Micropub is now a W3C Recommendation:

https://www.w3.org/TR/2017/REC-micropub-20170523/

The Micropub protocol is used to create, update and delete posts on
one's own domain using third-party clients. Web apps and native apps
(e.g., iPhone, Android) can use Micropub to post and edit articles,
short notes, comments, likes, photos, events or other kinds of posts on
your own website.

micropub is a product of the W3C Social Web Working Group

https://www.w3.org/wiki/Socialwg/