I'm part of Slimcoin community. What is Slimcoin? It's a fork of Peercoin, with main innovation of new block generation consensus - Proof-of-burn. It also have hybrid consensus - actually there are 3 types of minting: POW, POS and POB. For more info please refere to our site (it's still a "spartian" styled, and I'll upgrade it in near future).
http://slimco.in/We are open-source community, if you want to join, I'll give you links to slack and bitcointalk thread.
Whitepaper:
http://www.slimcoin.club/whitepaper.pdfI can also link to some scientific publications, where Proof of Burn and Slimcoin, where mentioned.