Atlético de Madrid is currently ranked 2nd by UEFA in Europe! They join other 4 major clubs PSG, Juventus, West Ham, AS Roma, on Chiliz's Socios platform.

Official announcements:

https://en.atleticodemadrid.com/noticias/atletico-de-madrid-join-socios-com-platform (English)
https://www.atleticodemadrid.com/noticias/el-atletico-de-madrid-se-une-a-la-plataforma-socios-com-2 (Spanish)