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Sepolia Shapella Announcement | Ethereum Foundation Blog

Xiao Chen Sun by Xiao Chen Sun
March 10, 2023
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  • Withdrawals are coming! The Shapella community improve will activate on the Sepolia community at epoch 56832, scheduled for 4:04:48 AM UTC on Feb. 28, 2023
  • Stakers & node operators ought to learn this submit in addition to the Withdrawals FAQ
  • The Zhejiang testnet can be utilized to check Shapella performance previous to the Sepolia improve


After months of testing and an ephemeral devnet launch, the Shanghai/Capella (a.okay.a. Shapella) community improve is now scheduled for deployment on Sepolia.

This improve follows The Merge and allows validators to withdraw their stake from the Beacon Chain again to the execution layer. It additionally introduces new performance to each the execution and consensus layer.

Improve Specification

The Shapella improve combines adjustments to the execution layer (Shanghai), consensus layer (Capella) and the Engine API.

Shanghai

Execution layer adjustments included in Shanghai can be found here. For reference, they’re:

Notice that EIP-6049 is just a deprecation warning. Consumer groups count on SELFDESTRUCT semantics to vary in future community upgrades, however the opcode’s habits stays unchanged in Shanghai.

Moreover, the adjustments can now be seen within the Ethereum Execution Layer Specification (EELS), which is a brand new Python reference implementation for the execution layer.

Capella

Adjustments to the consensus layer for the Capella improve are specified within the capella directory of the v1.3.0-rc.3 specifications. At a excessive stage, the improve introduces:

  • Full and partial withdrawals for validators
  • BLSToExecutionChange messages, which permit validators utilizing a BLS_WITHDRAWAL_PREFIX to replace it to an ETH1_ADDRESS_WITHDRAWAL_PREFIX, a prerequisite for withdrawals
  • Impartial state and block historic accumulators, changing the unique singular historic roots

Stakers are inspired to learn the Withdrawal FAQ for extra info on how they need to put together for Capella.

Consumer Releases

The next consumer releases help Shanghai & Capella on the Sepolia testnet. Notice that these releases are solely for Sepolia. A subsequent announcement can be made for the Goerli and mainnet releases.

When selecting which consumer to run, validators must be particularly aware of the dangers of working a majority consumer on each the EL and CL. An explainer of those dangers and their penalties could be discovered here. An estimate of present EL and CL consumer distribution and guides for switching from one consumer to a different could be discovered here.

Consensus Layer Sepolia Releases


Execution Layer Sepolia Releases


Notice: go-ethereum has put out a brand new really useful launch, v1.11.2, for the improve. v1.11.1 can also be appropriate with the Shapella Sepolia improve.

FAQ

As an Ethereum consumer or Ether holder, is there something I must do?

In brief, no.

If you happen to use an change, digital pockets or {hardware} pockets, you don’t want to do something until you’re knowledgeable to take further steps by your change or pockets supplier.

If you happen to run your personal Ethereum node, see the “As a non-staking node operator, what do I must do?” part under.

As a non-staking node operator, what do I must do?

To be appropriate with the Shapella improve on the Sepolia testnet, replace your node to the model of your Ethereum consumer listed within the desk above.

As a staker, what do I must do?

To be appropriate with the Shapella improve on the Sepolia testnet, replace your node to the model of your Ethereum consumer listed within the desk above.

We suggest studying the Withdrawal FAQ. Moreover, you possibly can take a look at issues on the ephemeral Zhejiang testnet previous to the improve activating on Sepolia.

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

If you’re utilizing an Ethereum consumer that’s not 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 may be caught on an incompatible chain following the previous guidelines and can be unable to ship Ether or function on the post-Shapella Sepolia community.

As an software or tooling developer, what ought to I do?

Shapella doesn’t introduce breaking adjustments for good contracts. Software and tooling builders ought to evaluation the improve adjustments to make sure any fixes are carried out, or to grasp find out how to use newly launched performance.

Why “Shapella”?

Upgrades to the execution layer comply with Devcon metropolis names and people to the consensus layer comply with star names. “Shapella” is the mixture of Shanghai, the situation of Devcon 2, and Capella, the brightest star within the northern constellation of Auriga.


Cowl picture by Yiran Ding



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