1. currency: it mainly acts as the "exchange medium" of blockchain assets, and belongs to the universal equivalent, similar to the previous gold. Applications that fall into this category include Bitcoin and Litecoin.

2. Platform class: refers to the establishment of technical platforms to meet the development of various blockchain applications. At present, all major chain projects belong to this category, such as wave field TRON, EOS, Ethereum and so on.

3. Application category: refers to projects with exclusive applications in finance, games, logistics, property rights protection and other fields. It is also the fastest growing and may have great application prospects in various fields in the future. Specific projects include Ruibo and other projects.

4. Tokenization of assets: refers to the blockchain mapping of physical assets, that is, the entanglement of physical assets. Typical representatives are against the US dollar and Digix Dao against gold.