Concordium and our friends from Cobra have participated in the Theory and Practice of Blockchains Seminar. You can watch Simon Kamp, Bernardo Magri, Christian Matt, Jesper Buus Nielsen, Søren Eller Thomsen and Daniel Tschudi's presentation "Leveraging Weight Functions for Optimistic Responsiveness in Blockchains.
https://www.youtube.com/watch?v=mfyTfr4xZT4