Ethereum Istanbul Upgrade Announcement

The Ethereum community will likely be present process a scheduled improve at block quantity 9,069,000, which is predicted to happen on Saturday, December 7, 2019. The precise date is topic to vary as a result of variable block occasions and timezones.

Please improve your node earlier than Sunday, December 1, 2019 to account for the variable block occasions has kindly supplied Istanbul node statistics and a countdown timer situated at has supplied a countdown timer situated at You possibly can monitor the community improve in actual time at

What’s Istanbul?

Istanbul is the title given to this community improve. Earlier community upgrades have been given different names akin to Costantinople, Spurious Dragon, and Byzantium.

As an Ethereum person or ether holder is there something I must do?

Should you use an trade (akin to Coinbase, Kraken, or Binance), an online pockets service (akin to Metamask, MyCrypto, or MyEtherWallet), a cellular pockets service (akin to Coinbase Pockets,, or Belief Pockets), or a {hardware} pockets (akin to Ledger, Trezor, or KeepKey) you do not want to do something except you might be knowledgeable to take further steps by your trade or pockets service.

As a node operator or miner, what do I must do?

Obtain the most recent model of your Ethereum consumer:

NOTE: Concord (ethereumJ) is now a deprecated consumer and won’t be supporting Istanbul. Besu is a mainnet appropriate Ethereum consumer written in Java.

What occurs if I’m a miner or node operator and I don’t take part within the improve?

If you’re utilizing an Ethereum consumer that isn’t up to date to the most recent model (listed above), your consumer will sync to the pre-fork blockchain as soon as the improve 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-upgrade Ethereum community.

What’s a community improve in Ethereum-land?

A community improve is a change to the underlying Ethereum protocol, creating new guidelines to enhance the system. The decentralized nature of blockchain programs makes a community improve tougher. Community upgrades in a blockchain require cooperation and communication with the neighborhood, in addition to with the builders of the varied Ethereum shoppers to ensure that the transition to go easily.

What occurs throughout a community improve?

After the neighborhood involves an settlement regarding which modifications must be included within the improve, modifications to the protocol are written into the varied Ethereum shoppers, akin to geth, Parity, and Nethermind. The protocol modifications are activated at a particular block quantity. Any nodes that haven’t been upgraded to the brand new ruleset will likely be deserted on the previous chain the place the earlier guidelines live on.

What modifications are going into Istanbul?

Modifications which might be applied in Istanbul are outlined utilizing EIPs. Ethereum Enchancment Proposals (EIPs) describe requirements for the Ethereum platform, together with core protocol specs, consumer APIs, and contract requirements. Please see the EIP which catalogs particular modifications going into Istanbul at EIP-1679. Please additionally see this article from the Ethereum Cat Herders which summarizes all of the modifications and explains our intensive testing course of.

Thank You!

An enormous due to the Ethereum neighborhood and to all Ethereum builders throughout all shoppers and platforms who got here collectively to supply enter, ideas, and contribution.

DISCLAIMER: That is an emergent and evolving extremely technical house. Should you select to implement the suggestions on this publish and proceed to take part, you need to ensure you perceive the way it impacts you. It is best to perceive that there are dangers concerned together with however not restricted to dangers like surprising bugs. By selecting to implement these suggestions, you alone assume the dangers of the results. This publish and suggestions usually are not a sale of any sort and don’t create any warranties of any sort together with however not restricted to any referring to the Ethereum community or the Ethereum shoppers referred to herein.

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