The evolution of blockchain over the past year has been breathtaking. Although the technology is now more than ten-years-old, over the past couple of years its has moved out of a narrow use-case in cryptocurrency to a wider enterprise use-case where it is being used to store and protect data. However, there are literally hundreds of public blockchains at the moment and although they can be broken down in four principle types and are built using different components and pieces of code taken from a variety of sources, there are signs that in the future, organizations will be able to buy full stack blockchain products from one of the big vendors like Amazon Web Services, IBM Cloud or, unsurprisingly, Microsoft Azure.

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