A second bit of DD tells us there are 56 wallets with more than 13,000 BTC in the world. Unlikely Stepsys gets in the same bathroom as any of those people much less a boardroom. Maybe though Stepsys will tell anyone dumb enough to still invest with him which wallet belongs to Woo Trader.

Top 100 Richest Bitcoin Addresses and Bitcoin distribution

With a wallet, a Ponzi scheme more or less would be simple enough to detect. A large number of small deposits and a similar number of paybacks representing a faction of the initial deposit. Say 1% per day or whatever. Then a few large withdrawals to wallets that made no proportional deposits. If the perp was really stupid he/she would suck it all to one address, but who could be that stupid?

The BTC balance will decline over time toward 0 since no real trading or whatever F-All Tale is occurring.