  The communication between ground and satellites is tough due to long
distances and interferences in the propagation medium. Using the blockchain
technology and a series of ground nodes, information can be distributed in a
secure and reliable way. The satellite discovers nearby ground stations and
sends the information that it is verified with other nodes present in the same
network. Ground nodes are classified into two types, master (Watchtowers) and
working (Mystics) nodes. The Watchtower controls the entering gate of new nodes
to the network and the distribution of information between the working nodes.
