> ## Documentation Index
> Fetch the complete documentation index at: https://injectivelabs-docs-ai-sdk.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.

# Peggy

## Abstract

The peggy module enables the Injective Chain to support a trustless, on-chain bidirectional ERC-20 token bridge to Ethereum. In this system,
holders of ERC-20 tokens on Ethereum can convert their ERC-20 tokens to Cosmos-native coins on
the Injective Chain and vice-versa.

This decentralized bridge is secured and operated by the validators of the Injective Chain.

## Contents

1. [Definitions](/developers-native/injective/peggy/01_definitions)
2. [Workflow](/developers-native/injective/peggy/02_workflow)
3. [State](/developers-native/injective/peggy/03_state)
4. [Messages](/developers-native/injective/peggy/04_messages)
5. [Slashing](/developers-native/injective/peggy/05_slashing)
6. [End-Block](/developers-native/injective/peggy/06_end_block)
7. [Events](/developers-native/injective/peggy/07_events)
8. [Parameters](/developers-native/injective/peggy/08_params)

### Components

1. **[Peggy](https://etherscan.io/address/0xF955C57f9EA9Dc8781965FEaE0b6A2acE2BAD6f3) smart contract on Ethereum**
2. **Peggy module on the Injective Chain**
3. **[Peggo](https://github.com/InjectiveLabs/peggo) (off-chain relayer aka orchestrator)**
   * **Oracle** (Observes events of Peggy contract and send claims to the Peggy module)
   * **EthSigner** (Signs Valset and Batch confirmations to the Peggy module)
   * **Batch Requester** (Sends batch token withdrawal requests to the Peggy module)
   * **Valset Relayer** (Submits Validator set updates to the Peggy contract)
   * **Batch Relayer** (Submits batches of token withdrawals to the Peggy contract)

In addition to running an `injectived` node to sign blocks, Injective Chain validators must also run the `peggo` orchestrator to relay data from the Peggy smart contract on Ethereum and the Peggy module on the Injective Chain.

### Peggo Functionalities

1. **Maintaining an up-to-date checkpoint of the Injective Chain validator set on Ethereum**
2. **Transferring ERC-20 tokens from Ethereum to the Injective Chain**
3. **Transferring pegged tokens from the Injective Chain to Ethereum**