Rattle is a service that allows you to hold lotteries such as giveaways and whitelist lotteries. Since Rattle's lottery is conducted on the blockchain, the lottery process is transparent and cannot be fraudulent or biased.

The campaign has a start and end date for accepting entries. Please proceed from the "Entry" button on the right pane of this page during that period.

We recommend using it on a PC (MetaMask). It can also be used on smartphones, but it may not work properly depending on your OS, wallet, and wallet connect settings.

Yes. A fee of $1 will be charged as a fee when entering each campaign. However, some campaigns allow you to enter for free. Even if the fee is free, you will be charged a gas fee (about $0.1).

Yes. Rattle manages the user's ID by "Sign in with Ethereum". In addition, entering a campaign requires a transaction to the lottery contract. We mainly cooperate with the user's wallet in these two points, but we have implemented it safely according to best practices.