https://kusama.subsquare.io/referenda/615
- This update fixes the KSM and DOT exchange rates on Kusama Asset Hub.
- The rates were lost during a system move and need to be set again.
- It removes old, unused KSM rate information.
- It adds new exchange rates between Kusama and Polkadot Asset Hubs.
- The KSM to DOT rate is set at 4 to 1, just like before.
- Rates are stored using special large numbers for accuracy.
- This helps the treasury system work correctly with KSM and DOT conversions.

