ethereum.muir_glacier

The Muir Glacier fork delays the difficulty bomb. There are no other changes in this fork.

FORK_CRITERIA

7
FORK_CRITERIA = ByBlockNumber(9200000)

ethereum.berlin

The Berlin fork adjusts the gas costs of the ModExp precompile and several state access EVM instructions, introduces typed transaction envelopes along with the first new transaction type—optional access lists.

FORK_CRITERIA

9
FORK_CRITERIA = ByBlockNumber(12244000)