I gave a talk at TABConf 2019 introducing Bitcoin Script, the virtual machine bytecode which is built into bitcoin. The slides are available online, and the source is also on GitHub. Bitcoin Script For BeginnersBitcoin Script For Beginners – a presentation at TABConf on February 10, 2019 by Jason Dreyzehner.OdyseeThe
My (long) talk about Bitauth at the Atlanta Blockchain January 2017 Meetup. For a written summary, see the Bitauth2017 specification. Part 1Authenticating Bitcoin Transactions (slide →) Part 2Static Authentication vs. Scriptable Authentication (slide →) Part 3Scriptable Authentication & the Blockchain (slide →)Why use Bitcoin Script? (slide →)Why use the Blockchain for identities?