Why are Unchained's interest rates higher than other lenders?

Unchained doesn't rehypothecate your bitcoin held as collateral.

Some lenders rehypothecate, or lend out, the bitcoin held as collateral for their loans,  resulting in lower interest rates and origination fees for their loans. Unfortunately, the trade-off made to save a couple of bucks is the risk of total loss of bitcoin collateral

While Unchained loans do cost more, the risk of total collateral loss due to rehypothecation is wholly eliminated, ensuring that if the loan is repaid and the margin maintained, collateral is returned to the borrower. You can read more about rehypothecation in our Ultimate Guide to bitcoin-backed loans.