Vyper 🐍

The contract here is a sublinear staking contract: if you are in the whitelist (specified as an ERC1155 collection), then you can stake N coins, and get a return of N ** 0.75 coins per slot, for as long as the contract has coins to pay for it. There is a fundedUntil mechanism that ensures that if the contract runs out of money, every staker gets rewarded for every slot up to the fundedUntil timestamp, and the mechanism doesn't turn into a fractional reserve.

https://github.com/ethereum/research/blob/master/sublinear_staking/code.vy

Bounty of total 2 ETH for identifying any bugs / vulnerabilities in the contract and proposing specific fixes, if multiple issues are found the bounty will be split based on severity.

Amount: 2 ETH

@bountybot

Yay @vitalik.eth posted a bounty on Bountycaster! 🎉

Co-founder @bountycaster (bountycaster.xyz). Previously: co-founder of Scalar Capital, product at Coinbase, co-producer @ethereumfilm