https://windice.io/faq#f35Jackpot is accumulated every time jackpot is not won. When a player wins the jackpot, the accumulated amount is set to the base 0.25 BTC (or equivalent).
Jackpot won when the roll 7777 is hit, and the ID bet last symbol must be equal to 7, i.e. XXXXXX7.
Jackpot percentage is calculated by the following rule: (bet amount*100)/max_bet_amount
Only deposited funds plays count for Jackpot rolls
Minimum jackpot bet is 0.000005 BTC or equivalent to another currency.
Maximum jackpot bet is 0.05 BTC or equivalent to another currency.