Companies are collecting more data than ever before, and are making significant business decisions based on it. Of the 4 Vs of Big Data (Volume, Velocity, Variety, and Veracity), we have now seen ample evidence of the impact and importance of the first three. A higher “Volume” of data has led to more efficient decision-making in numerous instances, such as in programmatic marketing and in banking. Research has shown how leveraging high “Velocity” data — such as data from mobile devices — has unearthed knowledge that has helped firms better understand their customers. The significant potential of high “Variety” data — data that is unstructured in the form of text, images, videos, and so on — to make better predictions has been documented in numerous academic studies. But what about issues related to the accuracy, reliability, and transparency of the data itself, which basically comprises the fourth V, “Veracity”? In the field of data-driven marketing, an answer to addressing this limitation lies in blockchain technology.