ソース:[1] 21X Announces Entry into US Market, Plans to Launch Regulated Blockchain Exchange - TechFlow (https://www.techflowpost.com/newsletter/detai ...)[2] 21X To Establish U.S. Operations, Bringing World's First Blockchain-Enabled Exchange to the American Market - Fintech Finance (https://vertexaisearch.cloud.google.com/groun ...)[3] 21X Expands To The U.S. With Plans For Regulated Blockchain-Based Exchange (https://vertexaisearch.cloud.google.com/groun ...)