What's a POAP? How Memories Are Being Transformed in Web3
POAPs are used to mark participation or attendance at an event. Just like you might save ticket stubs from concerts or movies, buy pins at a sporting event or festival, or collect matches from restaurants or hotels, a POAP is a digital version of that same notion, satiating our desire to collect items that mark our experiences throughout life.
Source: howtogeek.com