I was trying to create a mining investment program for users where users would be able to invest their bitcoins with us and we would use it to purchase bitcoin miners and generate profits. The way that I had designed this was that it would carry absolutely no risk to the user (other than us running away with their money, which is always a risk with any investment) and users would be guaranteed a fixed return on their investment (around 8-10% APR) measured in bitcoins, regardless of the BTC price. It would eliminate most issues with "cloud-mining" schemes and users would not have to worry about the difficulty and price, we would assume all of that risk. We would also provide proof of our mining hashrate to show that we were not running a fractional mining scheme.
That's a bummer. It would be a great addition. But how could you possibly guarantee a fixed 8%-10% return? You would expose yourself to a high risk, as you cannot possibly know what the difficulty will be like in the future and whether your hardware will still be efficient etc.
Who are those lucky 2?
The first one?
Ignoring misspelling, that's a bit general answer, could cover anything from selling mining hardware to cpu altcoin mining software (or even mining pool etc). Would you count this?
Other guy was more accurate:
But he broke the rules by making 3 guesses within 24h frame.
I believe I was next:
I don't think it's very likely, but the only thing I can come up with (since it's not leaderboard or loyalty points or shares in profit) is cloudmining (Bitcoin, or altcoins), in which users earn (dilutive?) shares for every roll/referral roll/dice wager.
Did I win?
Sorry, I cannot reveal the exact method that we were planning to use to guarantee returns as it is a pretty big competitive advantage that we have which others don't and we may yet implement this in the future.
The winners are Bigmann23 and pawel7777! Please pm me your freebitco.in user ids for the prize.