A challenge agent for Optimism written in pure Rust.

Related tags

Cryptography op-challenger
Overview

op-challenger • ci license

Note
Work in progress.

A set-and-forget challenge agent for the OP Stack written in pure Rust 🦀

Usage

op-challenger [OPTIONS] \
  --l1-ws-endpoint <L1_WS_ENDPOINT> \
  --trusted-op-node-endpoint <TRUSTED_OP_NODE_ENDPOINT> \
  --signer-key <SIGNER_KEY> \
  --dispute-game-factory <DISPUTE_GAME_FACTORY> \
  --l2-output-oracle <L2_OUTPUT_ORACLE>

Options:
  -v, --v...
          Verbosity level (0-4) [env: VERBOSITY=]
      --l1-ws-endpoint <L1_WS_ENDPOINT>
          The Websocket RPC endpoint used to index and send transactions. [env: OP_CHALLENGER_L1_WS=]
      --trusted-op-node-endpoint <TRUSTED_OP_NODE_ENDPOINT>
          The HTTP RPC endpoint used to compare proposed outputs against. [env: OP_CHALLENGER_TRUSTED_OP_NODE_RPC=]
      --signer-key <SIGNER_KEY>
          The private key used for signing transactions. [env: OP_CHALLENGER_KEY=]
      --dispute-game-factory <DISPUTE_GAME_FACTORY>
          The address of the dispute game factory contract. [env: OP_CHALLENGER_DGF=]
      --l2-output-oracle <L2_OUTPUT_ORACLE>
          The address of the L2OutputOracle contract. [env: OP_CHALLENGER_L2OO=]
  -h, --help
          Print help
  -V, --version
          Print version

Contributing

See CONTRIBUTING.md

License

MIT, forever and always.

Credits

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Comments
  • feat: Reverse sync

    feat: Reverse sync

    Overview

    At the moment, we only listen for output proposals / new disputes as they come in. Any ongoing disputes that were created before the op-challenger is started will not be picked up.

    We should add in a reverse sync mechanism on top of #1 that enables the op-challenger to react to ongoing disputes that are within the range of [now - finalization_period, now).

    driver 
    opened by clabby 0
  • feat: Local database for ongoing disputes

    feat: Local database for ongoing disputes

    Overview

    For the agent to keep track of ongoing disputes on restart, we should persist a local in-memory database of ongoing dispute games that may be watched by a Driver. See #3 as well.

    At the moment, the OutputAttestation game only requires one response, but future games (Fault) will require multiple responses. There should also be a new Driver that watches ongoing disputes, reacts when necessary, and prunes them when they are completed.

    driver 
    opened by clabby 0
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