OpenSea and Rarible are marketplaces that aggregate all NFTs created on the Ethereum blockchain.
When you mint an NFT on Foundation, it is automatically displayed on OpenSea and Rarible
On OpenSea and Rarible collectors can make open offers on only your minted NFTs, as a creator or a collector. You can choose to accept an offer on OpenSea or Rarible, but note that you should only accept an OpenSea or Rarible offer if you no longer want the NFT to display on Foundation
NFTs minted on Foundation receive a 10% royalty in perpetuity, anytime a piece is resold. The royalty will be sent directly to the wallet that minted the NFT.
Foundation has an agreement with OpenSea and Rarible that all secondary market sales will receive the 10% royalty if the work is resold on OpenSea and Rarible.
OpenSea and Rarible run a payout every 1-2 weeks