A publicly traded United States-based company Riot Blockchain files a request with the US Securities and Exchanges Commission (SEC) to launch ...
source https://www.google.com/url?rct=j&sa=t&url=https://kryptomoney.com/riot-blockchain-files-for-regulated-cryptocurrency-exchange-in-the-us-sec/&ct=ga&cd=CAIyGmM2Nzk3ODA2ZWViNjVjODI6Y29tOmVuOlVT&usg=AFQjCNG2BSdF5kniOCDxTTYuo1cIIjCjHQ
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