Ethereum will undergo a Cancun upgrade on the Sepolia and Holesky testnets in early February, and the mainnet will be launched by the end of February at the latest

Ethereum’s next major upgrade, Dencun, has been launched on the largest test network Goerli on January 17, according to the latest announcement from the Ethereum Foundation narrate. It is reported that in the next two weeks, the Sepolia and Holesky test networks will undergo Dencun upgrade as planned.

After Goerli completed the Dencun hard fork upgrade on January 17th

• Sepolia: Dencun will be activated at Epoch 132608, which is expected to be on January 30 UTC time 22:51 (6:51 am Beijing time on January 31st)

• Holesky: The upgrade will be launched at Epoch 29696, and the time point is expected to be UTC time 11 on February 7 :35 (7:35 pm Beijing time on 2/7)

According to the Ethereum Foundation, if the subsequent upgrades of Sepolia and Holesky go smoothly, the next step is to launch the Ethereum mainnet Start the Dencun upgrade. Previously, the foundation revealed that the upgrade would be implemented as early as the end of February.

The word "Dencun" is a combination of the Mexican cities Cancun and Deneb, and is used to describe the upgrade that occurs at the Ethereum execution layer. This upgrade includes rule changes for all protocols, and the consensus layer for block verification will have its own fork, which is called "Deneb." Therefore, "Dencun" refers to the combined name of these two upgrades.

Goerli Cancun Upgrade Problem

However, it should be noted that when Ethereum developers performed the Dencun upgrade on the Goerli test network on January 17, they encountered an insufficient number of participating validators. and bifurcation issues. Fork means that different nodes have different versions of the transaction history of the blockchain. To resolve this issue, the development team has conducted further testing and investigation.

Ethereum core developer Tim Beiko said that if more Goerli validators do not upgrade in the future, "non-final testing" will be possible, which will help understand the network's performance when validator participation is low. How would the situation work.

EIP-4844’s blob will significantly reduce L2 fees

This Dencun upgrade of Ethereum includes multiple updates. The core proposal that receives the most attention is EIP-4844: Proto-Danksharding, which passed Introducing a new transaction type (blob carrying transaction) to greatly improve the scalability of Ethereum and is expected to reduce Layer 2 transaction costs by 10-100 times; in addition, other upgrades will also help to further reduce handling fees and network congestion .

Tim Beiko said this month that after the Goerli test network completed the Dencun upgrade, some blobs have been transmitted on the network, but most of the blobs currently transmitted are empty.

Blobs are a new transaction format, introduced through EIP-4844 (protodanksharding), used to "temporarily" store transaction data (blobs can be deleted after 18 days), enhancing the data storage capacity of Ethereum. This has the potential to further reduce transaction fees on layer 2 networks.

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