https://docs.google.com/forms/d/1aJjefep3kA2aaYMNSkHdOr4c3F3E6CB0Mmki12bJuHo/viewform
How will it work(you may modify and make it better)
- You visit the address to make sure the balance is less than 3BTC(considering 3000 draws are to be made) so that you don't place any bets after that.
- You send the defined amount(0.001BTC) to the address, then you fill out the form.
- Any user exceeding the limit is refunded(3001st, 3002nd,... pay).
- Randomly select a number
- Send the prize to the winner
- Make the sheet public.
It would be much better if you put the number of tickets the user wants, the bitcoin address and a confirmation service to ensure it has sent, otherwise, people may get confused!
HASHNEST also don't have a licence for gambling (as they are a trade platform).
The number should be selected from blocks on blockchain, or last entrant, or even subtracting their time in seconds of the last block-the last bet (seconds) giving you a number that can be ued.