Odaily News Optimism announced the details of the fourth round of Retro Funding on the X platform. Optimism Collective will allocate 10M OP to reward super chain builders. Some key time points are selected: 1. Registration starts: May 23; 2. Registration ends: June 6; 3. Application review process: June 6-June 18; 4. Voting: June 23-July 8; 5. Results and grant delivery: July 15.