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  • INTRODUCTION
  • LEARN
    • Espresso in the Modular Stack
    • The Espresso Network
      • System Overview
      • Properties of HotShot
        • EspressoDA
          • How It Works
      • Interfaces
        • Espresso ↔ Rollup
        • Espresso ↔ L1
        • Rollup ↔ L1
      • Internal Functionality
        • Espresso Node
        • Light Client Contract
        • Fee Token Contract
        • Stake Table
          • 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
    • Using the Espresso Network
      • Integrating Arbitrum Orbit Chain
        • Quickstart with Arbitrum Nitro Rollups
        • Reading Confirmations from the Espresso Network
        • Arbitrum Nitro Integration Overview
          • Using TEE with Nitro
          • Arbitrum Nitro Trust & Liveness Dependencies
        • Migrating Arbitrum Orbit Chains to Espresso
          • Arbitrum Testnet
            • Nitro Testnet
            • Local Deployment (`docker compose`)
      • Using the Espresso Network as a Cartesi application
    • Running an Espresso Node
    • Running a Builder
    • Bridging with the Espresso Network
  • API Reference
    • Espresso API
      • Status API
      • Catchup API
      • Availability API
      • Node API
      • State API
      • Events API
      • Submit API
    • Builder API
  • Releases
    • Mainnet 0
      • Running a Mainnet 0 Node
      • Contracts
    • Testnets
      • Decaf Testnet Release
        • Running a Node
        • Contracts
      • Cappuccino Testnet Release
        • Running a Node
        • Deploying a Rollup on Cappuccino
        • 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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  1. Releases
  2. Testnets
  3. Cortado Testnet Release
  4. OP Stack Integration

Optimism Leader Election RFP

The OP-Espresso integration is a result of our work on Optimism's request for proposals of a leader election proof-of-concept against the OP Stack.

On 1 June 2023, Optimism solicited proposals for this RFP, with submitted proposals due June 28. Espresso Systems' proposal to the RFP divided the project into several tasks:

  • T1: contract interface

  • T2: basic PoC contract

  • T3: batch submission updates

  • T4: derivation pipeline updates

  • T5: basic testing

Several non-required extras were added as stretch tasks T6-T10:

  • T6: batch inbox address in system config

  • T7: specification of a fee address set by sequencer

  • T8: hardfork flag

  • T9: alternative contract implementing interface

  • T10: documentation

Espresso's proposal was selected, and with the Cortado release, we have completed, or are about to complete, the specified tasks for the minimum viable fulfillment of the RFP. Further details and updates can be found in the same GitHub issue.

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Last updated 10 months ago