SubSquare is proposing to add DOT as a foreign asset on Zeitgeist and allow it in pools to help with liquidity issues. DOT is worth 7 billion dollars and can be easily transferred to the chain. DOT has 10 decimal places like ZTG, so it can be used in markets without any adjustments. DOT integration was tested on all technical levels and approved to move forward on the mainnet. You can see and interact with the prediction market that uses (fake) DOT as a base asset. Fees are charged in DOT when receiving it from Polkadot on Zeitgeist, and the amount charged is derived from the ZTG and DOT price averages.