Blockchain provides a decentralized database , or “digital ledger”, of transactions that everyone on the network can see. This network is essentially a chain of computers that must all approve an exchange before it can be verified and recorded.
Bitcoin was the first cryptocurrency created utilizing blockchain technology. Cryptocurrency is a completely digital form of money with no physical backing, such as gold, dollar or other currencies. It is not backed by any government or central monetary authority. It is handled solely by those who use it rather than going through a middle man, like a bank or a payment processor. This allows for a quicker, less costly way for businesses, organizations, and individuals to electronically transfer money to and from each other.
In this course you will learn the fundamentals of cryptocurrency technology and how to use it.
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http://www.tracston.com/Blockchain.php
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