we believe that L3s have the power to open up new space for mainstream apps, unlocking trillions of transactions and driving major network effects for their settlement layer and stack. we also believe that Optimism’s Superchain vision will be achieved at the L3 level, with numerous, interoperable L3s settling onto the same L2 to bring about innovative and mainstream onchain experiences.

building on Base is already a cheat code. but constructing a truly Based L3?

that's godmode.

so what does it mean to make a Based L3? let’s break it down:

Based L3s utilize tech built on the Base stack and powered by Coinbase rails, with…
- onchain transactions that settle directly on Base
- native support for Coinbase Smart Accounts
- on and offramps that utilize Coinbase
- superchain bridge
- interoperability (more on this in our tech deep dive of B3, coming soon…)

Based L3s create value for the ecosystem by building for the next million users, by…
- creating a self-sustaining economic loop that keeps growing the user base, inspiring more builders, and catalyzing a unified, thriving L3 ecosystem - all settling to Base
- encouraging asset deployment on Base for maximum liquidity
- rewarding both the developers and the users for their efforts to create a positive loop
- establishing a dedicated builder fund to spark novel onchain experiences for the mass market

Based L3s have true cultural alignment with Base, through…
- being a bridge, not an island
- open-sourcing and decentralizing
- fostering creativity and innovation
- creating a community-driven approach to onboard the next million users

we built B3 in the spirit of an Optimism Superchain with the culture, values, and ethos of Base. that’s why we put together this playbook for others to join us. while B3 is focusing on gaming, we see massive opportunities for builders to join the Based L3 movement and launch ecosystems for fintech, art, music, creators, RWAs and beyond.

the cheat code is here. build with us, join the movement, launch your own Based L3.