Ethereum team migrates Ropsten testnet to Proof-of-Stake consensus
The Ethereum development team will migrate the Proof-of-Stake (PoS) consensus algorithm. According to the project’s assessment, less than half an hour remains until the testnet’s merger with the Beacon Chain.
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The migration process of Ropsten to PoS has completed, according to Ethereum lead developer Tim Beiko. The first transactions have already been included in the updated test network.
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We do have some missing block proposals, which was a known issue before. Now, client teams will dig into the specifics across each combo 👀 expect a proper update by AllCoreDevs this Friday!
— Tim Beiko | timbeiko.eth 🐼 (@TimBeiko) June 8, 2022
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Beiko noted that after the merger, the team identified issues with validators proposing new blocks. He said that developers are examining each incident and will report results on Friday.
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Some users have also reported node desynchronization on the Nethermind client.
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My Nethermind node is out-of-sync.
— tobbykitty.eth 🐼 (@TobbyKitty) June 8, 2022
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As anticipated, the Merge would occur in several stages. On May 30, developers deployed the blockchain’s consensus layer — the Beacon Chain.
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Ropsten beacon chain genesis was a success! 🎉
Few validators are offline and expected due to testing,
anyone can follow the progress here: https://t.co/ukRaNFpyzP pic.twitter.com/TU61t5lC78— terence.eth (@terencechain) May 30, 2022
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On June 2, in slot #24,000, the team activated the Bellatrix upgrade, designed to prepare the Beacon Chain for the Merge with Ropsten. Developers set the Terminal Total Difficulty (TTD) parameter at 50×1015.
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TTD is the network’s cumulative difficulty up to the requested block. The parameter is typically used to prevent unwanted forks — the client is configured to support the fork with the higher value.
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As of writing, the TTD on Ropsten stands above 49×1015. The time required to reach the threshold directly depends on the network’s hash rate.
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![\"The](\"https://forklog.com/wp-content/uploads/ttd.png\")
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It is expected that after the network reaches this milestone, the Merge will begin. The next block can only be mined by a Beacon Chain validator. The migration is considered complete after this block.
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After the completion of the process, the PoS transition will be extended to the Goerli and Sepolia test nets as well. This will take several weeks.
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Once the execution layer has exceeded the `TTD`, the next block will be solely produced by a Beacon Chain validator.
The Merge is considered complete once this block is finalizes.
After Ropsten, other testnets (Goerli & Sepolia) will also transition to PoS in the coming weeks.
— pastry (@PastryEth) June 8, 2022
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In May 2022, one of the leading Ethereum developers, Preston Van Loon, stated that the Ethereum transition to PoS would take place in August.
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