Polkadot, a cross-chain project, has opened a webpage on its website to collect information on supporters who are interested in participating in the latest round of Polkadot token sale. The registration information shows that residents of the United States, Japan, Taiwan and other places may not be able to participate in the latest round of public offerings. According to public information, the cost of Polkadot’s first crowdfunding in 2017 was about US$35 per DOT. Later, in 2019, it conducted a second round of financing and sold 500,000 DOTs by private placement. At that time, the cost of each DOT was announced. About $120.