I wanna know how many years bitcoin can exist, because what if i invest a big amount and the bitcoin will go to shutdown or going to close a blockchain system. This is my concern.
We cannot really say how long bitcoin will exist in the world. As long as the investors and any users would continue to invest and support the bitcoin, it might exist for a long period of time maybe for 50 years. People cannot really tell. Just always remember to secure your wallet and with that, it will not close the blockchain system.