Here's a financial innovation that has gold bug and crypto skeptic Peter Schiff sounding the alarm: using your Bitcoin stash to buy a house. It's a new mortgage program that lets you pledge your crypto as collateral, and Schiff thinks it's creating a sweet deal for crypto holders at everyone else's expense.

The setup involves a partnership where Fannie Mae (FNMA) is getting into the crypto-backed mortgage game through Better Home & Finance Holding Co. (BETR) and Coinbase Global Inc. (COIN). Here's how it works: you get a regular mortgage for the house, and then you take out a separate second loan that's backed by your Bitcoin (BTC) or USDC sitting in a Coinbase account. The whole point is to let crypto investors buy real estate without having to sell their tokens and trigger a capital gains tax bill.

Sounds clever, right? Peter Schiff thinks it's a little too clever. He took to social media to point out what he sees as the fundamental flaw.

"Fannie and Freddie guaranteeing mortgages with pledged Bitcoin as the only down payment means HODLers get a free ride. If Bitcoin keeps going up, they keep all the gains. If Bitcoin crashes, they walk away from their mortgages, sticking the GSEs and taxpayers with huge losses."

Think about it like this: if your Bitcoin moons, you get to keep all that appreciation while living in your new house. If it tanks, you can just hand the keys back to the bank and walk away, leaving Fannie Mae or Freddie Mac (FMCC)—and by extension, taxpayers—holding the bag. Schiff's argument is that the program seems to have all the upside for the borrower and all the downside for the public entities backing the loans.

This is launching into a mortgage market that's already getting pricier. The 30-year fixed rate just hit a six-month high of 6.38%, with rates climbing for four straight weeks thanks to inflation jitters from oil prices and Middle East tensions. The crypto-backed part of these loans uses a 40% loan-to-value ratio, which is supposed to be a buffer against Bitcoin's famous volatility. But if you're Peter Schiff, that cushion might not feel thick enough when you're worried about taxpayers ultimately being on the hook.

The timing is interesting for another reason. This crypto mortgage push comes just as investors like Bill Ackman and Michael Burry have been publicly urging an end to the government conservatorship of Fannie and Freddie, calling on former President Donald Trump to recapitalize them. Meanwhile, personal finance personality Dave Ramsey has been warning that record personal debt is making it impossible for young people to buy homes. This new program seems designed for the "asset rich, cash poor" crowd—people who have a pile of crypto but not enough traditional cash for a down payment.

So you've got a perfect storm of financial engineering: a workaround for crypto taxes, a solution for cash-strapped buyers with digital assets, and a controversial structure that has a prominent economist crying foul about risk transfer. It's one of those financial innovations that looks brilliant if everything goes right and disastrous if it doesn't. And Peter Schiff is pretty sure he knows which way that bet is tilted.