> If it was, how secure would Bitcoin be? It doesn’t matter how easy/simple it is to derive a public key from a private key. What matters is how easy it is to

> If it was, how secure would Bitcoin be? It doesn’t matter how easy/simple it is to derive a public key from a private key. What matters is how easy it is to go in the opposite direction. As your link shows, it’s not that hard to do elliptic curve multiplication by hand, and there’s no need for it to be hard/complex.