Bitcoin is hard to explain. I also experienced difficulties in understanding bitcoin for the first time. Let's share how to explain bitcoin to children of teenagers. In my country, I can say that 98% of children do not know bitcoin. In fact, bitcoin can be future money. If children are not familiar with cryptocurrency or bitcoin, how they might face the digital age in the future.
You should teach your child about it when they are ready. i think we should teach our children when they knew about money and understand about it. i believe new generation are more easy to teach and more easy to learn about cryptocurrency. If reallly there will be digital age near us i believe there should be and will be a proper education for our child that will help them understand and ready to face digital currency (cryptocurrency).