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It used to be very simple to send a private transaction on Ethereum.

My aim is to perform a trade which would be fontrun if it was sent in the mempool or shared with all miners.
As there’s no way to protect the transaction I’m planning to perform, how to simply send my transaction privately simply using the usual web Zrx frontend ?

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There are several miner extractable value (MEV) service provides that offer frontrunning protection. They operate in a similar fashion as Taichi. Some of the famous include

You use the service provider JSON-RPCs to broadcast the transaction and they have cut deals with mining pools.

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    None of them are compatible with web browser extensions like Taichi was… Commented Nov 7, 2021 at 15:12
  • I updated my answer with Flashbots, can you check if it works for you Commented Nov 7, 2021 at 19:27
  • Flashbosts isn’t the kind of thing you use in the browser. It requires ɴᴘᴍ. A nightmare to install on Windows. Eden network isn’t free. Commented Nov 7, 2021 at 21:55
  • I added a screenshot from the instructions how to set an RPC endpoint. Did you read the linked instructions? Commented Nov 7, 2021 at 22:01
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    No, with Taichi network, the transactions were only shared with SparkPool. And SparkPool could be trusted to not mess up with the submitted transactions up to some extent. Commented Nov 8, 2021 at 12:39

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