Trie format transition with overlay trees

Status history

1. Draft3 Apr 2020
2. ⋯Stagnantdate not observed

Abstract

This EIP describes a four phase process to complete the conversion. * In the first phase, all new state writes are made to an overlay binary trie, while the hexary trie is being converted to binary. The block format is changed to have two storage roots: the root of the hexary trie (hereafter called the "base" trie) and the root of the overlay binary trie. * After enough time has been given to…