Exchange: https://graviex.net/markets/umbbtc

Website: http://umbracoin.net/

Github: https://github.com/UmbraCoin/UMBRA

Announcement: https://bitcointalk.org/index.php?topic=5061687.0

Discord: https://discord.gg/2JJT7xJ

Twitter: https://twitter.com/umbrachain

Explorer: http://45.63.76.241:99/