Dear @dappuser

Interesting choice of topic buddy. Solid introduction to those who aren't aware of blockchain yet.

To do this, blockchain users have to use their respective keys and powerful computing systems to run algorithms that solve very complex mathematical problems. When a problem is solved, the block is added to the chain

Well, this is where usually people will stop you and ask 'what mathematical problems'? And guess what? Your answer will probably not be good enough and from that moment you will witness lack of trust towards this topic.

I think it's better not to mention this 'magical mathemathic problems' that blockchain is solving - simply because it doesn't sound convincing.

Upvoted already :)
Yours, Piotr