Blockchain patent rights belong to the first to file a patent application and already the patent space for this dynamic area of technology is being filled up as patents are sought for innovative blockchain technology and its uses. To see what sort of thing JP Morgan Chase decided to patent - check out this link: https://patents.google.com/patent/US20180121911A1/en?oq=US20180121911A1 

So if you are a startup using blockchain don't forget to consider if anything you do might be patentable.  If you leave it too late, it might end up being covered by someone else's patent...