How Can I Send You A Christmas Present, But For You Not To Cheat and Open It? … Time-lock Puzzles and Proof of Work
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8 min readNov 13, 2021
So how might we make sure that someone does not open their present until Christmas Day? Well, one way is to get them to do some work to open it, and that we know it will only be done within a certain amount of time — such as with the days there are until Christmas. So, let’s look at an area…