[Guiyang Public Security Bureau Wudan Branch intends to purchase patent technology services for combating virtual currency crimes] According to Golden Finance, Guiyang Public Security Bureau Wudan Branch recently announced a patent technology service bidding project involving combating virtual currency crimes, but the project has been terminated because the supplier's commitment letter was not stamped with the official seal. The project mainly analyzes a large amount of data on public chains such as Ethereum and Tron to depict criminal behavior and criminal portraits. The project content includes secure blockchain data collection, block data field splitting, valid wallet address acquisition, capital flow positioning, capital retention positioning, transaction relationship positioning, etc. At the same time, it requires a large amount of data label analysis capabilities, overseas exchange address recognition capabilities, overseas exchange certificate adjustment services, etc. The project budget is 9.5 million RMB.