The Ethereum community shall be present process a tough fork at block quantity 2,675,000, which can probably happen between 15:00 and 16:00 UTC on Tuesday, November 22, 2016. A countdown timer may be seen at https://fork.codetract.io/. The Morden take a look at community shall be present process a tough fork at block no 1,885,000.
As a consumer, what do I must do?
Obtain the newest model of your Ethereum shopper:
What occurs if I don’t replace my shopper?
In case you are utilizing an Ethereum shopper that’s not up to date for the upcoming onerous fork, your shopper will sync to the pre-fork blockchain as soon as the fork happens. You can be caught on an incompatible chain following the previous guidelines and you may be unable to ship ether or function on the post-fork Ethereum community.
Importantly, in case your shopper shouldn’t be up to date, it additionally implies that any transactions you make will nonetheless be inclined to replay assaults.
What if I’m utilizing an online or cellular Ethereum pockets like MyEtherWallet or Jaxx?
Ethereum web sites and cellular functions that assist you to retailer ether and/or make transactions are operating their very own Ethereum shopper infrastructure to facilitate their providers. Typically, you don’t want to do something for those who use a 3rd get together net based mostly or cellular Ethereum pockets. Nonetheless, you need to nonetheless examine together with your net or cellular Ethereum pockets supplier to see what actions they’re taking to replace for the onerous fork and if they’re asking their customers to take different steps.
Specifically, you need to be certain that transactions are generated with the brand new replay-protected EIP 155 scheme.
What do I do if my Ethereum shopper is having hassle syncing to the blockchain?
Be sure you have downloaded the newest model of your Ethereum shopper.
Why are we proposing to onerous fork the community?
“Spurious Dragon” is the second onerous fork of the two-round onerous fork response to the DoS assaults on the Ethereum community in September and October. The earlier onerous fork (a.okay.a “Tangerine Whistle”) addressed fast community well being points as a result of assaults. The upcoming onerous fork addresses vital however much less urgent issues akin to additional tuning opcode pricing to stop future assaults on the community, enabling “debloat” of the blockchain state, and including replay assault safety.
What adjustments are part of this tough fork?
The next Ethereum Enchancment Proposals (EIPs) describe the protocol adjustments applied on this onerous fork.
- EIP 155: Replay assault safety – prevents transactions from one Ethereum chain from being rebroadcasted on an alternate chain. For instance: In case you ship 150 take a look at ether to somebody from the Morden testnet, that very same transaction can’t be replayed on the principle Ethereum chain. Essential be aware: EIP 155 is backwards suitable, so transactions generated with the “pre-Spurious-Dragon” format will nonetheless be accepted. Nonetheless, to make sure you are protected towards replay assaults, you’ll nonetheless want to make use of a pockets answer that implements EIP 155.
Bear in mind that this backwards compatibility additionally implies that transactions created from different Ethereum based mostly blockchains that haven’t applied EIP 155 (akin to Ethereum Traditional) can nonetheless be replayed on the principle Ethereum chain. - EIP 160: EXP price enhance – adjusts the worth of `EXP` opcode so it balances the worth of `EXP` with the computational complexity of the operation, primarily making it tougher to decelerate the community through computationally costly contract operations.
- EIP 161: State trie clearing – makes it attainable to take away a lot of empty accounts that had been put within the state at very low price on account of earlier DoS assaults. With this EIP, ’empty’ accounts are faraway from the state every time ‘touched’ by one other transaction. Elimination of the empty accounts significantly reduces blockchain state measurement, which can present shopper optimizations akin to quicker sync occasions. The precise elimination course of will start after the fork by systematically performing `CALL` to the empty accounts that had been created by the assaults.
- EIP 170: Contract code measurement restrict – adjustments the utmost code measurement {that a} contract on the blockchain can have. This replace prevents an assault state of affairs the place giant items of account code may be accessed repeatedly at a hard and fast gasoline price. The utmost measurement has been set to 24576 bytes, which is bigger than any presently deployed contract.
DISCLAIMER
That is an emergent and evolving extremely technical area. In case you select to implement the suggestions on this put up and proceed to take part, you need to be sure to perceive the way it impacts you. You need to perceive that there are dangers concerned together with however not restricted to dangers like sudden bugs. By selecting to implement these suggestions, you alone assume the dangers of the implications.