According to ChainCatcher, Optimism reminded on social platforms that in order to ensure that the fourth round of public goods traceability funding is not rejected, each application must meet the eligibility criteria of the relevant round. For on-chain builders, eligible chains, contract indicators and KYC requirements must be followed. At the same time, applications that promise future impacts, false statements, impersonation, bribery, spam or duplication will be rejected. Applicants should submit their applications on time, ensure that the Github code base is verified and has a license, and provide all details of the deployed contract when registering.