Payouts:
Payouts are completed daily.
Daily devidents for 1 unit are calculated on (total earning - maintenance fee) from product divided by number of total units.
Maintenance fee is converted to BTC on payout calculation based on the current exchange rate from crypto.bg
Contracts:
There is no contract expiration. You will receive daily devidents until profit from mining is greeter than zero. If a cloud product dividend reaches zero for more than 7 days, product is terminated.
Many factors come into play such as bitcoin price, network difficulty, etc.
Abo