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      • Internal Functionality
        • Espresso Node
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          • How the Stake Table Contract Works
        • Smart Contract Upgradeability
    • Rollup Stacks
      • Integrating a ZK Rollup
        • ZK Rollup Architecture
        • Using Espresso
        • Summary of Changes
      • Integrating an Optimistic Rollup
        • Optimistic Rollup Architecture
        • Using Espresso
        • Summary of Changes
  • Guides
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      • Integrating Arbitrum Orbit Chain
        • Quickstart with Arbitrum Nitro Rollups
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          • Using TEE with Nitro
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          • Arbitrum Testnet
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  • API Reference
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        • v0
          • Status API
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          • State API
          • Events API
          • Submit API
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      • Running a Mainnet 1 Node
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      • Decaf Testnet Release
        • Running a Node
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      • Cappuccino Testnet Release
        • Running a Node
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        • Benchmarks
      • Gibraltar Testnet Release
        • Interacting with Gibraltar
        • Arbitrum Nitro integration
        • Deploying a Rollup on Gibraltar
      • Cortado Testnet Release
        • Interacting with Cortado
        • OP Stack Integration
          • Optimism Leader Election RFP
      • Doppio Testnet Release
        • Interacting with Doppio
        • Polygon zkEVM Stack Integration
        • Minimal Rollup Example
        • Benchmarks
      • Americano Testnet Release
  • Appendix
    • Interacting with L1
      • Trustless Sync
      • Fork Recovery
      • Bridging
    • Glossary of Key Terms
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Cortado Testnet Release

Espresso testnet 3 (Cortado)—September 2023

PreviousDeploying a Rollup on GibraltarNextInteracting with Cortado

Last updated 11 months ago

With the release of (testnet 4), the Cortado testnet is currently paused.

In September 2023, we announced the Cortado release of Espresso.

The primary highlight of the Cortado release is the integration of a second rollup stack with Espresso: the . This integration is a direct result of the work that Espresso completed in , for which Espresso was awarded an Optimism RFP in July 2023. Details on the OP Stack integration can be found .

We've deployed a public Cortado testnet, integrated with two rollups of different stacks: an OP Stack rollup (called Vienna, deployed in collaboration with ) and a Polygon zkEVM rollup. Instructions for interacting with this testnet can be found .

Gibraltar
OP Stack
developing a leader election interface for the OP Stack
here
Caldera
here