Optimism has announced the launch of Retro Funding 5: OP Stack registration is now officially open. This initiative aims to recognize key contributors in the Ethereum ecosystem. Approximately 8 million OP tokens will be distributed among three categories of contributors: first, developers who have contributed to Ethereum core development; second, contributors involved in the research and development of the OP Stack; and third, contributors who have contributed code or resources to the OP Stack tools. The token distribution plan reflects Optimism's support and commitment to promoting diversity and prosperity within the Ethereum ecosystem.