Currently, the payout address is the ETH address held in your Cent account. Any secondary royalties will go to this address. Currently, you can check the balance (if there is one) by copying that address and checking on https://polygonscan.com. We are in the process of building tools to let you withdraw money from that address, as well as set a custom (external) address for royalties. Contact us at hello@cent.co to initiate the transfer.