Saturn Strategic presale smart contract
A thoroughly tested smart contract used to conduct discounted presales with a lockup period.
Having a time lockup ensures two things:
- Investors will not participate in a presale with the sole purpose of dumping their tokens on the market, exploiting the early bonus advantage.
- Investors that do participate have an aligned vision and are comfortable supporting the project long term.
Test coverage report
Events
// called when presale is activated
event Activated(uint256 time);
// called when presale is stopped
event Finished(uint256 time);
// called when somebody makes a purchase. can use to show purchase history
event Purchase(address indexed purchaser, uint256 amount, uint256 purchasedAt, uint256 redeemAt);
Useful methods
presale = contract(abi); // load the contract interface in web3.js
// buy tokens
presale.buyTokens({value: purchase_amount_in_wei})
// emits purchase event, updates lockup and balance
presale.balanceOf(address) // check how much a person bought
presale.lockupOf(address) // check when they can withdraw. returns a UNIX timestamp
presale.redeem() // When lockup period ends, calling this function will transfer