Making regular payments more secure with dsproof Several years ago I invented an exciting concept of a Double Spend Proof. To understand what it is, let's first figure out what a double spend is. When I use Bitcoin Cash and I pay someone, I spend a coin, a coin is just a digital file and it is easy to copy. This raises the question if I could copy the coin and in that way get more money. *This is what the following video is about, you can skip the video if you prefer…