Adaptive mean reversion blob pricing

Status history

1. Draft23 Mar 2025
2. ⋯Stagnantdate not observed

Abstract

Reworks the excess blob gas update in calc_excess_blob_gas() so that the blob base fee rises relatively more during high gas usage than it falls during low usage whenever the current fee is below the long-run average. This establishes a smoothly adapting, neutral lower bound for the base fee. The exponential moving average (EMA) is computed in the linear domain and stored as a header variable.