Ethereum Developers Implement Dencun Hard Fork on Holesky Testnet

The Ethereum team has successfully implemented the Dencun (Deneb-Cancun) upgrade on the Holesky test network.

Holesky successfully upgraded to Deneb!
The first few blocks are in. So far, so good!?

— terence.eth (@terencechain) February 7, 2024

“Holesky upgraded to Deneb without issues. The first few blocks are ready. So far, so good!” wrote lead developer Terence Tsao.

During the weekly All Developer Execution Call on February 8, the team is expected to set a date for the hard fork activation on the mainnet of the second-largest cryptocurrency by market capitalization.

A key component of the update is EIP-4844, which includes the Proto-Danksharding option. This is designed to scale the network by creating a new type of transaction for large binary data arrays (BLOB). It is anticipated to reduce fees for Rollup-based L2 solutions by approximately tenfold.

On January 17, the activation of Dencun on the Goerli testnet (for the consensus layer, like Holesky) resulted in a fork of the network. Developers resolved the issue within about four hours.

The deployment of the upgrade on Sepolia (execution layer) on January 31 proceeded smoothly.

“Sorry for the uneventful update,” Tsao commented at the time.

Back in April, the previous Ethereum hard fork, known as Shapella (Shanghai-Capella), was implemented on April 13, 2023. The upgrade enabled validators to withdraw ETH from staking.