One critical step in deploying blockchain in wireless communication networks is to understand the relationship between communications and blockchain, as well as the performance constraints posing on their counterparts. As such, in this chapter, we aim at establishing an analytical model for blockchain‐enabled wireless IoT systems by modeling their spatial and temporal characteristics as Poisson point processes (PPP). We then derive the distribution of signal‐to‐interference‐plus‐noise ratio (SINR), blockchain transaction successful rate, as well as its overall throughput. Based on this performance analysis, we design an algorithm to determine the optimal full function node deployment for blockchain systems under the criterion of maximizing transaction throughput. In addition, the security performance of the proposed system is analyzed considering three different types of malicious attacks. Numerical results validate the accuracy of our theoretical analysis and optimal node deployment algorithm.