This is Planet Money from NPR.

A few months ago, we were in the middle of a crypto frenzy, not the first time.

Millions of people had just watched the Super Bowl where several crypto companies ran big ads.

People were calling it the crypto bowl.

And all of these celebrities were hyping it up from LeBron James to Larry David.

And in the middle of all that froth, we got an email from a listener named Mark Musci,

who lives in Philadelphia.

So, I am a realtor and a investor.

Got my license when I was 18.

And are you pretty good at it?

You know, I'd like to think so.

Mark was writing to us because he was just about to put a house on the market, a property he bought to flip.

And unlike other houses he sold, this one would come with something unique of the moment.

Echriptocurrency minor, built into the house.

You know, like a device that generates new crypto that could then be exchanged for actual cash.

And he's made this cryptocurrency minor sort of like cabinets or countertops, a permanent fixture.

This will be the first crypto fixture ever being sold in the world.

Mark, how do you know that this is the first time ever?

I cannot fact check that 100%.

I can't either, but I'm going to say it until someone else proves me wrong.

And then I will gracefully say, okay, I guess I was number two.

But until then, I'm going to go ahead and claim it.

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