The portion of tokens each purchaser must use, and what they have to do in order to ‘prove use’, depends on the USD($) amount of tokens purchased in the sale as outlined below:
Small Buyers (below $10,000):
must use at least 25% of FOAM tokens purchased in the token sale
must add at least 10 points of interest to the map
Large Buyers (above $10,000):
must use at least 50% of FOAM tokens purchased in the token sale
must add at least 10 points of interest to the map
For Proof of Use we recommend to use Signaling to fulfill the percentage of tokens required to be used. For more information see these articles: https://mapguide.foam.space/signaling
Note: There is a module in the dapp to query the Token Controller to see if you have fulfilled Proof of Use.