blob_base_fee_scalar have the hardcoded value of 6 applied as decimals. Therefore, you should divide by 10e6. For more details, please refer to this specification.

Based on this, the L1fee should output the actual value.
Upon actual calculation, your L1 fee can be 0.00013 USD.