According to news on November 22, Ethereum co-founder Vitalik Buterin launched the Sublinear Staking Contract bug bounty program on the Bountycaster platform, with a total reward of 2 ETH. The program is designed to identify potential vulnerabilities in contracts and solicit specific fixes, with bounties for multiple issues distributed based on severity. This sub-linear staking contract allows whitelisted users (specified through the ERC1155 set) to stake N tokens and receive a token reward of N raised to the power of 0.75 per slot. The contract has a fundedUntil mechanism to ensure that when funds are exhausted, pledgers can obtain all rewards up to the fundedUntil timestamp to avoid a partial reserve state.