The last step brought all the pieces together and yielded an overview of blockchain as a whole, highlighting the interdependency of its underlying technical concepts. As a result, we concluded that blockchain is a complex and highly sophisticated technical construct. It can be said without exaggeration that it is the masterpiece of an ingenious mind. However, blockchain is neither perfect nor free of limitations. Hence, this step highlights and explains the major limitations of blockchain and why these limitations pose significant hurdles to its commercial use. Finally, this step sketches how the limitations of blockchain can be overcome.