concept of Blockchain

This week's discussion centers around the concept of Blockchain.  There is still much confusion regarding what Blockchain is and what it is not.  Please discuss your explanation of Blockchain to include why it has been gaining so much popularity.

. A substantive post will do at least two  of the following:

• Ask an interesting, thoughtful question pertaining to the topic
• Answer a question (in detail) posted by another student or the instructor
• Provide extensive additional information on the topic
• Explain, define, or analyze the topic in detail
• Share an applicable personal experience