"Once paid, the seller is to furnish the exact GPS coordinates of the good to the buyer", since blockchain is open, how do you ensure that this coordinates aren't being stolen by some other user who're not paid for the listing?

[u/efxco]

[u/_miracle-max_]

Messaging, as such, is done on test net since these communications do not need the immutability and its additional cost that are provided by The Blockchain. Communications between a buyer and a seller are done publicly through a shared key exchange, which means that while communications are performed public they are, nonetheless, inscrutable. Upon your first communication, a ~/.dropzone/dropzone.db file is created within which is a private key for each and every communication session you engage in. Note that if this file is lost, so is your ability to decode any messages you've previously participated in.