Hi Folks
Is this thing -> https://www.nationalbitcoinatm.com real for people?
Do they know about or think about digital currency?

If so, the bitcoin prop adds to our options beyond contemporary, historical, foreign, and fictional.

Jonathan:

I suspect that you know as much as me, but I'll answer for others that may read.

"Bitcoin" is a digital form of a currency wanna-be. AS such it has a value only as long as people are content in accepting its current "price". Hence, its value can go "poof" at any time (some what like the stock market - but stocks represent real money making companies, and you are sharing in their profitability ).
Further, because most of us are not too familiar with what a bit coin is, nor how it "works" people are susceptible to FRAUD.

Yet, it is possible to buy a "bit coin", but it is NOT a physical item, the amount of bit coins you own, only exists in some electronic memory, somewhere.

All that said, there are man-made coins that will be stamped with a big "B", and some look pretty impressive, and could be interesting props for doing magic (I think the main effect I personally would do with such, would be to make it disappear, or transform to a worthless coin; to illustrate what may happen to their bit coin balance. In other words, it is not wise to accept "bit coins" for payment.

And that is my 2 bit coin's worth
John

Yes this is about props for magic. The question remains whether such props are workable for audiences.

Other items from our world, such as poker chips, chocolate coins, mardigras tokens... may be about the right size yet don't tend to have the heft or make a good sound when dropped into a glass or bucket.