Ticketh

Rules:
– Every player can buy more than one ticket. (buy more tickets if you are not the only player)
– Every player can participate in more than one lottery.
– Lottery starts when first ticket is bought for the round.
– The lottery duration is current block number when starting + duration blocks.
– Once the current block number reaches the lottery block number only one more ticket can be submitted.
– When the last ticket is submitted the lottery ends and a winner is selected.
– Winner is determined by a random number and prize is received within seconds.
– Prize is calculated when there is more than one participant. 10% tax is for the lottery owner.
– Displayed prize includes the last entry.

Randomness:
Unpredictable randomness is achieved by using the Chainlink decentralized oracles.