What are the various uses of blockchain? and how it can be used differently??
There are many uses and they are in progress, for instance, for medical records, for public enterprises... I recommend you to read the Chapter 9 of the 2018 Joint economic report of the US, they make a debate about crypto, about the blockchain tech and how it can be used:
https://www.congress.gov/115/crpt/hrpt596/CRPT-115hrpt596.pdfAlso, it will give you a general idea of what are they thinking about regulations and how the blockchain tech is seen by the US Congress.