Ethereum's Shadow Fork Test Successful Ahead of Proof of Stake Upgrade (The Merge)
![](https://en.ethereumworldnews.com/wp-content/uploads/2022/03/IMG_6129-50x50.jpg"></p><ul><li>Ethereum’s latest upgrade from a proof-of-work network to a proof-of-stake blockchain passed a key test phase</li></ul><ul><li>The process dubbed The Merge was successfully trialed on a private mainnet staging area known as a shadow fork</li></ul><ul><li>The event is one of two test stages before the upgrade ships to the public mainnet</li></ul><ul><li>While desired results were achieved, a few minor obstacles remain</li></ul><p>Core Ethereum engineers deployed a crucial Merge test on Monday ahead of the much-anticipated switch to a proof-of-stake blockchain network. According to a Github post published by Tim Beiko, an Ethereum developer, the event happened on a so-called shadow fork mainnet. </p><div class=)
As the transition to a PoS consensus mechanism represents a massive overhaul of the Ethereum network, developers have spent months picking out the bugs and finetuning the process.
Ethereum engineer Tim Beiko stressed the importance of running a shadow fork test first before proceeding with The Merge. Beiko released a post saying:
Shadow Forking mainnet is incredibly useful because it shows us how nodes react in the harshest possible conditions: when their state and history are large and transactions are the most complex. After a mainnet shadow fork, we can also test how stable nodes are, how well they sync, etc. when trying to join the forked network. This gives us data not only on the transition itself but also on how new nodes behave when they join the network in a post-merge state
While the shadow fork test to ascertain cross-chain node operability from Ethereum’s main execution layer and its Beacon chain consensus mechanism was successful, a member of the Ethereum foundation Parithosh Jayanthi noted that two clients blocks recorded some difficulties.
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
However, network engineers are reportedly working to solve the issue and plan to redeploy the shadow fork again on April 22, 2022.
Ethereum Prepares for The Merge
Prior to the latest shadow fork test, Ethereum engineers ran a demo of The Merge process on the Kiln testnet back in March. The trial was also a huge success and showed that combining the main Ethereum network and its parallel Beacon chain is possible.
However, the test encountered a few issues, per a thread from Ethereum developer Marius Van Der Wijden.
As of the time of writing this report, no concrete timelines have been announced regarding when the upgrade will go live. However, Galaxy Digital analyst Christine Kim opined that the shadow fork’s results play a major role in determining the timeline for 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.
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