Imagine buying a luxury handbag online and being 100% sure it’s real. Not because the seller told you, but because the bag’s entire trip from factory to your doorstep is stored in a public, unchangeable digital record. That is the power of blockchain in marketing. In this chapter, we’ll explore how blockchain technology is helping brands build trust, stamp out fraud, automate partnerships, and protect your privacy, all without asking you to trust a single middleman.