TWAMM has a minimum expiry interval of 5 blocks, which is equal to approximately 1 minutes, which means that every integer multiple of 5 blocks in height, we also call it
Order Block Interval
. The long-term orders in the order pool are due for settlement and the user's swap proceeds are updated.
Order Block Interval (OBI) is an explicit parameter on the Pulsar solidity implementation. It specifies the number of blocks between the execution of virtual orders and explicitly limits temporal resolution for specifying trades. The temporal resolution limitation arises because the length of an Term Swap is expressed in integer multiples of the OBI.