Ethereum tests first mainnet shadow fork in anticipation of Proof-of-Stake 🚨 This article is 3 years old...
Ethereum tests first mainnet shadow fork in anticipation of Proof-of-Stake
Ethereum's "shadow fork" has over two million wallets connected to it and has completed around 4 million transactions.
2 min read
Updated: Apr. 12, 2022 at 3:44 pm UTC
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Ethereum’s (ETH) transition to a proof-of-stake (PoS) consensus network is creeping closer after the network launched the first mainnet shadow fork on April 11.
Ethereum’s PoS shadow fork goes live
According to one of the developers on the project, Paritosh Jayanthi, the purpose of the shadow fork is to stress test the assumptions on syncing and state growth. Ethereum will use the shadow fork to test theories about the existing testnets and the mainnet.
The merge pandas have arrived!
mainnet-shadow-fork-1 hit TTD ~half an hour ago. We've been finalizing and producing blocks!We quickly noticed some seemingly minor issues with Nethermind and Besu(triage ongoing). Erigon is currently syncing to head, status update later. https://t.co/iJFtZTp7UU pic.twitter.com/9GxPp8dFzs
— parithosh | 🐼👉👈🐼 (@parithosh_j) April 11, 2022
The shadow fork is part of the multistage process designed to move the Ethereum mainnet to a PoS consensus algorithm. The transition — dubbed “The Merge” — is scheduled to occur in the second quarter of 2022, with most of the prerequisite work already done.
The shadow fork is a significant step in the success of The Merge. Ethereum developer Tim Beiko stated that its outcome is crucial to determining the timing of the final Merge.
Next Monday, devs are planning to shadow fork Ethereum mainnet to test the Merge. @TimBeiko emphasized the outcome of this shadow fork will be important to deciding Merge timing.
— Christine Kim (@christine_dkim) April 7, 2022
Before this fork, developers have already completed several milestones. In March, Ethereum launched the Kiln testnet merge, which combined a PoW execution layer with a PoS Beacon Chain. The Kiln test was the last merge testnet before the final move to PoS.
So far, the shadow fork has nearly 4 million transactions and completed over 14.5 million blocks at an average block time of 14.2 seconds. Additionally, almost 2 million wallets have been connected to the network.
We're very close to a historical event. We're testing PoS on #Ethereum. Today will be the first mainnet shadow fork ever. We're roughly 690 blocks (~2 h) away from TTD. Follow here: https://t.co/T20ZMgApYw or https://t.co/Uod8WBsqtw
Huge props to @parithosh_j! #TestingTheMerge pic.twitter.com/M8ZcHnKqaL— MariusVanDerWijden (@vdWijden) April 11, 2022
Developers identify some issues
But the developers have noticed issues with Hyperledger Besu and Nethermind. The number of validators has also dropped, although there’s still enough to meet the mining requirements.
According to Jayanthi, some transactions could appear on the Ethereum main network and the shadow fork because they have some data in common.
Developers on the project have described the shadow fork as a historical event. While it’s on a grander stage now, this isn’t the first time that shadow forks would be used. Ethereum Foundation has earlier tried it on the Görli testnet.
A move to PoS will significantly affect Ethereum and the entire crypto industry as it is expected to help reduce the energy consumption of the blockchain by up to 99%. The transition is expected to help Ethereum become more scalable, further cementing its position as the top blockchain for DeFi and NFT activities.
Thus, crypto enthusiasts are keenly watching the developments and the circumstances surrounding the arrival of the Merge.
Author 
Oluwapelumi Adejumo
Oluwapelumi values Bitcoin's potential. He imparts insights on a range of topics like DeFi, hacks, mining and culture, underlining transformative power.
