Blockchain is a much talked about technology and is now relatively well established in the financial sector as a secure form of payment transfer – and the basis of all cryptocurrencies, which has also driven consumer adoption. But what is often less well reported is its significant potential as a transformative technology in a multitude of healthcare settings. Its immutability makes it not only suitable for traceable financial and token-based transactions, but also as an ideal tracking and security platform for both patient records and the pharmaceutical supply chains amongst a multitude of emerging applications. Raja Sharif at FarmaTrust discusses what blockchains are, the different types and why they have so much potential in healthcare settings as the technology matures.