A lot of FOSS software’s websites are starting to use it lately, starting from the gnome foundation, that’s what popularized it.
The idea of proof of work itself came from spam emails, of all places. One proposed but never adopted way of preventing spam was hashcash, which required emails to have a proof of work embedded in the email. Bitcoins came after this borrowing the idea
A lot of FOSS software’s websites are starting to use it lately, starting from the gnome foundation, that’s what popularized it.
The idea of proof of work itself came from spam emails, of all places. One proposed but never adopted way of preventing spam was hashcash, which required emails to have a proof of work embedded in the email. Bitcoins came after this borrowing the idea