And both Amir and Eric are probably hands down the 2 most intelligent people in the Bitcoin space
Its a complete alternative implementation of the Bitcoin standards written in C++. Sp unlike Knots it *isn't a fork of Core.
I think Amir started it, I know he was an active developer for a long time.
Erik Voriskuil is the lead maintainer now.
Those are the famous guys anyway.
heres the 411
https://bitcoinmagazine.com/business/what-libbitcoin-and-sx-are-and-why-they-matter-1376064919
