 Hello everybody, my name is Mario and I'm here to talk about our work. It's actually a joint work Between two labs from input output labs one in the edumbra University of edumbra with the mitris caracostas and a galos kajias and myself on the other side of the world in Tokyo tech Tokyo technology And I was going to say the blockchain labs, but the cryptocurrency labs is better anyway Okay First of a brief introduction to our lab in Japan. It was established last year We are based in okayama campus in Tokyo not center like us Kurds of Tokyo and Usually we invite some people friends from from the campus and or abroad some of you here that have already visited us and Usually we offer coffee. We definitely do not drink alcohol on Fridays And there is also this word in Portuguese as length Brazilian Portuguese. I know there's some Portuguese people here in the audience before they correct me which means Is that slang for a Comfortable place slightly messy and that's how we like to see our workplace and it's it's it's spelled well it's it's called kafofo and We have a problem actually we're struggling to get a shorter name for for our workplace because if you see in the picture We have a kind of long name for our lab the input output cryptocurrency Collaborative research here in English in Japanese in my opinion is even worse because it's longer It's input output Ango tsuka kyo doki kyu koza. It's long so too long So we are trying to get a word for that and which may be meaningless for most of people But for us it would be For us and for a small group of people will people will understand it so we we actually we call our office cofe fe because sounds like kafofo and coffee and Well, so one of the work that we study at cofe fe on cofe fe. I'm not sure It's about POS based protocols the the the idea the problem that we are studying here is that in POS It's in comparison to proof of work. We have this The users depend to be selected to participate in the consensus protocol depends on the how much kind they have it and It's it's it can be harmful to the to the security of the protocol if not many participants join the protocol and So for example, it's so the consequences that the participants need to be online to do it and meet some people don't want to or or Or avoid it or so it's in but in principle everybody who has a coin is supposed to participate so one way to go out of this is To to allow delegations. So if I know it I know I know it has some coins can delegate to some other participants to act on your behalf during the protocol and as as some some the consequence is that There's some pools that accumulate these stakes. So that might be a problem because we have this Higher rate of nodes who has most of the stakes Exchanges also are a problem because it's a potential problem because they also naturally accumulated. So from from those those those items you can see that There might there there there's some problem protection problems in our goal as Research projects to come up with this list of requirements that is that Defines a good POS protocol and also come up with a framework to tackle these all these issues so far we come up with this list of requirements about like 14 items and That is pretty much there are no outline of what we have done And we come up with definitions for assets and dresses and also we associate addresses where attributes And and and also we come up with this idea of functionality for the secret of what that aqua wallet would would work and a generic protocol and some constructions to constructions to be exact and also it's got some operation modes for wallets who need to implement it anyway Our research is online not yet on a print. It's on the IHK website if you feel free to take a look on it and Yeah, that's that's all I have it Thank you very much