You might have heard of blockchain as the technology that underpins the virtual currency bitcoin. It has the potential to fundamentally revolutionise many business-to-business interactions. Blockchain is a distributed database that creates a ledger of transactions, and its beauty is in its distributed nature. Because all nodes in the database must tally up, it is less susceptible to fraud, and its method for recording transactions means they can never be erased. Blockchain is used as the basis of currency transactions for bitcoin and can also be used for storing health records and contracts or even public voting.