ethereum.istanbul
The Istanbul fork makes changes to the gas costs of EVM instructions and data, adds a cryptographic primitive, and introduces an instruction to fetch the current chain identifier.
FORK_CRITERIA
| 9 | FORK_CRITERIA = ByBlockNumber(9069000) |
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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) |
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