As with buying NFTs, you can also sell them using Offers. Simply create an Offer in your Electron wallet, then send it wherever you want, including to our community galleries and marketplaces such as MintGarden, Dexie, SkyNFT, and SpaceScan. If an Offer file is modified, then that copy is no longer valid. This means that you can share your Offers with confidence -- the only thing a "thief" can do with your Offer is accept it.