**2.2 Applications of Blockchain**

Blockchain was originally employed in cryptocurrencies, with Bitcoin being the first to demonstrate its success. There are numerous Blockchain applications today, as summarized in the following **Figure 3**:

#### **Figure 2.**

*Types of Blockchain [9].*


#### **Table 1.**

*Differences between types of Blockchain [10].*

To be more specific, the following list will explain a little bit about the importance of the use of Blockchain in the most important domains [6]:


### *Information Systems Management*

**Figure 3.** *Blockchain applications tree [6].*

