Multichain Anonymous Transactions Platform

This project is an innovative multichain platform enabling seamless and anonymous transactions between NEAR and ZCash networks. By integrating Near Intents and a powerful AI agent, users can conduct secure and private transactions across multiple blockchains.

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Features

AI Agent

• Deposit NEAR or USDT into Near Intents.
• Check the balance of these assets within Near Intents.
• Use Mixer transactions for 100% anonymous transfers on the NEAR network, allowing deposits and withdrawals without traceable links.

Deposit

• Supports deposits of NEAR and USDT into Near Intents.
• Allows ZCash deposits through Near Intents.

Swap

• Enables seamless asset swaps between NEAR, USDT, and ZCash.

Withdraw

• Withdraw NEAR and USDT within the NEAR network.
• Withdraw ZCash on its native network.

With this platform, users can interact with a NEAR wallet to perform all transactions and send withdrawal requests to the ZCash network, making it a fully multichain platform with anonymous transaction capabilities via the AI-powered Mixer.

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NEAR Intents ZCash Agent

This project includes an API for interacting with NEAR Intents and ZCash, allowing users to deposit, check balances, and execute transactions.

API Features

• Deposit NEAR and USDT into Intents contracts.
• Query balances of these assets in Intents.
• Utilize Mixer functionality for anonymous NEAR transactions.

Available API Endpoints

1. Deposit NEAR to Intents Contract

/api/tools/deposit_intents_near

• Allows depositing NEAR into Intents.
• Parameters:
  • accountId (NEAR account ID, required).
  • near_amount (Amount in yoctos, required).

2. Deposit USDT to Intents Contract

/api/tools/deposit_intents_usdt

• Allows depositing USDT into Intents.
• Parameters:
  • accountId (NEAR account ID, required).
  • usdt_amount (Amount of USDT, required).

3. Get Balance of USDT in Intents

/api/tools/balance_intents_usdt

• Queries USDT balance in Intents.
• Parameter:
  • account_id (NEAR account ID, required).

4. Get Balance of NEAR in Intents

/api/tools/balance_intents_near

• Queries NEAR balance in Intents.
• Parameter:
  • account_id (NEAR account ID, required).

5. Withdraw NEAR from Intents Contract (Under Development)

/api/tools/withdraw_intents_near

• Allows withdrawing NEAR from Intents.

6. Deposit NEAR to Mixer Contract

/api/tools/deposit_mixer_near

• Deposits NEAR into Mixer for anonymous transactions.
• Parameters:
  • secret (Secret to create a commitment hash, required).
  • near_amount (Amount in yoctos, required).

7. Withdraw NEAR from Mixer Contract

/api/tools/withdraw_mixer_near

• Withdraws NEAR from Mixer.
• Parameters:
  • secret (Secret for commitment hash, required).
  • recipient (NEAR recipient, required).

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NEAR Mixer Smart Contract

The near-mixer contract provides privacy-preserving transactions by breaking the on-chain link between deposit and withdrawal addresses.

Contract Features

• Supports private token transfers.
• Handles denominations of 1, 10, and 100 NEAR.
• Implements a non-custodial design.
• Uses secret-based withdrawal.
• Includes a configurable fee system (max 5%).
• Enforces a 24-hour delay for improved anonymity.

Quick Start

Install dependencies:

# Install Rust and NEAR CLI
curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh
rustup target add wasm32-unknown-unknown
npm install -g near-cli

Clone and deploy:

git clone https://github.com/yourusername/near-mixer.git
cd near-mixer

Use the Mixer CLI for deposits and withdrawals:

chmod +x scripts/mixer.sh
./scripts/mixer.sh init your-account.testnet mixer.testnet testnet
./scripts/mixer.sh deploy
./scripts/mixer.sh deposit 1
./scripts/mixer.sh withdraw recipient.testnet
./scripts/mixer.sh stats

Privacy Considerations

• Wait at least 24 hours before withdrawing for better anonymity.
• Use common denominations (e.g., 1 NEAR) to blend with other transactions.
• Avoid patterns that make transactions traceable.

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Frontend - Next.js Application

The frontend is a Next.js-based decentralized interface allowing users to interact with the platform.

Setup Instructions

Run the development server:

npm run dev
# or
yarn dev

Access the app at http://localhost:3000.

Frontend Features

• Deposit Page: Deposit NEAR, USDT, and ZCash.
• Swap Page: Exchange between NEAR, USDT, and ZCash.
• Withdraw Page: Withdraw assets from Near Intents to NEAR or ZCash.
• AI Agent Integration: Enables mixer transactions for anonymous transfers.

Learn More

• Next.js Documentation
• Near Protocol Documentation
• Bitte Protocol Documentation

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License

MIT License.

Contributing

Contributions are welcome! Feel free to submit a Pull Request.

Useful Links

• NEAR CLI Docs
• NEAR Rust SDK
• NEAR Discord
• NEAR Telegram Developers

This multichain platform provides decentralized and anonymous transactions, leveraging Near Intents, ZCash, and AI-driven Mixers to offer a high level of privacy and security for blockchain transactions.