Today i finally did read the whole Tombola White Paper today.. i would recommend you towards doing the same.. it is not so much, just 30 pages and lot of them are covered with drawings. As i expected, this is a competent document, which includes all details you need to know before taking the smart decision of contributing!
You should have read the first whitepaper...
It used to say:
B-3. Problems of the existing blockchain lottery services
As for the conventional blockchain lottery services, they use bit coin and ethereum for their services. First of all, as for companies that use Bitcoin for their services, they manage the collected amount centrally through their own server that controls the amount of money due to the disadvantage of Bitcoin without smart contract function and distribute the prize money. This implies that they can manipulate the results at any time, or they can flee at night with the huge prize money.
As for Ethereum lottery services, you must pay an Ethereum gas fee. Ethereum has an Ethereum Gas (Gwei) that you have to pay to run smart contract codes in your structure. In the order of the higher amount to be paid for this gas, the miners have a system where they establish deals and must pay accordingly a kind of fee in addition to the Ethereum they must actually use. Although the lottery ticket amount includes fees, the user has to pay fees again. Currently Ethereum has a processing speed that can handle 100 transactions every 15 seconds. While Visa, a global credit card company, handles up to 25,000 transactions per second and China’s Alipay handles up to 50,000 transactions per second, Ethereum has a far slower speed. If a user receives a large amount of money as a jackpot, no one knows how long it will take to receive the prize money.
And:
D. Tombola with EOS DAWN. 3.0
Tombola plans to build coins and serve platforms based on EOS to solve the problems of existing block chain lottery and game services. Based on EOS blockchain Smart Contractor system, when the terms of the contract are met, it is designed to automatically send the amount of money at the correct time to the appropriate location. EOS has the advantage of being able to handle millions of projects per second and not having to pay for the Gas Fee the user has to use most often. Thus, users can eliminate the burden of double payment of fees and receive rewards quickly.
But they changed it to Ethereum with no notice remember and don't want to tell anyone interested in the project why the did that or how Ethereum now works for the project.