We do not have our keynotes' presentations available for on-demand viewing. Unfortunately, contracts with keynote speakers generally do not allow for us to record and share their presentations. All the breakout sessions we did record and are able to share are going up on the Congress BrightTALK channel this week at https://www.brighttalk.com/channel/7711/
We're working on another great keynote lineup for Congress 2020! congress.isc2.org
We have uploaded video content from Congress 2019 sessions. You can check for the latest videos here: https://www.isc2.org/news-and-events/webinars/security-congress
Let us know if any questions!