Although their long$-$term utility and sustainability remains to be seen, cryptocurrencies are a hugely interesting application of many modern cryptographic principles. The first cryptocurrency, Bitcoin, was announced in $2008$ and launched in $2009.$ This gave it a considerable first$-$mover advantage. Although it is no longer the most sophisticated cryptocurrency system in existence, it is the most widely used. The aim of this assignment is to develop a working Bitcoin blockchain viewer application. This should be similar in spirit to existing viewers such as the Blockchain Explorer, although the scope and complexity is expected to be much smaller. The application should display blocks as they are mined by the Bitcoin system. For each block, it should display