I imagine in this thread I know the least about the technical aspects of cryptocurrencies and this may be a bit off topic, but when bitcoins reached $1,200 I was curious to know how secure they were, so I gave my kid a task. He had 2 hours to see how many bitcoin addresses he could generate while checking each one for a positive balance. He found 3 accounts that contained many many bitcoins, I was so tempted to take them, that I had to delete his internet history.