- The Sepolia testnet will bear 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.
- An analogous improve is anticipated on Goerli and the Ethereum mainnet as soon as these networks have transitioned to proof-of-stake
Background
With a purpose to keep a wholesome peer checklist, nodes on Ethereum’s execution layer will routinely disconnect friends who don’t 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 best way to the most recent improve, Grey 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 top, this occurs routinely as nodes use the block top of upcomming upgrades to filter friends.
For The Merge, this was not doable as a result of the improve was triggered utilizing a whole problem worth fairly 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 in the course of the transition.
An attacker could use a minority of hash energy to construct a malicious chain fork that will fulfill the block top requirement. Then the primary PoS block could also be maliciously proposed on high of the PoW block from this adversarial fork, turning into the top and subverting the safety of the transition.
To guard the community from this assault situation, problem accrued by the chain (whole problem) is used to set off the improve.
To reduce adjustments to the protocol throughout its most advanced improve since launch, the design for The Merge excluded EIP-2124 compatibility. This implies a further improve should now be finished so as to add this. It is very important word that the one change launched as a part of this improve is specifying a block quantity that nodes can use to determine friends who’ve gone by 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 might 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 put up for extra particulars on their deprecation schedule.
Shopper Releases
Solely execution layer shoppers have to be up to date for this improve. Node operators can maintain working their present consensus layer shopper launch on Sepolia by the transition.
Be aware that shopper releases used for the Goerli/Prater merge all assist this improve on Sepolia. In different phrases, if you happen to 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 transformation is tracked as a part of the Paris specs, underneath the FORK NEXT Improve part.
FAQ
As a node operator, what ought to I do?
You need to improve your execution layer shopper to one of many variations listed above earlier than August 16, 2022. Your consensus layer shopper doesn’t have to be upgraded.
As a staker, what do I must do?
The validator set on Sepolia is permissioned. If you’re half of the present Sepolia validators, you need to replace your execution layer shopper to one of many variations listed above on August 16, 2022 on the newest.
If you’re not half of the present Sepolia validator set, you don’t want to do something right now.
Goerli/Prater and mainnet validators might want to comply with 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’re 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 person or Ether holder, is there something I must do?
No. The Ethereum mainnet will not be affected by this improve. Even when this improve might 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.
