ethereum.forks.london
The London fork overhauls the transaction fee market, changes gas refunds, reserves a contract prefix for future use, and delays the difficulty bomb.
Changes
Upgrade Schedule
| Network | Block | Expected Date | Fork Hash |
| Ropsten | 10,499,401 | June 24, 2021 | 0x7119b6b3 |
| Goerli | 5,062,605 | June 30, 2021 | 0xb8c6299d |
| Rinkeby | 9,987,988 | July 7, 2021 | 0x8e29f2f3 |
| Mainnet | 12,965,000 | August 5, 2021 | 0x0eb440f6 |
| Kovan | 26,741,100 | August 12, 2021 |
Releases
diff(ethereum.forks.london,ethereum.forks.arrow_glacier).FORK_CRITERIA:1diff(ethereum.forks.london,ethereum.forks.arrow_glacier).FORK_CRITERIA:0FORK_CRITERIA¶
diff(ethereum.forks.london,ethereum.forks.arrow_glacier).FORK_CRITERIA:1diff(ethereum.forks.london,ethereum.forks.arrow_glacier).FORK_CRITERIA:0
FORK_CRITERIA| 48 | FORK_CRITERIA: ForkCriteria = ByBlockNumber(12965000) |
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ethereum.forks.arrow_glacier
The Arrow Glacier fork delays the difficulty bomb. There are no other changes in this fork.
Changes
Upgrade Schedule
| Network | Block | Expected Date | Fork Hash |
| Mainnet | 13,773,000 | December 8, 2021 | 0x20c327fc |
Releases
diff(ethereum.forks.london,ethereum.forks.arrow_glacier).FORK_CRITERIA:1diff(ethereum.forks.london,ethereum.forks.arrow_glacier).FORK_CRITERIA:0FORK_CRITERIA¶
diff(ethereum.forks.london,ethereum.forks.arrow_glacier).FORK_CRITERIA:1diff(ethereum.forks.london,ethereum.forks.arrow_glacier).FORK_CRITERIA:0
FORK_CRITERIA| 33 | FORK_CRITERIA: ForkCriteria = ByBlockNumber(13773000) |
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