TAC Blockscout Rollback

This project demonstrates how to send a mock rollback transaction from TON to EVM using the @tonappchain/sdk. It performs a test transfer of Jettons from a TON wallet to a special EVM proxy contract and tracks the transaction on-chain.

---

📁 Project Structure

• index.ts — Main script to send and track a rollback transaction.
• .env — Contains wallet configuration (mnemonic, Jetton address, etc.).
• package.json — Project dependencies.
• tsconfig.json — TypeScript compiler settings.

---

⚙️ Prerequisites

• Node.js v16 or newer
• NPM
• A Jetton token deployed on TON Testnet
• TON testnet wallet mnemonic (optional if using default provided)

---

🛠 Installation

1. Clone or download this repository:

   git clone https://github.com/EvgenKor/tac-blockscout-rollback.git
   cd tac-blockscout-rollback

2. Install project dependencies:

   npm install

---

🔧 Configuration

This project uses a .env file to configure wallet and token settings.

Example .env file (already included for testing):

TON_WALLET_VERSION="V3R2"
TON_WALLET_MNEMONICS="art tank game enhance acquire ivory rude moral verify cluster typical ill monster bread patient again cute volcano hill seminar mass exile crater floor"
TON_JETTON_ADDRESS="EQDqeTtBiQfpPFSE-XcB1DhUlWRLPPvs6caCuUAXPHQ9Li-W"

✅ This mnemonic and jetton is created specifically for public testing and is safe to use for testnet-only experiments.
❗ If you want to use your own TON wallet or jetton, ensure that:

• The wallet has testnet TON for gas.
• It holds Jettons of the specified TON_JETTON_ADDRESS.
• You specify the correct wallet version — one of:
  V2R1, V2R2, V3R1, V3R2, V4, V5R1, HIGHLOAD_V3
• TON_JETTON_ADDRESS presented in EQ-format

---

🪙 Creating Your Own Jetton (Optional)

To mint and use your own Jetton on the TON Testnet, use the official TON Jetton Minter:

1. Open the link: https://minter.ton.org/?testnet=true
2. Connect your testnet wallet.
3. Mint a Jetton with any name/symbol.
4. Copy the resulting Jetton address.
5. Paste it into your .env under TON_JETTON_ADDRESS (EQ-prefixed).

---

🚀 Running the Script

✅ Recommended (with ts-node)

npx ts-node index.ts

🧱 Or: Build and Run Manually

1. Compile TypeScript:

   npm run build

2. Run the compiled output:

   npm run start

Make sure .env is correctly set up before running either version.

---

🧪 What the Script Does

• Initializes TacSdk with TON Testnet.
• Retrieves the EVM-side address of the selected TON Jetton.
• Sends a mock cross-chain transaction to an EVM proxy address (mockWithDefaultError).
• Starts tracking the transaction on-chain and prints results.