As it stands right now, PoPP distribution will last for at least 10 years. We have capped the total amount of Pop that we are distributing to users via PoPP at 7,200 Metal tokens (MTL) per day. Pop is distributed in blocks of 10 minutes. We distribute a maximum of 50 MTL every 10 minutes, which gives us our 7,200 MTL daily cap.
The original amount of MTL in the PoPP issuance pool is 26,341,112. You can check the remaining number of MTL in the PoPP issuance pool.
If you want to learn more about Pop and PoPP, please read our three volume blog series.