Hi there!
So, there are various lending platforms as well as there have been plenty. Personally I have not used a single one and have only heard negative experiences from people. Though, I'm sure there are some legit ones out there! I know NEXO for example has already got their platform live and you can register at
nexo.io.
Though I would be careful and do a lot of research before using them & never invest more than you can lose.
So, each platform has their own terms and agreements and rules. Besides that, usually every platform also has different periods, meaning you can either choose the amount of days/months you want to enable your funds to be loaned out for, or there is a preset amount of days/months.