According to Odaily, Optimism has announced that more than 280 projects have submitted applications for the fourth round of Retro Funding on the X platform. The deadline for applications was June 7th at 03:00 Beijing time. Previously, on May 23rd, Optimism had declared the opening of the fourth round of Retro Funding for public goods on the X platform. This funding round has allocated 10 million OP specifically for on-chain builders who deploy contracts and generate block space demand on Superchain.