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- The Sepolia testnet will endure a post-merge execution layer (EL) improve at block 1735371, anticipated on August 17, 2022
- The improve will trigger EL shoppers on the community to disconnect from friends which haven’t transitioned to proof-of-stake. It doesn’t add extra performance past this.
- Sepolia node operators should improve their execution layer shopper prior to dam 1735371.
- The same improve is predicted on Goerli and the Ethereum mainnet as soon as these networks have transitioned to proof-of-stake
Background
With a view to preserve a wholesome peer checklist, nodes on Ethereum’s execution layer will routinely disconnect friends who would not have the identical improve sequence as them. On the Ethereum mainnet, this implies checking whether or not a peer upgrded to Frontier Thawing at block 200,000, then Homestead at block 1,150,000, and so forth all the way in which to the newest improve, Gray Glacier, which occurred at block 15,050,000. EIP-2124 specifies how that is dealt with. In typical community upgrades, that are triggered by a block peak, this occurs routinely as nodes use the block peak of upcomming upgrades to filter friends.
For The Merge, this was not potential as a result of the improve was triggered utilizing a whole problem worth quite than a block quantity. The rationale for this selection is defined in EIP-3675:
Utilizing a pre-defined block quantity for the hardfork is unsafe on this context as a result of PoS fork selection taking precedence throughout the transition.
An attacker might use a minority of hash energy to construct a malicious chain fork that will fulfill the block peak requirement. Then the primary PoS block could also be maliciously proposed on prime of the PoW block from this adversarial fork, turning into the pinnacle and subverting the safety of the transition.
To guard the community from this assault situation, problem amassed by the chain (whole problem) is used to set off the improve.
To attenuate modifications to the protocol throughout its most complicated improve since launch, the design for The Merge excluded EIP-2124 compatibility. This implies a further improve should now be completed so as to add this. You will need to observe that the one change launched as a part of this improve is specifying a block quantity that nodes can use to establish friends who’ve gone by means of The Merge. No different performance is launched or deprecated as a part of this improve.
Improve Info
Timing
This improve will occur on Sepolia at block 1735371, anticipated on August 17, 2022.
Be aware {that a} related improve will likely be introduced for Goerli and mainnet after these networks have transitioned to proof-of-stake.
Ropsten will not be upgraded since it’s now thought of deprecated, together with Rinkeby and Kiln. See this post for extra particulars on their deprecation schedule.
Shopper Releases
Solely execution layer shoppers should be up to date for this improve. Node operators can maintain working their present consensus layer shopper launch on Sepolia by means of the transition.
Be aware that shopper releases used for the Goerli/Prater merge all assist this improve on Sepolia. In different phrases, in the event you already downloaded a launch for the Goerli/Prater merge, you need to use that very same model on Sepolia for this improve.
Execution Layer
Improve Specs
The specification for this modification is tracked as a part of the Paris specs, beneath the FORK NEXT Improve part.
FAQ
As a node operator, what ought to I do?
It is best to improve your execution layer shopper to one of many variations listed above earlier than August 16, 2022. Your consensus layer shopper doesn’t should be upgraded.
As a staker, what do I have to do?
The validator set on Sepolia is permissioned. In case you are half of the present Sepolia validators, you have to replace your execution layer shopper to one of many variations listed above on August 16, 2022 on the newest.
In case you are not half of the present Sepolia validator set, you do not want to do something at the moment.
Goerli/Prater and mainnet validators might want to observe the identical steps when this improve is introduced on these networks.
As an software or tooling developer, what ought to I do?
Nothing, except you might be additionally working a node. If that’s the case, please improve your execution layer shopper to one of many variations listed above earlier than August 16, 2022.
As an Ethereum consumer or Ether holder, is there something I have to do?
No. The Ethereum mainnet shouldn’t be affected by this improve. Even when this improve will likely be utilized to mainnet, there will not be any motion wanted.
Thanks to Justin Chrn for the unique cowl picture and Tomo Saito for the modifications.
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