Deposit gets burned - Loss or cost?

Hi, I participate in the network. It’s a Certificate of Deposit system where you buy DRIP and deposit it. The Deposit gets burned and you never get it back, but you receive 1% Drip daily based on your initial deposit. Do I mark the initial deposit as Cost or as Loss?
Looking forward to your answer!
Kind regards

I did something similar and tagged the burning of some coins as a loss.