ethereum.forks.tangerine_whistle
The Tangerine Whistle fork (EIP-608) is the first of two forks responding to a denial-of-service attack on the Ethereum network. It tunes the price of various EVM instructions, and reduces the state size by removing a number of empty accounts.
Changes
Upgrade Schedule
| Network | Block | Expected Date | Fork Hash |
| Mainnet | 2,463,000 | October 18, 2016 | 0x7a64da13 |
Releases
diff(ethereum.forks.tangerine_whistle,ethereum.forks.spurious_dragon).FORK_CRITERIA:0diff(ethereum.forks.tangerine_whistle,ethereum.forks.spurious_dragon).FORK_CRITERIA:1FORK_CRITERIA¶
diff(ethereum.forks.tangerine_whistle,ethereum.forks.spurious_dragon).FORK_CRITERIA:0diff(ethereum.forks.tangerine_whistle,ethereum.forks.spurious_dragon).FORK_CRITERIA:1
FORK_CRITERIA| 32 | FORK_CRITERIA: ForkCriteria = ByBlockNumber(2463000) |
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ethereum.forks.spurious_dragon
The Spurious Dragon fork is the second of two forks responding to a denial-of-service attack on the Ethereum network. It tunes the prices of EVM instructions, adds protection against replaying transaction on different chains, limits the maximum size of contract code, and enables the removal of empty accounts.
Changes
Upgrade Schedule
| Network | Block | Expected Date | Fork Hash |
| Mainnet | 2,675,000 | November 22, 2016 | 0x3edd5b10 |
Releases
diff(ethereum.forks.tangerine_whistle,ethereum.forks.spurious_dragon).FORK_CRITERIA:0diff(ethereum.forks.tangerine_whistle,ethereum.forks.spurious_dragon).FORK_CRITERIA:1FORK_CRITERIA¶
diff(ethereum.forks.tangerine_whistle,ethereum.forks.spurious_dragon).FORK_CRITERIA:0diff(ethereum.forks.tangerine_whistle,ethereum.forks.spurious_dragon).FORK_CRITERIA:1
FORK_CRITERIA| 38 | FORK_CRITERIA: ForkCriteria = ByBlockNumber(2675000) |
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