> ## Documentation Index
> Fetch the complete documentation index at: https://docs.odinx.org/llms.txt
> Use this file to discover all available pages before exploring further.
# Introduction
> A Trustless Cross-Chain Settlement Mechanism
# OdinTrade: Trustless Cross-Chain Settlement Mechanism
## Overview
OdinTrade is a decentralized, trustless cross-chain settlement protocol that enables atomic swaps between Bitcoin and EVM-compatible blockchains, starting with Ethereum. It leverages an extended Hashed Time-Locked Contract (HTLC) method to facilitate secure, efficient, and user-friendly asset exchanges without requiring intermediaries.
## How It Works
### 1. Swap Initialization
1. **User Requests Swap**: A user requests a price quote from the Liquidity Node.
2. **Liquidity Node Generates Secret**: The node generates a cryptographically secure random secret (`SECRET_X`) and its hash (`HASH(SECRET_X)`).
3. **Pre-Signed Claim**: The user receives a pre-signed claim transaction (`UserClaimToSign`), ensuring smooth execution.
### 2. HTLC Deployment
* **Liquidity Node Locks Funds**: The node creates an HTLC on `ChainOut` with `HASH(SECRET_X)`, `AmountOut`, and `LOCKTIME_1`.
* **User Locks Funds**: The user creates an HTLC on `ChainIn` with matching parameters, ensuring atomicity.
### 3. Claim Process
* **Liquidity Node Claims on `ChainIn`**: The node submits `SECRET_X` to claim `TOKEN_IN` from the Bitcoin contract.
* **User Claims on `ChainOut`**: Once `SECRET_X` is revealed, user claim will be managed by the Liquidity Node thanks to the pre-signed claim transaction of the User. The User in any case can claim the funds on `ChainOut` since the `Secret` is stored on the `ChainIn HTLC`.
* **Automatic Fallback**: If unclaimed, assets revert to their original owners after the locktime expires.
## Key Features
* **Trustless Atomic Swaps**: No reliance on third-party intermediaries.
* **Pre-Signed Transactions**: Reduces user interactions while maintaining security.
* **Secure Locktime Mechanism**: Ensures atomic execution and prevents fund loss.
* **Cross-Chain Compatibility**: Supports Bitcoin (UTXO) and Ethereum (Account-based).
* **Efficient Liquidity Access**: Sourced from Centralized Exchanges (CEXs) to provide competitive pricing.
* **Seamless Integration**: SDKs and APIs for wallets, DEXs, and DeFi applications.
