Ethereum’s Dencun Upgrade Goes Live, But Fails to Finalize on Testnet

Developers said the missed finalization was likely due to an expected lack of participation and older network validators.

AccessTimeIconJan 17, 2024 at 7:43 a.m. UTC
Updated Jan 26, 2024 at 5:33 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

Ethereum’s much-awaited Dencun upgrade went live on the Goerli testnet earlier Wednesday but failed to finalize in the expected time.

The upgrade was pushed at 6:32 UTC, blockchain data shows, but did not initially finalize on the testnet.

A few hours later, Ethereum core developer Parithosh Jayanthi confirmed that the chain was finalizing again, and told CoinDesk over Telegram that the issue was due to a bug, now patched, in Prysm nodes.

Finality refers to irreversibility once a transaction has been confirmed and added to a block in a blockchain network. A testnet is a network that mimics real-world blockchains and is used to test applications and important upgrades before they can be pushed live on a mainnet.

Dencun’s implementation of Goerli is part of a three-phased approach to eventually enacting a new, less costly method of storing data on the main Ethereum blockchain.

That method, “proto-danksharding,” is a mechanism that will add capacity for data availability as well as help reduce the cost of transactions for layer-2 blockchains. These auxiliary networks have proliferated in the past year as an alternative to processing transactions on the main Ethereum blockchain, but analysts say their growth is hampered by the steep data costs under the current setup.

The next phase will happen sometime in the next few weeks, with an upgrade to the Sepolia testnet, followed by the Holesky testnet.

Dencun will be the biggest upgrade – technically a “hard fork” in blockchain terminology – for Ethereum since the Shapella upgrade last March, which enabled the withdrawals of staked ether [stETH]. That milestone marked the second step for Ethereum’s transition to a proof-of-stake blockchain, away from the more energy intensive proof-of-work chain that it was before the Merge.

UPDATE (Jan. 17, 08:15 UTC): Adds additional details.

UPDATE (Jan. 17, 14:49 UTC): Updates that the blockchain is finalizing again.

Edited by Parikshit Mishra.

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 offers all employees above a certain salary threshold, including journalists, stock options in the Bullish group as part of their compensation.

Shaurya Malwa

Shaurya is the Deputy Managing Editor for the Data & Tokens team, focusing on decentralized finance, markets, on-chain data, and governance across all major and minor blockchains.

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.


Read more about