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Improve collision management (ethereum-lists#2181)
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ligi authored Jan 25, 2023
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@@ -87,8 +87,11 @@ There are also aggregated json files with all chains automatically assembled:

## Collision management

If different chains have the same chainID we list the one with the oldest genesis.

We cannot allow more than one chain with the same chainID - this would open the door to replay attacks.
The first pull request gets the chainID assigned. When creating a chain we can expect that you read EIP155 which states this repo.
All pull request trying to replace a chainID because they think their chain is better than the other will be closed.
The only way to get a chain reassigned is when the old chain gets deprecated. This can e.g. be used for testnets that are short lived. But then you will get the redFlag "reusedChaiID" that should be displayed in clients to warn them about the dangers here.

## Usages
### Wallets
* [WallETH](https://walleth.org)

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