Bitcoin is an open source project, so any one can take the initial code, and tweak it, or refine it to their likening. This process gave birth to other crypro currencies, and eventually a market that runs remotely similar to the stock market. The difference being, that this market is decentralized. The crypto coins are traded upon coin exchanges. Bitcoin is the archetype, so all other coins are usually traded against Bitcoin, back and forth. From fiat, to Bitcoin, then from Bitcoin, to alternative crypto coins, and vice versa.
The laws for Bitcoin will vary from one jurisdiction to another, across one ocean, to the next. It is a borderless system, and is apart of "The Internet Of Things". The creator of Bitcoin is Satoshi Nakamoto, which could be a single entity, or a corporation of people. The truth is, nobody truly knows!
However, the work of the creator continues to operate, through the hands of all who have adopted the technology, and embrace it. Satoshi's will lives on...