// challenge
what is prosopo procaptcha?
a captcha-widget challenge; used by prosopo; mints the procaptcha-response, verified via the prosopo provider api token; escalation: friction-less pow (default) → image-select challenge on a suspicious session. privacy-preserving captcha combining background proof-of-work with an optional image challenge; recaptcha/hcaptcha alternative with a decentralised/web3 provider model.
source capture undated
in the benchmark
prosopo procaptcha is tracked as part of the challenge taxonomy. see how tracked tools score against it on the capability matrix.