Bitcoin miners Marathon Digital and Riot Platforms have just signalled their highest monthly Bitcoin production since the Bitcoin halving in April — signaling a strong rebound since miner rewards were halved. Marathon produced 717 Bitcoin (BTC) — worth $48.8 million — in October, which the company partly attributed to its energized hashrate rising over 14% to surpass 40 exahashes per second, Marathon’s CEO Fred Thiel explained in a Nov. 4 statement. Higher transaction fees in October also boosted Marathon’s overall Bitcoin output, which accounted for around 5% of the total Bitcoin production, …