Felix Mukungu (@MukunguFelix) lost money to crypto scams before he ever taught Bitcoin. Then he started sharing a nine-chapter Bitcoin course in a WhatsApp group. That course grew into The Core (@thecore21m). Today it runs a free Bitcoin Diploma on the @MyFirstBitcoin_ curriculum. Four intakes a year. 24 sessions each. Every graduate leaves with a certificate and 500 sats. The first cohort graduated 10 people. The sixth graduated 137. 643 have finished it so far, 520 of them from Kenya. The rest come from 27 other countries, from Zambia and Nigeria to the USA, Canada and Afghanistan. Some graduates started new projects. Others took what they learned back to projects they already ran. Among them: @bitcoingithurai, @BitcoinSchoolKe, @EcoBitz_21m, @btcafricastory, @yesbitcoinhaiti, and many others across Africa and beyond. In Githurai, the Nairobi settlement where Felix once lived, The Core has onboarded 16 merchants. Boda riders, food vendors and shops. Students travel there to spend their sats. Some days the merchants see zero payments, while some days they see nine. In April, The Core's unconference in Nairobi drew more than 500 people. About 80% were youth with over 18 local Bitcoin projects presented. It started in a WhatsApp group.