Cap — Modern, lightning-quick PoW captcha

Completely Automated Public Turing Test to tell Computers and Humans Apart, or CAPTCHA, those little tests you get at times to find an image or decipher a number, have largely been circumvented by either dark patterns involving relaying the tests to other humans or AI. This library takes a different approach using a proof-of-work scheme and is even easier on the end user. All of these methods are a form of proof of humanity, which is a deceptively hard problem and getting harder with more advanced technology.