Cairo HTLC for Garden Finance

Introduction

This repository contains the Cairo smart contract implementation for the Garden Finance project. It enables Hashed Time-Locked Contract (HTLC) functionality on Starknet, facilitating secure cross-chain transactions.

Prerequisites

Ensure you have the following dependencies installed:

• Node.js (v16 or higher)
• Yarn (package manager)
• Starknet Devnet (for local testing)
• Hardhat (for Ethereum testing)
• Cairo - Cairo setup guide

Getting Started

Follow these steps to set up your development environment:

1. Install Dependencies

Run the following command to install required packages:

yarn install

2. Compile the Contract

Use Scarb to compile the Cairo smart contract:

scarb build

3. Start Development Networks

Run merry to start a Multichain local environment for testing:

merry go

4. Run Tests

Execute the test suite to ensure everything is working correctly:

yarn test

Deployment

Prerequisites

• Node.js and Yarn installed
• .env file with the following variables: DEPLOYER_PRIVATE_KEY=your_private_key DEPLOYER_ADDRESS=your_account_address

1. Install Dependencies

Run the following command to install required packages:

yarn install

2.Build the contract

scarb build

3.Deploy Contract

HTLC Contract

# Sepolia Testnet
yarn deploy:htlc sepolia "https://starknet-sepolia.public.blastapi.io" <token_address>

# Mainnet
yarn deploy:htlc mainnet "https://your-mainnet-rpc" <token_address>

# Local Devnet
yarn deploy:htlc devnet "http://127.0.0.1:5050" <token_address>

# Example
yarn deploy:htlc sepolia "https://starknet-sepolia.public.blastapi.io" 0x4718F5A0FC34CC1AF16A1CDEE98FFB20C31F5CD61D6AB07201858F4287C938D

Multicall Contract

# Sepolia Testnet
yarn deploy:multicall sepolia "https://starknet-sepolia.public.blastapi.io"

# Mainnet
yarn deploy:multicall mainnet "https://your-mainnet-rpc"

# Local Devnet
yarn deploy:multicall devnet "http://127.0.0.1:5050"

# Example
yarn deploy:multicall sepolia "https://starknet-sepolia.public.blastapi.io/rpc/0_8"

After successful deployment, a JSON file named .<contract_address>.json will be created in the project root directory containing all deployment details including contract address, transaction hash, and network information.