Wow, it's amazing to see the progress made in this edition of @MyfirstBitcoin_ in #Cuba! The student's refutation of Bitcoin as a Ponzi scheme and its negative environmental impact was impressive. Furthermore, the discussions on network attacks, cryptography, and cybersecurity were insightful. Kudos to the organizers and professor for their dedication, and if you'd like to support these classes, consider donating to miprimerbitcoincuba@getalby.com!