Goerli Dencun Announcement

• The blobs are coming: Dencun volition spell unrecorded connected Goerli astatine 6:32 UTC connected January 17, 2024.
• Dencun volition beryllium Goerli's past upgrade earlier halfway teams halt supporting it. More connected this successful a previous post.
• Assuming the Goerli upgrade goes well, the Sepolia and Holesky testnets volition activate Dencun implicit the adjacent fewer weeks.
• To person an email alert for web upgrade announcements, subscribe here.

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The Dencun web upgrade is scheduled to activate connected the Goerli testnet astatine 6:32 UTC connected January 17, 2024. The upgrade includes respective changes, astir notably the instauration of ephemeral information blobs with EIP-4844, besides known arsenic "protodanksharding", which volition assistance trim L2 transaction fees.

Dencun follows past year's Shapella upgrade. It volition archetypal beryllium deployed to the Goerli testnet. Then, if nary large issues are found, to Sepolia and Holesky. Once Dencun is moving smoothly connected each 3 testnets, mainnet activation volition beryllium scheduled.

Dencun volition beryllium Goerli's past upgrade. After it has been activated connected mainnet, lawsuit and EF investigating teams volition halt supporting the Goerli testnet. For much details, spot this previous announcement.

Upgrade Specification

The Dencun upgrade combines changes to some Ethereum's statement and execution layers. The afloat database of protocol changes tin beryllium recovered successful EIP-7569. For reference, they are:

• EIP-1153: Transient retention opcodes
• EIP-4788: Beacon artifact basal successful the EVM
• EIP-4844: Shard Blob Transactions
• EIP-5656: MCOPY - Memory copying instruction
• EIP-6780: SELFDESTRUCT lone successful aforesaid transaction
• EIP-7044: Perpetually Valid Signed Voluntary Exits
• EIP-7045: Increase Max Attestation Inclusion Slot
• EIP-7514: Add Max Epoch Churn Limit
• EIP-7516: BLOBBASEFEE opcode

Deneb

Complete python specifications for changes affecting Ethereum's statement furniture tin beryllium recovered successful the deneb folder of the ethereum/consensus-specs repository.

Cancun

The EIPs linked supra incorporate the afloat specifications for changes affecting Ethereum's execution layer.

Additionally, a python specification for these is being implemented successful the ethereum/execution-specs repository.

Lastly, Deneb requires changes to the Engine API, utilized for connection betwixt the statement and execution furniture nodes. These are specified successful the cancun.md file of the ethereum/execution-apis repository.

Client Releases

The pursuing lawsuit releases enactment Dencun connected Goerli. Further versions volition activate enactment connected different testnets and mainnet. Once these are released, different announcement volition beryllium made here.

When choosing which lawsuit to run, validators should beryllium particularly mindful of the risks of moving a bulk lawsuit connected either the execution furniture (EL) oregon statement furniture (CL). An explainer of these risks and their consequences tin beryllium recovered here. An estimation of existent EL and CL lawsuit organisation and guides for switching from 1 lawsuit to different tin beryllium recovered here.

Consensus Layer Goerli Releases

Note: erstwhile moving a validator, some the Consensus Layer Beacon Node and Validator Client indispensable beryllium updated.

Execution Layer Goerli Releases

Note: portion Reth supports Dencun, the lawsuit is inactive pending a afloat audit and is not recommended for accumulation use. See the Reth README for much context.

Dencun Bug Bounty Bonus

All Dencun-related bug bounties for in-scope vulnerabilities volition person a 2x multiplier betwixt present and 2 weeks anterior to erstwhile the mainnet upgrade is scheduled to instrumentality place. Critical bugs are present worthy up to $500,000 USD! See the bug bounty program for much details.

FAQ

As an Ethereum idiosyncratic oregon Ether holder, is determination thing I request to do?

In short, no.

If you usage an exchange, integer wallet oregon hardware wallet you bash not request to bash thing unless you are informed to instrumentality further steps by your speech oregon wallet provider.

If you tally your ain Ethereum node, spot the adjacent question.

As a non-staking Goerli node operator, what bash I request to do?

To beryllium compatible with the Goerli upgrade, update your node to the mentation of your Ethereum lawsuit listed successful the array above.

As a Goerli staker, what bash I request to do?

To beryllium compatible with the Goerli upgrade, update your node to the mentation of your Ethereum lawsuit listed successful the array above. Make definite some your beacon node and validator lawsuit are updated!

As a non-Goerli node relation oregon staker, what bash I request to do?

Nothing for now. Further announcements volition beryllium made for Dencun's activation connected Sepolia, Holesky and mainnet. You tin motion up to person an email alert for them here.

Stakers who privation to tally done the upgrade process much times earlier mainnet are encouraged to usage ephemery.dev, which volition soon enactment Dencun.

What happens if I americium a Goerli staker oregon node relation and I bash not enactment successful the upgrade?

If you are utilizing an Ethereum lawsuit that is not updated to the latest mentation (listed above), your lawsuit volition sync to the pre-fork blockchain erstwhile the upgrade occurs.

You volition beryllium stuck connected an incompatible concatenation pursuing the aged rules and volition beryllium incapable to nonstop Ether oregon run connected the post-Dencun Ethereum network.

As an exertion oregon tooling developer, what should I do?

Review the EIPs included successful Dencun to find if and however they impact your task --- determination are galore caller breathtaking features being introduced crossed some the execution and statement layers! The lone EIPs with backwards compatibility implications are EIP-6780, EIP-7044 and EIP-7514.

Where tin I travel the upgrade happening?

The Goerli upgrade volition beryllium livestreamed here.

Why "Dencun"?

Upgrades to the statement furniture usage prima names, and those to the execution furniture travel Devcon metropolis names. "Dencun" is the operation of Deneb, a first-magnitude prima successful the Cygnus constellation, and Cancun, the determination for Devcon 3.

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Original screen representation by Darren Lawrence, with modifications by Tomo Saito.