4DLimitOrder

In this project, I used CoWSwap Programmatic Orders Framework, to develop a totally new type of limit order. Normal limit orders take:

• amount to trade
• a time window
• a fixed price target

4-dimensional limit orders take:

• amount to trade
• a time window
• a target price which can change over time

This simple addition means that you can more accurately model your trading intents. 4D Limit orders are flexible enough that they are a superset of many other order types, including: normal limit orders, market orders, dutch auctions, normal auctions. With a single 4D Limit order you can even model more complex preferences, such as an increasing time-preference. If we open up to 2+ 4D Limit orders, you can automatically trade an ascending channel pattern (buying low and selling high). Previously this would require coding skills to build a bot.

The code for the order type itself is in my fork of the CowSwap/composable-cow github repo (for easier development setup). there are unit tests for it, as well as a deployment script to test it out and run orders.

The order is deployed on Gnosis Mainnet, at: 0x1989fd64aa8883c221f5c09ef58d673347a4c3cf (https://gnosisscan.io/address/0x1989fd64aa8883c221f5c09ef58d673347a4c3cf)

Below, I've linked the order execution script, which creates a simple 4D Limit order (acting as a delayed market sell), to show how to set one up. But there are a few other files in the repo as well (see the commit log).

• Setup script: https://github.com/earlyxyz/composable-cow/blob/main/script/submit_SingleLimit4D.s.sol
• Order type code: https://github.com/earlyxyz/composable-cow/blob/main/src/types/Limit4D.sol

Future Work: I had started to build a small frontend visual order-building tool, but ran out of time, so I'd love to continue that, and finish it.