Sure, thanks for the heads up. I do mostly crypto posts, with a few steem/steemit ones sprinkled in from time to time as well.

This one might fit?

https://staging.busy.org/@jrcornel/the-biggest-winner-of-the-last-decade-wasn-t-netflix-facebook-or-even-amazon-it-was-bitcoin

or perhaps some of my recent steem ones...

And to answer your question, nothing is backing US dollars except the US federal government (and their army). At some point that will be an issue, especially when other countries decide they no longer want to accept something that can be created out of thin air. Which may already be happening.