9th and last lesson of the Blockchain Class by cicr at University of Havana, MATCOM.

8th lesson of the Blockchain Class by mauricio1802 at University of Havana, MATCOM.

7th lesson of the Blockchain Class by e1Ru1o at University of Havana, MATCOM.

6th lesson of the Blockchain Class by e1Ru1o at University of Havana, MATCOM

This poap shows that we've met somewhere at some point. It will be distributed to people who've met me, and are in contact.

4th lesson of the Blockchain Class by e1Ru1o at University of Havana, MATCOM.

3rd lesson of the Blockchain Class by e1Ru1o at University of Havana, MATCOM.

3rd lesson of the Blockchain Class by e1Ru1o at University of Havana, MATCOM.

3rd lesson of the Blockchain Class by e1Ru1o at University of Havana, MATCOM.