Ethereum co-founder Vitalik Buterin released a "Sublinear Staking Contract Bug Bounty Program" on Bountycaster, with a total bonus of 2 ETH for identifying any bugs/bugs in the contract and proposing specific fixes. If multiple problems are found, the bonus will be distributed according to severity.
The specific requirements are: In the sublinear staking contract it released, if the user is in the whitelist (specified as an ERC1155 collection), then N coins can be staked, and each slot will receive a return of N*0.75 coins, as long as the contract has tokens to pay it. This is a fundedUntil mechanism that ensures that if the contract runs out of money, each staker will receive a reward for each period before the fundedUntil timestamp, and the mechanism will not become a partial reserve.