 So, hi everyone, so I'm going to present a general proposal with Ardun Kulman. So you all know the blockchain, you all know the proof of work and there's an ongoing concern about the fact that proof of work are difficult to produce and you're going to solve a challenge that's more or less useless in the sense that finding a nonce so that for a fixed prefix the hash of the nonce and the prefix is going to have enough zero that's not really helpful and so that's a waste of time and energy and also what you do is reference only the previous block so if for some reason this block is dropped all your work is for nothing so what we are proposing is proof of ability. So proof of ability the interesting idea is that the challenge is going to be any open cryptographic problem so that if you solve it in some way you are contributing to science that's great you don't want we don't want to have a linear flow you are going to reference several previous blocks so that's even if one of those block fails you're still going to exist and that's going to end when there are no new crypto problems so hopefully not soon and that's nice every time you solve a problem you are going to create one or more new problems so normally it's never going to end so how are we going to do that in fact the solution already exists so proof of ability is going to be something that can fit into roughly 30 pages you can use unlimited data appendices that nobody is going to read and you can in fact ignore them then those proofs you're going to bundle them together because that's nice and you are going to want to proceed them so that you're going to go that some proceedings and you want to publish them so we're going to use a deputy publisher so if you that's an authority so if you translate it into German you're going to end up on Springer Ferdag and now that we've gone paperless for the proceeding we can produce light written odyssey of cryptography solutions so the famous LNCS series so that's quite nice you produce one new block every year but you are going to be able to run several blockchain concurrently so you can do cross-reference between the block and the blockchain so that's quite a neat feature so however that's still a work in progress so there are still many improvements that we can do so in the crude models there's no really direct reward for the block reviewers and in fact it's only the publishers that's getting all the credit and literally the credit behind the payroll the variability sometimes should be improved because some of the block and are going to be dropped and one of the main question is how many blocks should we wait before considering that the block is going to be secure and one of the work that's still going to be that's can still be debated is are the program committees like proof of cryptographic stake and which community is going to win the next conference so I hope you paid attention during the revisions there has been some reference from new block generation and don't forget to submit and contribute to the great crypto blockchain thank you