Espresso Systems

Join the Ecosystem

Join the Ecosystem

Mainnet 0.0 Live

Fuel your chain
with Espresso

Cross-chain composability that makes all chains work together like one.

A

Open

A

B

Composable

B

C

Permissionless

C

Join the Ecosystem

Fuel your chain
with Espresso

Espresso is the protocol for coordinated block building: enabling & incentivizing chains to work together as one unified system.

A

Open

A

B

Composable

B

C

Permissionless

C

Product

A

Espresso Network

A confirmation layer built to support cross-chain composability.

Espresso confirmations lay the foundation for all chains to work together as one. An ecosystem in which any contract can call any other. Any user can access any application. Liquidity from one application can flow seamlessly to others. And contributions improve the platform as a whole, not a silo within it.

LIVE

Proof-of-stake in 2025

LIVE

Next release: proof-of-stake

Use the Espresso Network for:

Fast confirmations

Decentralized sequencing

Data availability

The Espresso Network is now live

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Confirmations

100

Nodes

0

Blocks

Start integrating

How Espresso Works

Fast Finality

Receive strong confirmations in seconds for all chains using Espresso.

Reliability

BFT consensus offers a strong guarantee. Upcoming relases will add economic security.

Composability

Espresso lays the foundation for cross-chain interactions that operate as if on one chain.

Easy integration

Native support for Arbitrum Nitro, OP Stack, Polygon CDK and more planned.

How to work with Espresso

Chains that integrate Espresso enable bridging protocols, solvers, applications, and users to benefit from fast, reliable confirmations. If you want support using Espresso Confirmations for what you are building, get in touch.

Running Espresso

If you have experience running node infrastructure or builder software, you can support Espresso and the future of cross-chain composability. Fill out this form and we will be in touch when we are ready for you to help run Espresso.

R&D

B

Espresso Research

Proposals for cross-chain composability powered by Espresso confirmations.

Shared sequencing

Low-cost data availability

High-performance consensus

Cross-chain builder markets

Faster, safer bridging

Synchronous composability

Coordinated Inter-Rollup Communication (CIRC)

In this work we introduce CIRC (Coordinated Inter-Rollup Communication), a simple yet powerful cross-chain messaging protocol that enables synchronous composability across L2s. CIRC offers several key advantages: no VM modifications; parallel proving; cryptographic enforcement; ability to support fast, reliable confirmations.

Defragmenting Liquidity with Async & Sync Composability

How L2 fragmentation can be addressed through faster bridging of native assets, fast message passing, or to a greater extent, through making chains synchronously composable. We offer an original protocol, CIRC, for both fast asynchronous and synchronous composability among L2 chains.

The Espresso Sequencing Market Design

A marketplace that enables rollups to sell sequencing rights to builders has several advantages, including that builders that buy timeslots for multiple rollups can guarantee atomic execution between these rollups. Atomic execution allows for satisfaction of cross-rollup user intents and strong confirmations for cross-rollup transactions.

Early Explorations of Shared Sequencing

Shared sequencing empowers rollup users to recover, in practice, the experience of being on one Ethereum chain, while retaining the sovereignty of individual rollups. Shared sequencing is especially powerful among zk-rollups when combined with proof aggregation as this allows for coordinated construction of rollup blocks, supporting synchronous composability.

News & Brews

Composable: Are TEEs Even Real?

LogX Joins Espresso: Fast, Secure Confirmations Fuel the Future of DeFi

Crosschain Pioneers: Announcing Winners of the Build & Brew Hackathon

Fixing Cross-Chain Interop: From Confirmations to Composability with CIRC

Explore all Updates