Cryptography is becoming more important in our every day lives and there’s no way around it. Whether it’s the calls from governments to ban encryption, come up with “responsible encryption”, or to violate norms and laws, cryptography is playing a role in shaping our society. I’d like to approach the role of cryptography from the other perspective though, from the side of helping us prove facts about the world around us. We are entering an era where technology empowers people to crea...