Comet (CMT) cryptocurrency is formally accounted on the number of ratings.. However, there is no up-to-date official information about its current status. Therefore, we can conclude that the coin is currently inactive.
Elastos (ELA) is a mineable coin currently represented on a few Asian exchanges. Blockchain solutions of the issuing company can be applied across various industries, such as real estate, media, etc.
CRYPTO20 (C20) is an “autonomous token-as-a-fund” and represents an Ethereum-based token. As of now, it is trading on a few exchanges with HitBTC being the most active exchange platform on its list. CRYPTO20 are so-called close-ended tokens. It means that no new tokens can be created. CRYPTO20 can only be purchased.