Kleros is an online open source protocol which uses blockchain and crowdsourcing to fairly adjudicate dispute, their codes are publicly available.
Kleros provides fast, secure and affordable arbitration for anything and everything, it offers great judgements guided by smart contracts in a transparent and decentralized manner.
It uses game theoretic incentive for jurors to rule a case correctly
Kleros' Token is symbolized as PNK and it is used the utility token of the platform which uses ethereum network as it is ERC20 based.
Kleros is a wonderful project which is trusted by some many projects.