More than a pending testnet – The network Ethereum (ETH) is about to experience a size update by changing the consensus system. Thus, it will make a transition from proof of work to proof of stake. This will be done through a process called “The Merge”. While waiting for its publication on the mainnet, the transition to proof of stake is being actively tested on the various testnets. After Ropsten, it’s the Sepolia testnet which has just passed the proof of stake.
The Merge successfully deployed on Sepolia
sepolia is one of the Ethereum network testnets. As its nature suggests, this allows updates to be tested before they are released to the mainnet. Since the middle of June, the Sepolia testnet has been preparing for the transition to proof of stake. Indeed, on June 20, the developers deployed a exclusive beacon chain version to the Sepolia network.
This was the first step before the deployment of The Merge, the process which aims to merge the 2 layers of Ethereum. On the one hand, there is the consensus layer in proof of stake, namely the beacon chain. On the other, there is the Ethereum application layer as we know it.
Finally, on Wednesday July 6, around 4 p.m. (French time), The Merge was deployed on Sepolia. This deployment made it possible to pass the testnet in proof of stake.
Obviously, this transition is not trivial. Indeed, the knots of the 2 networks to merge, those of the consensus layer and those of the execution layer, must be perfectly synchronized.
Once The Merge is deployed, customers ofexecution layer will aggregate the transactions and communicate them to the consensus layer clients for verification and finalization.
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Minor issues during deployment
The deployment of fusion on Sepolia did not go without a few hiccups. Indeed, just after the transition, 20 to 30% of knots from the beacon chain met offline.
Fortunately, this problem had nothing to do with a bug. In fact, it was the deployment of a bad configuration for Lighthouse nodes.
The configuration of these nodes was then correctedmaking it possible to solve the problem and find a attendance above 90% network nodes.
The proof of stake at your fingertips from Ethereum
This success marks one more step before deployment on the mainnet. Indeed, after Ropsten and Sepolia, all that remains is to deploy The Merge on the Goerli testnet before tackling the mainnet.
Althoughno official date has not been revealed as to the deployment on the mainnet, the updated version of the official Ethereum site predicts the transition to proof of stake for the third or fourth trimester of the year.
In the meantime, the decline in ETH price coupled with a drop in activity has led to a drastic drop in fees on Ethereum. Indeed, transaction fees have returned to a level not seen since 2020.
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