How SegWit solved the quadratic sighash problem

Why write about SegWit in 2019? SegWit is one of the most discussed topics in the history of Bitcoin and rightfully so. The solution to a multitude of Bitcoin’s problems was surprisingly effective. The activation, on the other hand, was a rollercoaster. Additionally, it is a very complex topic that requires you to spend a significant amount of time with it in order to get a complete understanding of its mechanics and implications. »