In this series of posts I’m solving the exercises of Programming Bitcoin1 in Haskell, I’m learning Bitcoin and Haskell in one go. To describe a point in the elliptic curve, we need four data points. \((x, y)\) are the coordinates themselves, additionally we need the constants \((a, b)\) that define the elliptic curve given by the equation \(y^2 = x^3 + ax +b\). Finally, there is the special case of the point at infinity, which does not really fit in the previous constrain. In other langua...
