# A Based Announcement Today By [420000.lens(๐ŸŒธ, ๐ŸŒฟ)](https://paragraph.com/@33651) ยท 2023-02-25 --- we welcome a new entrant to the Optimism ecosystem: Coinbase. Coinbase joins as both a core developer of the OP Stack codebase, and as a new L2 blockchain built on it, called Base. ![](https://storage.googleapis.com/papyrus_images/8ed999d7171fbb21348c8f6caa655ec58ad663186f7bebe23f8b5361f6b75340.png) --- *Originally published on [420000.lens(๐ŸŒธ, ๐ŸŒฟ)](https://paragraph.com/@33651/a-based-announcement-today)*