ethereum.forks.homestead
The Homestead fork increases the gas cost of creating contracts, restricts the range of valid ECDSA signatures for transactions (but not precompiles), tweaks the behavior of contract creation with insufficient gas, delays the difficulty bomb, and adds an improved delegate call EVM instruction.
Changes
Upgrade Schedule
| Network | Block | Expected Date | Fork Hash |
| Morden | 494,000 | ||
| Mainnet | 1,150,000 | March 14, 2016 | 0x97c2c34c |
Releases
FORK_CRITERIA
| 34 | FORK_CRITERIA = ByBlockNumber(1150000) |
|---|
ethereum.forks.dao_fork
The DAO Fork (EIP-779) is a response to a smart contract exploit known as the 2016 DAO Attack where a vulnerable contract was drained of its ether. This fork recovers the stolen funds into a new contract.
Changes
Transfer ether from a list of accounts into the Withdraw DAO contract
Upgrade Schedule
| Network | Block | Expected Date | Fork Hash |
| Mainnet | 1,920,000 | July 20, 1026 | 0x91d1f948 |
Releases
FORK_CRITERIA
| 29 | FORK_CRITERIA = ByBlockNumber(1920000) |
|---|