ethereum.forks.istanbul
The Istanbul fork (EIP-1679) 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.
Changes
Upgrade Schedule
| Network | Block | Expected Date | Fork Hash |
| Ropsten | 6,485,846 | ||
| Goerli | 1,561,651 | ||
| Rinkeby | 5,435,345 | ||
| Kovan | 14,111,141 | ||
| Mainnet | 9,069,000 | December 8, 2019 | 0x879d6e30 |
Releases
FORK_CRITERIA
| 53 | FORK_CRITERIA = ByBlockNumber(9069000) |
|---|
ethereum.forks.muir_glacier
The Muir Glacier fork delays the difficulty bomb. There are no other changes in this fork.
Changes
Upgrade Schedule
| Network | Block | Expected Date | Fork Hash |
| Ropsten | 7,117,117 | ||
| Mainnet | 9,200,000 | January 2, 2020 | 0xe029e991 |
Releases
FORK_CRITERIA
| 38 | FORK_CRITERIA = ByBlockNumber(9200000) |
|---|