How to set up a Kaspa node and miner? (KAS mining)

Understanding Kaspa Node Architecture

1. Kaspa operates on a blockDAG structure, enabling parallel block creation and high throughput without sacrificing decentralization.

2. A full node validates transactions, relays blocks, and maintains the entire history of the DAG using the GHOSTDAG protocol.

3. Unlike traditional blockchain nodes, Kaspa nodes must synchronize thousands of concurrent tips, requiring robust memory and disk I/O performance.

4. The official Kaspad daemon is written in Go and supports Windows, Linux, and macOS—though production deployments strongly favor Linux-based servers.

5. Node synchronization begins from genesis and may take several days depending on network conditions, SSD speed, and available RAM—minimum 16GB RAM and 2TB NVMe storage are recommended for stable operation.

Installing Kaspad on Linux

1. Download the latest Kaspad binary from the official GitHub releases page under kaspanet/kaspad.

2. Extract the archive into /usr/local/bin and ensure kaspad and kaspawallet binaries are executable via chmod +x.

3. Create a dedicated user (e.g., kaspa) and configure a systemd service file to manage automatic startup and graceful shutdown.

4. Initialize the data directory with --init flag before first launch to generate configuration files and cryptographic keys.

5. Launch kaspad with --testnet=false for mainnet or --testnet=true for testing; avoid running RPC endpoints publicly without authentication and firewall restrictions.

Configuring GPU Mining for KAS

1. Kaspa uses a custom proof-of-work algorithm called kHeavyHash, which is intentionally GPU-friendly and resistant to ASIC dominance.

2. Compatible miners include kheavyminer, kashminer, and open-source forks optimized for NVIDIA CUDA and AMD ROCm stacks.

3. Install appropriate drivers: NVIDIA 525+ for CUDA 12.x support, or AMD Adrenalin 23.5+ for ROCm 5.5 compatibility.

4. Configure miner.json with pool URL (e.g., stratum+tcp://pool.kaspa.org:3000), wallet address, and worker name—no registration required.

5. Monitor hashrate stability using nvidia-smi or rocm-smi; thermal throttling or memory overclocking errors directly reduce effective kH/s output.

Securing Wallet Integration

1. Use kaspawallet CLI to generate a new HD wallet seed and derive addresses compatible with Kaspa’s UTXO model.

2. Import the wallet into kaspad via --wallet option or connect externally using GRPC over localhost with TLS encryption enabled.

3. Set up transaction fee policies manually—Kaspa does not enforce dynamic fees, so miners must specify priority levels per transaction.

4. Never expose wallet.dat or seed phrases on shared systems; use hardware security modules (HSMs) or air-gapped signing for large-scale operations.

5. Enable --txindex and --addrindex flags if building custom analytics tools that require full address-based query capabilities.

Frequently Asked Questions

Q: Can I mine Kaspa with CPU only?Yes, but CPU mining yields negligible returns compared to modern GPUs—kHeavyHash is memory-hard and favors high-bandwidth VRAM over raw core count.

Q: Is solo mining viable on Kaspa?No, due to the probabilistic nature of blockDAG tip selection and low individual hash share, pool mining remains the only practical method for consistent rewards.

Q: Why does my node stall at 98% sync?This often indicates insufficient RAM during the pruning phase or filesystem corruption—verify disk health with smartctl and increase swap space temporarily to complete synchronization.

Q: Do I need to run a wallet alongside kaspad to receive mining payouts?Not necessarily—the pool handles payout distribution directly to your configured address; however, running kaspawallet locally enables offline transaction signing and balance verification.