ソース:[1] MARA's Bitcoin Holdings Near $6 Billion Following Production Update (https://www.theblock.co/post/369621/mara-bitc ...)[2] MARA's bitcoin stack nears $6 billion following production update | The Block (https://vertexaisearch.cloud.google.com/groun ...)[3] What Is MARA Holdings' Role in Bitcoin Mining? - OneSafe Blog (https://vertexaisearch.cloud.google.com/groun ...)