Ethereum’s Dencun Upgrade Successfully Deployed on Sepolia Testnet

Ethereum developers have successfully implemented the Dencun (Deneb-Cancun) hard fork on the ecosystem’s second test network, Sepolia.

Sepolia has finalized! ?
Sorry for an uneventful upgrade? https://t.co/86HXWRGO7a

— terence.eth (@terencechain) January 30, 2024

“Sepolia is complete. Apologies for the uneventful upgrade,” wrote lead developer Terence Tsao.

On January 17, the deployment of the upgrade on the Goerli testnet caused a chain split. The Ethereum team managed to make the necessary changes and finalize the hard fork within four hours.

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

Blobs are now flowing in Sepolia 😀

Uneventful testnet forks are the best ones! https://t.co/HTTVwYcytm pic.twitter.com/Al45RZz95B

— parithosh | ???? (@parithosh_j) January 30, 2024

“Blobs are flowing in Sepolia. Uneventful testnet forks are the best!” commented Parithosh Jayanthi from the Ethereum Foundation.

The upgrade is scheduled to be deployed on the third testnet, Holesky, on February 7. Following this, developers will set a date for the mainnet hard fork.

Back in April, the previous Ethereum update, Shapella (Shanghai-Capella), was implemented on April 13, 2023. This upgrade enabled validators to withdraw ETH from staking.