The collateral for crypto loans depends on the lending platform you use. Some websites require collateral, while others don’t. Those who set collateral often make borrowers deposit some crypto amount. The collateral is usually in the currency they are loaning. Bitcoin loans that do not require collateral operate on the basis of trust. This appears hazardous, but most businesses have safeguards in place to assure loan security and repayment. These measurements may differ from one company to another. All of these steps will be included in the company's terms and conditions.