> ## Documentation Index
> Fetch the complete documentation index at: https://docs.initia.xyz/llms.txt
> Use this file to discover all available pages before exploring further.

# OPinit Bridge

## Overview

The OPinit Bridge is an implementation of the optimistic rollup bridge,
implemented as two Cosmos SDK modules; the **OPchild Module** and the **OPhost
Module**.

## OPhost Module

The OPhost Module is integrated into the Initia L1 chain. This module is
responsible for:

* **Bridge Management:** Creating, updating, and managing bridges between Initia
  L1 and rollups.
* **Output Proposal Handling:** Managing and finalizing L2 output proposals.

## OPchild Module

The OPchild Module acts as a counter-party to the OPhost Module and is
integrated into all Interwoven Rollup implementations. This module is
responsible for:

* **Operator Management:** Adding, removing, and managing operators for a given
  rollup.
* **Bridge Message Execution:** Processing messages received from the Initia L1.
* **Oracle Updates:** Managing oracle price feed updates relayed by the OPinit
  Executor.

The
[OPinit Bot Executor](/home/core-concepts/interwoven-stack/opinit-framework/components/executor)
normally handles actions related to both of these modules.