dTokens

When users supply fungible or NFT assets, they receive dTokens from the protocol in exchange. dTokens are ERC20 tokens that can be redeemed for their underlying assets at any time.

dTokens for NFTs don't earn interest and can only be usable as collateral.

Fungible tokens can accrue interest, dTokens are redeemable at an exchange rate (relative to the underlying asset) that constantly increases over time, based on the rate of interest earned by the underlying asset.