A bug in a previous version of Geth caused the Ethereum mainnet’s split. The old client is being blocked from the main network. This could lead to double-spending or loss of funds for users.

  • Go Ethereum just tweeted that a bug afflicting the old version of Geth has caused the Ethereum mainnet to fork. He encourages all nodes immediately to upgrade to the latest version, 1. 10.8, which was announced just days ago.


    A chain split occurred on Ethereum’s mainnet. This issue was fixed in the v1. 10.8 release announced previously. If you have not already, please update your nodes!

    — Go Ethereum (@go_ethereum) August 27, 2021

  • Though most miners are mining on the current version and there is no threat of a hard fork, Ethereum developer Tim Beiko suggests that the Flexpool, BTC.com, and Binance pools have been mining on the old, unsecured version.
  • Ethereum may not be the only one affected. Other chains could also be affected by the bug and are open to exploiting it, such as Binance Smart Chain (BSC), Polygon and DAI.
  • Rumors are circulating on Twitter that the BSC has already been impacted as well.
  • The fork has reportedly caused 54% of nodes to split from the Ethereum main net.
  • At the time of writing, the ETH gas prices are significantly higher than the average.
  • Developers are urging users of Ethereum to avoid doing any transactions on the Ethereum network for a while until things are resolved. You might also want to avoid major transactions on related chains.
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