Two interesting pieces on the dangers and uselessness of blockchains:

  • Bruce Schneider responding to comments made by Matthew Green on a letter written by academics and professionals to the US Congress urging them crically approach cryptocurrencies.
  • A rather polemical lecture from a computer security course by Nicholas Weaver on blockchain and cryptocurrencies: [http://web.archive.org/web/20220625191347/https://www.youtube.com/watch?v=J9nv0Ol-R5Q].