Spatio-temporal data is two-dimensional data with time and space. In the past, centralized databases were used to store spatio-temporal data, but this way is weak to resist malicious attacks. As a distributed storage technology developed in recent years, which has the characteristics of decentralization, non-tampering, openness and transparency, security and credibility. The security of the blockchain is jointly maintained by participants, which makes the data stored in it more secure. This article aims to summarize the currently developing blockchain technologies, like blockchain 1.0, 2.0, and DAG blockchain known as blockchain 3.0, and analyze the advantages and limitations of using them to store spatio-temporal data.
Keywords blockchain technology, spatio-temporal data, DAG, energy