Before Minswap launched, 80% of all FISO rewards were given out in the form of MINt, only 20% in MIN itself. The intention behind MINt is to encourage people to utilize the protocol and interact with the DEX. This is done by entering the MINt-to-MIN conversion process, which will require you to stake your MINt for a vesting period of at least 45 days. MINt has a 1:1 conversion rate to MIN. You are free to do this at any point in time from now until April 16th 2023. After that, the MINt token will become worthless, as you will not be able to convert it to MIN any more.