Thanks in advance for the answer
How can topic about Bitcoin be way to narrow? I don't get it. You can write about the blockchain technology in essence. You can write about its decentralized nature and why is it important for the world and the humanity in general. Then you can write about the all aspects of finances that Bitcoin can and probably will improve in the future.
You can write about how this is only a 4th or 5th money revolution in like forever besides, barter, precious metals, money, plastic credit cards, and now trustless money which Bitcoin is.
I gave you just some pointers, there is really so many things to write about out there. Just use your imagination and research.