Every exchange as minimum requirements to be listed.
Just for example, NASDAQ: 1,250,000 publicly-traded shares upon listing, excluding those held by officers, directors or any beneficial owners of more then 10% of the company, while minimum bid must be $4 USD and needs at least 3 market makers.
Then there are requirements for pre tax earnings, cash flow, time in operation etc. There are no Co's in BTC world, that come even close to those
OTC aka "pink sheet" stocks (so called unlisted securities) have way lower requirements but still, none of the BTC operations qualify.
Look up Rule 3a51-1 aka Definition of "Penny Stock" (1934 act)
Accounting will be no big deal. BTC can be handled as any foreign currency and rules for that are clear.
If you conduct 0 business in BTC, it will be even easier - BTC becomes an investment and a part of your Co's assets on the balance sheet.
.... day when BTC becomes fully regulated and every exchange operator get fist-f'ed by their local government, BTC has lost the war for financial freedom (at least on some levels).