First proposed as a research project in 1991, blockchain has reached its late twenties. Like most millennials of its age, blockchain has seen its fair share of public scrutiny over the past two decades and businesses around the world have begun to speculate about what the technology can do and where it is heading in the coming years. Blockchain has increased its popularity considerably thanks to Bitcoin. … And the question is no longer whether large companies will use the Blockchain system. The question is now, "When?"( they will become a bitcoin integrated company.)