pow0-cli

A CLI tool to generate SHA-256 hashes with a specified number of leading zeros.

Installation

npm install -g pow0-cli

Usage

Basic Usage

# Generate hash with 4 leading zeros for string "hello"
pow hello

# Set difficulty to 6
pow hello --difficulty=6

Input from stdin

echo "hello world" | pow --difficulty=5

Options

• --difficulty=<number> - Number of leading zeros required in the hash (default: 4)

Example Output

$ pow hello --difficulty=4
Hash: 0000d7ad6b4a9a2c7a8e7c8b3a5e9b1c2d3f4e5f6a7b8c9d0e1f2a3b4c5d6e7f8
Nonce: 36916

How It Works

This tool appends a nonce (random number) to the input string and generates SHA-256 hashes until it finds one with the specified number of leading zeros. This process is similar to the Proof of Work concept used in blockchain technology.

Development

Requirements

• Node.js >= 18
• TypeScript

Local Development

# Clone repository
git clone <repository-url>
cd pow0-cli

# Install dependencies
npm install

# Run in development mode
npm run dev hello --difficulty=4

# Build
npm run build

# Run built version
npm start hello --difficulty=4

License

ISC