One necessary cookie for HTTPS. And two unnecessary cookies courtesy of google analytics. Also if you visit the map there is one [the hidden form nonce] for the transaction chain & if you buy one we save the data, encrypted, on our side, for the global map. Also if you add an icon using the key🔑/✏️pencil feature you are technically creating a cookie for yourself that is local, temporary, private, but also unencrypted/openSource for your safety.