Hi everyone and welcome to my Homework post Week 7. This is an outstanding lecture giving lot of details, thanks to Professor @sapwood. I have learned all new things. Honestly speaking, I have learned all new things from this lecture.
As we learned from the lecture that there are 20 witnesses and 1 backup witness who carry out tasks like creation, signing transactions and network security. As the study suggest that in next 10 years, earning steem reward will be harder than now.