Today, we share a live public demo of the first based L3 appchain. 

This is a landmark moment for Spire as we demonstrate the future of Ethereum rollups: synchronous composability.

Spire is building the Based Stack. spire.dev

The demo shows a based L3 appchain synchronously reading data from its L2.

This may seem simple, but the implications are significant.

It previews an onchain world of millions of appchains operating in sync and secured by a single unifying network: Ethereum.

Compared to traditional L3s / appchains, Spire unlocks:

✅ synchronous composability
✅ lightweight deployment
✅ customizability

Developers can achieve the scalability and customization of their own appchain while accessing the liquidity and users of the underlying L2 — with the simplicity of deploying a smart contract on L2.

We are proud to share this small but significant step in the path towards a unified Ethereum.

Stay tuned over the coming months as we release examples of higher levels of synchronous composability and the first production based L3 appchain.

For more in depth information about this demo, visit the Spire blog.

For more in depth information about this demo, visit the Spire blog.

https://paragraph.com/@spire/a-live-demo-of-synchronous-composability

Launching an appchain is often prohibitively expensive.

With Spire, however, builders can easily deploy their own L3, inheriting the composability of its underlying L2 and toolings of the Ethereum ecosystem.

This means no expensive oracles, custom explorers or bespoke infrastructure. Just out-the-box deployment saving millions of dollars.