I've never done it but it can look like this. You borrow DAI against BTC. You send DAI to a EU licensed exchange and sell for EUR. You send EUR to your bank which asks POF. You show the loan, print some PDFs from the DeFi website. The f off. Then you buy a house with this money. Same story, you show the loan and the exchange tx history. Then you pay off the loan with your other BTC. Banks/Notary don't have procedures to continue checking if you still have the loan. That's why ChatGPT keeps saying it's not a taxable event when I am asking wtf is DeFi good for.Aren't all these secured loans? I mean if they accept a DeFi loan they should have some kind of knowledge of how those work and look in to the collateral and ask how you earned that.