epheph / EIP-712-swap-PoC

EIP-712 swap PoC

Uses strongly-typed signed messages to send "Uniswap orders" to a block builder (e.g. Flashbots).

Helpful stuff

• contracts/ and backend/ require that you cp .env.example .env and modify the contents to suit your needs

• yarn start will run backend and frontend.

• cd contracts/ && yarn deploy-goerli

Tokens with Uniswap liquidity on Goerli

Token	Address
MNY	0x7ebC3778cF08f636805D9382D6c16e79ed9F370E
MNY2	0x3041EfE098e2cde8420DD16c9fBF5bde630f6168
PMNY	0xeBa14FbBbf1B10e7dB7EA5cAdDD52160aa8873f3
WETH	0xB4FBF271143F4FBf7B91A5ded31805e42b2208d6

graph edges represent existing liquidity pools:

TODO

• verify signed message
• upgrade signed message type to V4
• write smart contract (validator/executor) to decode tx and verify signature
• send to uniswap from (validator/executor)
  • implement v2 functions, use SwapRouter (v2 + v3) if possible
• send (validator/executor) tx to flashbots (not important for PoC)