*3.1. System Design Overview*

EconLedger aims at a secure-by-design, trust-free and partially decentralized infrastructure for cross-devices networking IoVT systems at the edge. We consider a small scale video surveillance network with 100 nodes, and all IoVT devices and edge/fog servers are connected to the same regional power grid. Here, a node refers to a device owned by a user. Figure 1 is the system architecture of EconLedger.
