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# System prepended metadata

title: Ethereum node upgrade plan to support The Merge

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# Ethereum node upgrade plan to support The Merge

*Assuming [this doc](https://www.notion.so/fazzfinancialgroup/Ethereum-Node-Set-up-And-Upgrade-8d78b8d1f8b84aee9ccaec1e5c60d10f) is up-to-date*

Refer to timeline of The Merge from [official announcement](https://blog.ethereum.org/2022/08/24/mainnet-merge-announcement):
![The Merge timeline](https://storage.googleapis.com/ethereum-hackmd/upload_aa804448c0b15c877035c523d6ae948a.png)


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## Plan tasks & timeline

- **Before Sept 6** (Bellatrix)
    - Upgrade `SGDX BlockChain ETH MainNet Blue` (**Blue** for short) instance to latest EL client (Geth v1.10.23)
    - Test and switch to use `Blue` instance, stop `SGDX BlockChain ETH MainNet Green` (**Green** for short)
- **Before Sept 10** (Paris)
    - Upgrade latest Geth client **AND** install a concenses client (e.g Pryms or Teku as recommendation) on `Green` instance
    - Test and switch to use `Green` instance, stop `Blue` instance

- **During and After The Merge (Sep 10-20)**
    - Test & verify Blockchain middleware functionality