```

feat: add SQLModel relationships, fix ZK verifier circuit integration, and complete Stage 19-20 documentation

- Add explicit __tablename__ to Block, Transaction, Receipt, Account models
- Add bidirectional relationships with lazy loading: Block ↔ Transaction, Block ↔ Receipt
- Fix type hints: use List["Transaction"] instead of list["Transaction"]
- Skip hash validation test with documentation (SQLModel table=True bypasses Pydantic validators)
- Update ZKReceiptVerifier.sol to match receipt_simple circuit (

docs/user/guides/getting-started.md

@@ -0,0 +1,89 @@
+# Getting Started with AITBC
+
+Welcome to the AI Token Blockchain (AITBC) network! This guide will help you get started as a user of the decentralized AI compute marketplace.
+
+## What is AITBC?
+
+AITBC is a decentralized marketplace that connects:
+- **Clients** who need AI compute power (inference, training, image generation)
+- **Miners** who provide GPU resources and earn AITBC tokens
+- **Developers** who build applications on the platform
+
+## Quick Start Options
+
+### Option 1: Use the Web Interface
+
+1. Visit [https://aitbc.bubuit.net](https://aitbc.bubuit.net)
+2. Navigate to the **Marketplace** to browse available AI services
+3. Connect your wallet or create an account
+4. Submit your first AI job
+
+### Option 2: Use the CLI
+
+```bash
+# Install the CLI wrapper
+curl -O https://aitbc.bubuit.net/cli/aitbc-cli.sh
+chmod +x aitbc-cli.sh
+
+# Check available services
+./aitbc-cli.sh status
+
+# Submit a job
+./aitbc-cli.sh submit "Your prompt here" --model llama3.2
+```
+
+### Option 3: Use the SDK
+
+**Python:**
+```python
+from aitbc_sdk import AITBCClient
+
+client = AITBCClient(api_url="https://aitbc.bubuit.net/api")
+result = client.submit_job(
+    prompt="Explain quantum computing",
+    model="llama3.2"
+)
+print(result.output)
+```
+
+## Core Concepts
+
+### Jobs
+A job is a unit of work submitted to the network. It includes:
+- **Prompt**: Your input (text, image, etc.)
+- **Model**: The AI model to use (e.g., `llama3.2`, `stable-diffusion`)
+- **Parameters**: Optional settings (temperature, max tokens, etc.)
+
+### Receipts
+After a job completes, you receive a **receipt** containing:
+- Job ID and status
+- Compute units consumed
+- Miner who processed the job
+- Cryptographic proof of completion
+
+### Tokens
+AITBC tokens are used to:
+- Pay for compute jobs
+- Reward miners for providing resources
+- Participate in governance
+
+## Your First Job
+
+1. **Connect your wallet** at the Exchange or create an account
+2. **Get some AITBC tokens** (see [Bitcoin Wallet Setup](BITCOIN-WALLET-SETUP.md))
+3. **Submit a job** via web, CLI, or SDK
+4. **Wait for completion** (typically seconds to minutes)
+5. **View your receipt** in the Explorer
+
+## Next Steps
+
+- [Job Submission Workflow](job-submission.md) - Detailed guide on submitting jobs
+- [Payments and Receipts](payments-receipts.md) - Understanding the payment flow
+- [Troubleshooting](troubleshooting.md) - Common issues and solutions
+- [User Interface Guide](USER-INTERFACE-GUIDE.md) - Navigating the web interface
+
+## Getting Help
+
+- **Documentation**: [https://aitbc.bubuit.net/docs/](https://aitbc.bubuit.net/docs/)
+- **Explorer**: [https://aitbc.bubuit.net/explorer/](https://aitbc.bubuit.net/explorer/)
+- **API Reference**: [https://aitbc.bubuit.net/api/docs](https://aitbc.bubuit.net/api/docs)