What's in the book value of a bitcoin ASIC miner?

When diving deep into the financial disclosures of publicly-traded bitcoin mining companies, one might find themselves amazed by the vast differences in accounting standards. The business model seems simple enough: buy equipment, mine bitcoin, pay expenses, profit?

What people may not know about mining companies, however, is that one would be hard-pressed to find a consistent accounting metric across the board. Given how nascent the industry is, companies have yet to find a solid footing on the creation of uniform standards.