The Dencun community improve is scheduled to activate on the Goerli testnet at 6:32 UTC on January 17, 2024. The improve consists of a number of adjustments, most notably the introduction of ephemeral information blobs with EIP-4844, often known as “protodanksharding”, which is able to assist scale back L2 transaction charges.
Dencun follows final yr’s Shapella improve. It can first be deployed to the Goerli testnet. Then, if no main points are discovered, to Sepolia and Holesky. As soon as Dencun is operating easily on all three testnets, mainnet activation will probably be scheduled.
Dencun will probably be Goerli’s final improve. After it has been activated on mainnet, shopper and EF testing groups will cease supporting the Goerli testnet. For extra particulars, see this earlier announcement.
Improve Specification
The Dencun improve combines adjustments to each Ethereum’s consensus and execution layers. The complete checklist of protocol adjustments could be present in EIP-7569. For reference, they’re:
Deneb
Full python specs for adjustments affecting Ethereum’s consensus layer could be discovered within the deneb folder of the ethereum/consensus-specs repository.
Cancun
The EIPs linked above include the total specs for adjustments affecting Ethereum’s execution layer.
Moreover, a python specification for these is being carried out within the ethereum/execution-specs repository.
Lastly, Deneb requires adjustments to the Engine API, used for communication between the consensus and execution layer nodes. These are specified within the cancun.md file of the ethereum/execution-apis repository.
Shopper Releases
The next shopper releases assist Dencun on Goerli. Additional variations will activate assist on different testnets and mainnet. As soon as these are launched, one other announcement will probably be made right here.
When selecting which shopper to run, validators ought to be particularly conscious of the dangers of operating a majority shopper on both the execution layer (EL) or consensus layer (CL). An explainer of those dangers and their penalties could be discovered right here. An estimate of present EL and CL shopper distribution and guides for switching from one shopper to a different could be discovered right here.
Consensus Layer Goerli Releases
Observe: when operating a validator, each the Consensus Layer Beacon Node and Validator Shopper have to be up to date.
Execution Layer Goerli Releases
Observe: whereas Reth helps Dencun, the shopper continues to be pending a full audit and isn’t beneficial for manufacturing use. See the Reth README for extra context.
Dencun Bug Bounty Bonus
All Dencun-related bug bounties for in-scope vulnerabilities will obtain a 2x multiplier between now and two weeks previous to when the mainnet improve is scheduled to happen. Vital bugs are actually price as much as $500,000 USD! See the bug bounty program for extra particulars.
FAQ
As an Ethereum person or Ether holder, is there something I have to do?
In brief, no.
For those who use an change, digital pockets or {hardware} pockets you do not want to do something except you might be knowledgeable to take further steps by your change or pockets supplier.
For those who run your individual Ethereum node, see the following query.
As a non-staking Goerli node operator, what do I have to do?
To be suitable with the Goerli improve, replace your node to the model of your Ethereum shopper listed within the desk above.
As a Goerli staker, what do I have to do?
To be suitable with the Goerli improve, replace your node to the model of your Ethereum shopper listed within the desk above. Ensure that each your beacon node and validator shopper are up to date!
As a non-Goerli node operator or staker, what do I have to do?
Nothing for now. Additional bulletins will probably be made for Dencun’s activation on Sepolia, Holesky and mainnet. You possibly can signal as much as obtain an electronic mail alert for them right here.
Stakers who need to run via the improve course of extra instances earlier than mainnet are inspired to make use of ephemery.dev, which is able to quickly assist Dencun.
What occurs if I’m a Goerli staker or node operator and I don’t take part within the improve?
If you’re utilizing an Ethereum shopper that’s not up to date to the most recent model (listed above), your shopper 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 will probably be unable to ship Ether or function on the post-Dencun Ethereum community.
As an utility or tooling developer, what ought to I do?
Evaluation the EIPs included in Dencun to find out if and the way they have an effect on your challenge — there are numerous new thrilling options being launched throughout each the execution and consensus layers! The one EIPs with backwards compatibility implications are EIP-6780, EIP-7044 and EIP-7514.
The place can I observe the improve taking place?
The Goerli improve will probably be livestreamed right here.
Why “Dencun”?
Upgrades to the consensus layer use star names, and people to the execution layer observe Devcon metropolis names. “Dencun” is the mixture of Deneb, a first-magnitude star within the Cygnus constellation, and Cancun, the placement for Devcon 3.
Unique cowl picture by Darren Lawrence, with modifications by Tomo Saito.
