Since I found a working and screen reader-accessible PoW-based captcha which is super easy to implement on a site and people have been telling me to switch from RecaptchaV3 for years, I had a reason to write Verity, a tiny and super fast server for Altcha. Feel free to check it out and contribute should you wish to. This is currently the most feature-complete and secure implementation of an Altcha server to date to my knowledge. #captcha #altcha #free