(NASDAQ: MARA ) ('Marathon' or 'Company'), one of the largest enterprise Bitcoin self-mining companies in North America, today announced that DMG Blockchain, (TSX-V: DMGI) (OTCQB: DMGGF) (FRANKFURT: 6AX), a vertically integrated blockchain and cryptocurrency technology company, will become the first North American Bitcoin miner, excluding Marathon, to join Marathon’s mining pool, MaraPool. 09, 2021 (GLOBE NEWSWIRE) - Marathon Digital Holdings, Inc.