Well I have only accepted 50 customers. Not taking any new ones for now. A Ponzi scheme needs new customers to pay for old. A ponzi scheme also offers astronomical rate of returns, and needs aggressive selling. A ponzi scheme also usually creates a pyramid or binary strucrure.
I have an upper limit on investment per customer. I have an upper limit on number of customers. And I have an absolute flat and linear structure. No sales agent. Only when enough profits accumulate to guarantee minimum returns that I am going to reopen for new customers. I can totally freeze this whole thing today, and will have no issues in servicing the existing investors without a hitch if BitCoin prices generate 13 percent per annum or more in next 3 years. Thats roughly 450 USD price gain in 3 years. Not a tall order in my opinion. Even if BitCoin prices are not above 1500 USD after 3 years, I can still honor my contracts by my personal capital for current customers.
So Sir, by no stretch of imagination is it a Ponzi scheme.