[Unit]
Description=AITBC Real Mining Blockchain Service
After=network.target

[Service]
Type=simple
User=root
Group=root
WorkingDirectory=/opt/aitbc
Environment=PATH=/usr/bin:/usr/local/bin:/usr/bin:/bin
Environment=NODE_ID=aitbc
Environment=PYTHONPATH=/opt/aitbc/production/services
EnvironmentFile=/opt/aitbc/production/.env

# Real mining execution
ExecStart=/opt/aitbc/venv/bin/python /opt/aitbc/production/services/mining_blockchain.py
ExecReload=/bin/kill -HUP $MAINPID
KillMode=mixed
TimeoutStopSec=10

# Mining reliability
Restart=always
RestartSec=5
StartLimitBurst=5
StartLimitIntervalSec=60

# Mining logging
StandardOutput=journal
StandardError=journal
SyslogIdentifier=aitbc-mining-blockchain

# Mining security
NoNewPrivileges=true
ProtectSystem=strict
ProtectHome=true
ReadWritePaths=/var/lib/aitbc/data/blockchain /var/log/aitbc/production/blockchain

# Mining performance
LimitNOFILE=65536
LimitNPROC=4096
MemoryMax=4G
CPUQuota=80%

[Install]
WantedBy=multi-user.target