Ethereum's 'Dencun' Upgrade Goes Live on Second Testnet, With Just One Remaining

Next week, on Feb. 7, Dencun will go live on its final Ethereum testnet, Holesky. After that, developers will ink in a date to activate Dencun on the main blockchain.

AccessTimeIconJan 31, 2024 at 1:11 p.m. UTC
Updated Mar 8, 2024 at 8:46 p.m. UTC
10 Years of Decentralizing the Future
May 29-31, 2024 - Austin, TexasThe biggest and most established global hub for everything crypto, blockchain and Web3.Register Now

The Ethereum blockchain's biggest upgrade since early 2023 went live on the second of three test networks, bringing the much-anticipated "Dencun" project and its "proto-danksharding" feature a step closer to reality.

Proto-danksharding is designed to reduce the cost of transactions for layer-2 blockchains as well as make data availability cheaper, through the introduction of a new compartmentalized space for data known as "blobs." The number of layer-2 chains atop Ethereum is expanding fast, so the upgrade is seen as an essential element of the ecosystem's roadmap for supporting the growth.

The Dencun upgrade on the Sepolia testnet occurred Thursday at 22:51 UTC (5:51PM ET) and finalized at 23:10 UTC.

Sepolia is the second of three testnets to run through a simulation of Dencun. Earlier this month, Dencun went live on the Goerli testnet, but initially failed to finalize.

Next week, on Feb. 7, Dencun will go live on its final Ethereum testnet, Holesky. After that, developers will ink in a date to activate Dencun on the main blockchain.

Testnets duplicate a main blockchain, and allow developers to make any changes to the protocol or to its decentralized applications in a low-stakes environment.

Dencun, which was originally projected to happen in the final quarter of 2023, will be the biggest upgrade for Ethereum since the Shapella upgrade last March, which enabled the withdrawals of staked ether (ETH).

Edited by Bradley Keoun.

Disclosure

Please note that our privacy policy, terms of use, cookies, and do not sell my personal information has been updated.

CoinDesk is an award-winning media outlet that covers the cryptocurrency industry. Its journalists abide by a strict set of editorial policies. In November 2023, CoinDesk was acquired by the Bullish group, owner of Bullish, a regulated, digital assets exchange. The Bullish group is majority-owned by Block.one; both companies have interests in a variety of blockchain and digital asset businesses and significant holdings of digital assets, including bitcoin. CoinDesk operates as an independent subsidiary with an editorial committee to protect journalistic independence. CoinDesk employees, including journalists, may receive options in the Bullish group as part of their compensation.

Margaux Nijkerk

Margaux Nijkerk reports on the Ethereum protocol and L2s. A graduate of Johns Hopkins and Emory universities, she has a masters in International Affairs & Economics. She holds a small amount of ETH and other altcoins.


Learn more about Consensus 2024, CoinDesk's longest-running and most influential event that brings together all sides of crypto, blockchain and Web3. Head to consensus.coindesk.com to register and buy your pass now.