Hi, this is the concept of 
These challenges inspire me to make a logo for you with the concept of a round as a globe and the circle with the letter C as Crypto, I hope this logo was able to offset the Steem blockchain and I am trying to design a logo that will run in website and can also be used as a thumbnail or avatar with size some pixels. So I try to make it for you.
300 Pixel
Regard
@azkadzaky