# Data Layer:   All for the Data

"*Every data scientist should spend 80% of their time on data pre-processing and 20% on performing the analysis."*

As shown in Fig 1. , data plays a very important role in the whole AI workflow and is fundamental to AI blockchain—all dAI apps rely on high-quality data. We design and implement the DIN protocol to guarantee the network can obtain high-quality data by adopting an incentivized mechanism. 

This chapter will explain how the DIN protocol works for the network participants and how they can be rewarded for participating in the data activity. 

<figure><img src="/files/6SaiPNMYkI1lQafW4J2B" alt=""><figcaption><p>Fig 1.  AI workflow</p></figcaption></figure>


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