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uh so good morning everyone welcome to the session about signatures we have three talks in this session and um the first speaker or the first uh presentation is about locally verifiable signature and key aggregation this is the joint work of rishab goyal and we not by kundalini and rishabh will give the talk so mark for the introduction uh am i a little loud or is that okay okay it feels a little loud to me uh yeah so thanks a lot for being here especially after the drum session it was a late night and everybody could make it itamp;#39;s a larger audience than i was expecting but okay so today iamp;#39;m going to tell you more about locally verifiable signatures and pre-aggregation so the starting point of this talk is digital signatures which we need no introduction they are one of the most basic and fundamental building blocks of cryptography and basically using digital signatures we can sign messages digitally such that they cannot be forged they cannot be d by anybody else and th