This question actually made me to update this post.

• Can Blockchain exist without cryptocurrencies??

Answer

Yes! When It comes to data files and catalog.. One or Governments can make use of the Blockchain to store vital data and information for years without even having any cryptocurrency. But there should be a cryptocurrencies to fuel and compliment blockchain technology.

Record keeping.

Personal information can be stored and assessed in blockchain at anywhere any time for free.. It is completely decentralized.

Blockchain can help us achieve the idea of cashless economy!!

Everything you need to know about the event can be found here
https://steemit.com/steem/@mediahousent/the-growth-of-steem-community-is-going-mainstream-in-africa-steemit-in-nigeria-annual-festival-is-an