Ask and you shall receive. It isn't anything out of the ordinary for the series. Here's the front design, and the back would be the same as the 10oz silver round (same die used to stamp even).
Sadly this 20oz .9999 gold coin never found it's way into reality. It would have been/is the final coin to complete the minted series set and would have been the counterpart to the 10oz .999 silver coin. It's been 5 years now and Bitcoin has increased in value quite a bit. Maybe there's some folks out there that might be interested in being owners of the greatest crypto coin ever created and helping me finish turning a pipe dream into reality by completing this series. I haven't gone over costs or anything with the mint, but a good estimate range with today's BTC value would probably be ~1.5 BTC. If that sounds like something you'd be interested in being a part of, shoot me a PM. I figured I'd toss the idea out here. No more than 3 would be created and likely only 1 if I'm the only person who wants to see these exist. Don't let me have a 1 of 1.