FCT Miner

A simple Facet transaction miner for the Sepolia network, designed to generate and send transactions on L1 to mine Facet Compute Token (FCT) on Facet. This tool can execute a set number of transactions or run indefinitely, depending on user preferences and remaining ETH balance.

Features

• Sends Facet transactions using the provided wallet.
• Monitors ETH balance to ensure mining halts if it drops below a user-specified threshold.
• Before each transaction, logs Current ETH Balance.
• After each transaction, logs L1/Facet Transaction Hashes, FCT Mint Amount, and FCT Mint Rate.
• Supports both single-run and recursive mining modes.

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Installation & Use

Prerequisites

• Node.js installed (tested with Node.js v18+).
• An Ethereum wallet with some Sepolia ETH (testnet ETH).
• A .env file with your private key, RPC endpoint, and minimum ETH balance threshold.

Setup

1. Open CommandPrompt
2. Create a new folder on your desktop (replacing <YourUsername>):

   mkdir "C:\Users\<YourUsername>\Desktop\fct-miner"

3. Change into that folder (replacing <YourUsername>):

   cd "C:\Users\<YourUsername>\Desktop\fct-miner"

4. Clone this repository into the current folder (note the . at the end to prevent a subfolder from being created):

   git clone https://github.com/0xFacet/fct-miner.git .

5. Install dependencies:

   npm install

6. Create a .env file in the project directory with the following content (replacing 0xYOUR_PRIVATE_KEY - keep the 0x prefix):

   PRIVATE_KEY=0xYOUR_PRIVATE_KEY
   FACET_RPC=https://sepolia.facet.org
   ETH_THRESHOLD=5000000000000000 # Minimum ETH balance in wei before stopping (example: 0.005 ETH)

7. Ensure you have Sepolia ETH in your wallet for transaction fees.

Usage

1. Run the miner script with:

   node miner.js

Give it a few seconds - eventually you'll be prompted to enter (1) or (2), choosing between:

• (1) Fixed Number of Transactions: Specify how many transactions to send.
• (2) Recursive Mining: Automatically send transactions until either you run out of ETH (per threshold set in .env) OR you manually stop the script (by pressing Ctrl+C).

Example Output: For each transaction, the miner logs:

• Current ETH Balance (before transaction)
• Transaction Count
• L1 Transaction Hash
• Facet Transaction Hash
• FCT Mint Amount
• FCT Mint Rate

License

This project is open-source and available under the MIT License.

Notes

• This tool is designed for the Sepolia testnet and is not suitable for production use.
• Verify your .env settings carefully to avoid exposing private keys.
• Be warned, if you choose Recursive Mining it's going to continuously send transactions using your ETH balance. Manage your ETH balance accordingly.
• The FCT issuance rate (per calldata gas unit) changes over time, read docs here.