Build a DAPA Wallet

Overview

DAPA is a privacy-focused cryptocurrency built with BlockDAG, Homomorphic Encryption, Zero-Knowledge Proofs, and Smart Contracts. This guide covers building and running a DAPA wallet from source.

System Requirements

Hardware Requirements

• RAM: Minimum 4GB, Recommended 8GB+
• Storage: 50GB+ free space (for blockchain data and precomputed tables)
• CPU: Multi-core processor (for compilation and wallet operations)
• Network: Stable internet connection for blockchain synchronization

Software Requirements

• Operating System: Linux (Ubuntu 20.04+ recommended)
• Rust: Latest stable version (1.70+)
• Build Tools: git, cmake, clang, pkg-config
• Dependencies: OpenSSL development libraries

Installation Prerequisites

1. Install Rust

curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh
source ~/.cargo/env
rustup update stable

2. Install Build Dependencies (Ubuntu/Debian)

sudo apt update
sudo apt install -y \
    git \
    cmake \
    clang \
    pkg-config \
    libssl-dev \
    build-essential \
    curl

3. Install Build Dependencies (CentOS/RHEL)

sudo yum groupinstall "Development Tools"
sudo yum install -y git cmake clang openssl-devel

Building DAPA from Source

1. Clone the Repository

git clone https://github.com/dapahe/dapa-blockchain.git
cd dapa-blockchain

2. Build the Project

# Build all components (daemon, wallet, miner)
cargo build --release
 
# Or build specific components
cargo build --release --bin dapa_wallet
cargo build --release --bin dapa_daemon
cargo build --release --bin dapa_miner

3. Verify Build

After successful compilation, binaries will be in:

ls -la target/release/
# Should show: dapa_daemon, dapa_wallet, dapa_miner

Initial Setup

1. Create Directory Structure

mkdir -p ~/dapa-node/{wallets,logs,data}
cd ~/dapa-node

2. Copy Binaries

cp /path/to/dapa-blockchain/target/release/dapa_* ~/dapa-node/

3. Generate Precomputed Tables

Warning: This can take significant time and disk space

./dapa_wallet --precomputed-tables-l1 26

Wallet Configuration

1. Create Wallet Credentials File

Create wallet_credentials.json:

{
  "wallet_1": {
    "username": "your_username",
    "password": "your_secure_password"
  }
}

2. Wallet Creation Methods

Interactive Creation

./dapa_wallet
# At prompt:
# > create
# Follow prompts for wallet name and password

Command Line Parameters

./dapa_wallet --wallet-path ./wallets/wallet_1 --password "your_password"

Network Configuration

1. Mainnet Configuration

./dapa_wallet --network mainnet --daemon-address http://node.dapahe.com:20101

2. Testnet Configuration

./dapa_wallet --network testnet --daemon-address http://testnet.dapahe.com:20101

3. Local Development

# Start local daemon first
./dapa_daemon --network dev
 
# Then connect wallet
./dapa_wallet --network dev --daemon-address http://127.0.0.1:20101

RPC Server Setup

1. Start RPC Server from CLI

# In wallet CLI
> start_rpc_server 127.0.0.1:20101 username password

2. Start with RPC Enabled

./dapa_wallet \
  --rpc-bind-address "127.0.0.1:20101" \
  --rpc-username "admin" \
  --rpc-password "secure_password" \
  --wallet-path ./wallets/my_wallet \
  --password "wallet_password"

Essential Wallet Operations

1. Basic Commands (Interactive Mode)

2. Transaction Example

In wallet CLI:

> transfer
Enter destination address: dap:address_here
Enter amount: 1.5
Enter asset (default DAPA): [press enter]

Important Files and Directories

Directory Structure

dapa-node/
├── dapa_wallet              # Wallet executable
├── dapa_daemon              # Daemon executable  
├── dapa_miner               # Miner executable
├── wallets/                 # Wallet storage
│   └── wallet_1/
├── logs/                    # Application logs
├── precomputed_tables_26.bin # Precomputed tables
└── wallet_credentials.json  # Automation credentials

Critical Files

• Wallet Files: wallets/*/ - Contains encrypted wallet data
• Precomputed Tables: precomputed_tables_*.bin - Required for operations
• Logs: logs/ - Debugging and operational logs
• Config: Various JSON configuration files

Security Considerations

1. Wallet Security

• Use strong, unique passwords for each wallet
• Backup wallet seed phrases securely
• Store wallet files in encrypted directories
• Never share private keys or seeds

2. RPC Security

• Bind RPC only to localhost unless necessary
• Use strong RPC authentication credentials
• Consider firewall rules for RPC ports
• Monitor RPC access logs

3. Network Security

• Verify daemon addresses before connecting
• Use HTTPS endpoints when available
• Monitor network connections
• Keep software updated

Troubleshooting

Common Issues

1. Build Failures

# Update Rust
rustup update stable
 
# Clear cache and rebuild
cargo clean
cargo build --release

2. Missing Dependencies

# Ubuntu/Debian
sudo apt install libssl-dev pkg-config cmake clang
 
# Check Rust installation
rustc --version
cargo --version

3. Wallet Connection Issues

# Check daemon connectivity
curl http://node.dapahe.com:20101
 
# Verify wallet files exist
ls -la wallets/
 
# Check logs
tail -f logs/dapa-wallet.log

4. RPC Authentication Errors

• Verify username/password in credentials file
• Check RPC bind address and port
• Ensure wallet is properly opened before RPC calls

Log Analysis

# Real-time log monitoring
tail -f logs/dapa-wallet.log
 
# Search for errors
grep -i error logs/dapa-wallet.log
 
# Filter by date
grep "2024-09-18" logs/dapa-wallet.log

Performance Optimization

1. Precomputed Tables

2. System Optimization

# Increase file descriptor limits
ulimit -n 65536
 
# Optimize for SSD storage
echo noop | sudo tee /sys/block/sda/queue/scheduler

Maintenance

1. Regular Tasks

• Monitor disk space for blockchain data
• Backup wallet files regularly
• Update software when new versions release
• Review and rotate logs

2. Backup Strategy

# Backup wallet files
tar -czf wallet_backup_$(date +%Y%m%d).tar.gz wallets/
 
# Backup configuration
cp wallet_credentials.json config_backup.json
 
# Store seed phrases securely offline

Support and Resources

Official Resources

• Documentation: https://docs.dapahe.com/ (opens in a new tab)
• GitHub: https://github.com/dapahe/dapa-blockchain (opens in a new tab)
• Community: DAPA official channels

Development Environment

• Use testnet for development and testing
• Never test with mainnet funds
• Monitor resource usage during development
• Keep development and production environments separate

Note: This guide is based on analysis of DAPA blockchain source code and operational testing. Requirements may vary based on specific use cases and network conditions. Always verify compatibility with the latest DAPA releases.

The DAPA blockchain uses advanced cryptographic features that require significant computational resources. Plan system resources accordingly for optimal performance.