Demos Network Node

The official node implementation for the Demos Network - a decentralized network enabling secure, cross-chain communication and computation.

Overview

This repository contains the core node software that allows machines to participate in the Demos Network as validators and service providers. The Demos Network is designed to facilitate secure cross-chain operations, privacy-preserving computations, and decentralized services across multiple blockchain ecosystems.

The Demos Yellowpaper

Demos is defined by the Yellowpaper publicly available in its own repository.

System Requirements

Minimum Requirements

• 4GB RAM
• 4 CPU cores (2GHz or higher)
• Modern SSD storage
• 200 Mbps internet connection
• Ubuntu 22.04 LTS or compatible Linux distribution

Recommended Specifications

• 8GB RAM or higher
• 6 CPU cores (2GHz or higher)
• High-performance SSD storage
• 1 Gbps internet connection

Installation

For detailed installation instructions, please refer to INSTALL.md. The installation guide covers:

• System prerequisites and dependencies
• Docker and container setup
• Node configuration and key generation
• Network peer configuration
• Troubleshooting common issues

Quick Start

1. Install prerequisites (Docker, Bun runtime)
2. Clone this repository
3. Install dependencies with bun install
4. Configure your node settings
5. Run ./run to start the node

For complete step-by-step instructions, see INSTALL.md.

Terminal User Interface (TUI)

By default, the node runs with an interactive TUI that provides:

• Categorized log tabs: View logs filtered by category (Core, Network, Chain, Consensus, etc.)
• Real-time node status: Block height, peer count, sync status in the header
• Keyboard navigation: Switch tabs with number keys (0-9), scroll with arrow keys or j/k

TUI Controls

Key	Action
0-9, -, =	Switch to tab
↑/↓ or j/k	Scroll logs
PgUp/PgDn	Page scroll
Home/End	Jump to top/bottom
A	Toggle auto-scroll
C	Clear current tab logs
H or ?	Show help
Q	Quit node

Legacy Mode (for developers)

For debugging and development, you can disable the TUI and use traditional scrolling log output:

./run -t           # Short form
./run --no-tui     # Long form

This provides linear console output that can be easily piped, searched with grep, or redirected to files.

Monitoring with Prometheus & Grafana

The node includes a full monitoring stack with Prometheus metrics and pre-built Grafana dashboards.

Enabling Metrics

Metrics are enabled by default. To configure, add to your .env file:

METRICS_ENABLED=true
METRICS_PORT=9090

The node will expose metrics at http://localhost:9090/metrics.

Starting the Monitoring Stack

cd monitoring
docker compose up -d

Access Grafana: http://localhost:3000 Default credentials: admin / demos

Available Metrics

Metric	Description
demos_block_height	Current block height
demos_seconds_since_last_block	Time since last block
demos_peer_online_count	Connected peers
demos_system_cpu_usage_percent	CPU utilization
demos_system_memory_usage_percent	Memory utilization
demos_service_docker_container_up	Container health status

Configuration

The node and monitoring stack are configurable via environment variables:

Node metrics (in .env):

Variable	Default	Description
METRICS_ENABLED	true	Enable/disable metrics endpoint
METRICS_PORT	9090	Node metrics endpoint port

Monitoring stack (in monitoring/.env):

Variable	Default	Description
PROMETHEUS_PORT	9091	Prometheus server port
GRAFANA_PORT	3000	Grafana dashboard port
GRAFANA_ADMIN_PASSWORD	demos	Grafana admin password
PROMETHEUS_RETENTION	15d	Data retention period

For detailed monitoring documentation, see monitoring/README.md.

Technology Stack

• Runtime: Bun (required due to performances and advanced native features)
• Language: TypeScript with modern ES modules
• Database: PostgreSQL with TypeORM
• Web Framework: Fastify with RESTful APIs
• Networking: Custom P2P protocol implementation
• Cryptography: Advanced encryption libraries and post-quantum algorithms

Configuration

After installation, configure your node by editing:

• .env: Core node settings including network endpoints
• demos_peerlist.json: Known peer connections for network participation

Network Ports

The following ports must be open for the node to function properly.

Note: These are the default ports. If you have modified any port settings in your .env file or run script flags, make sure to open those custom ports instead.

Required Ports

Port	Protocol	Description
53550	TCP	Node RPC API
53551	TCP/UDP	OmniProtocol P2P communication
7047	TCP	TLSNotary server
55000-60000	TCP/UDP	WebSocket proxy for TLSNotary

Optional Ports

Port	Protocol	Description
9090	TCP	Metrics endpoint (monitoring)
9091	TCP	Prometheus server (monitoring stack)
3000	TCP	Grafana dashboard (monitoring stack)
5332	TCP	PostgreSQL (local only, do not expose externally)

Firewall example (ufw):

# Required
sudo ufw allow 53550/tcp        # Node RPC
sudo ufw allow 53551            # OmniProtocol (TCP+UDP)
sudo ufw allow 7047/tcp         # TLSNotary
sudo ufw allow 55000:60000      # TLSNotary WS proxy (TCP+UDP)

Security

The Demos Network node implements multiple layers of security:

• Cryptographic identity management with public/private key pairs
• Post-quantum cryptographic algorithms for future-proof security
• Secure peer-to-peer communication protocols
• Privacy-preserving computation capabilities

Important: Always keep your private key (.demos_identity file) secure and never share it publicly.

Network Participation

Once your node is running, it will:

1. Generate a unique cryptographic identity
2. Connect to other network peers
3. Participate in consensus mechanisms
4. Process cross-chain transactions and computations
5. Contribute to network security and decentralization

Local Development Network (Devnet)

For local development and testing, you can run a 4-node network using Docker Compose instead of requiring 4 separate VPSes.

Quick Start

cd devnet
./scripts/setup.sh           # One-time setup (generates identities + peerlist)
docker-compose up -d         # Start the 4-node network
docker-compose logs -f       # View logs from all nodes
docker-compose down          # Stop the network

Requirements

• Docker and Docker Compose
• BuildKit enabled (recommended): export DOCKER_BUILDKIT=1

Node Ports

Node	RPC Port	Omni Port
node-1	53551	53561
node-2	53552	53562
node-3	53553	53563
node-4	53554	53564

For detailed devnet documentation, see devnet/README.md.

Development

This is the official implementation maintained by KyneSys Labs. The codebase follows TypeScript best practices with comprehensive error handling and type safety.

Support

For technical support and community discussions, visit demos.sh.

License

This project is licensed under the MIT License - see the LICENSE file for details.

Contributing

We welcome contributions to the Demos Network node implementation! Before contributing, please read our comprehensive Contributing Guide which covers:

• Code style and naming conventions
• Development workflow and best practices
• AI-assisted development guidelines
• Pull request process and review requirements
• Testing and quality standards

For quick reference, also see:

• Coding Guidelines - Detailed code style guide
• AI Development Guidelines - Essential for AI-assisted development

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Demos Network - Building the future of decentralized, cross-chain computing.