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open-sourcing a no-longer-used atomic arbitrage bot for ethereum dexes

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Update: Sept 19, 2020: if you deployed and used this code your bot will likely be eligible to claim UNI. Send me a message if you need help claiming.

AtomicArbBot

I'm open-sourcing an atomic arbitrage dex bot I don't use anymore. I will eventually document this more completely.

The basic concept is the "Controller" script would scan pending transactions that would find guarenteed profitiable arbitrage opportunities between Uniswap, Oasis/Eth2Dai, Bancor, and Kyber. I no longer had time to keep optimizing it against increasing competition so turned it off. Sharing now out of general interest.

There are two main parts:

  1. ArbBot.sol: a fairly well written contract that would revert if the oppportunity was not profitiable. Clever enough to use GasToken to reduce costs.
  2. Controller.js: a somewhat bloated and jankily written script connected to a local node that would scan for opportunitites and dispatch them to the ArbBot. It got the job done but could use a major refactor with consistently written modern javascript and way less code duplication.

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open-sourcing a no-longer-used atomic arbitrage bot for ethereum dexes

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