The metaverse can be broadly defined as a blockchain-fueled, all-encompassing virtual world that offers new human and socio-cultural experiences. It epitomizes decentralized and immersive social experiences that often involve virtual reality (VR) and augmented reality (AR), opening up an entirely new set of opportunities for social interaction. No single company or application defines the metaverse, and users can use a single, portable identity among metaverse apps.