server=1                              # need RPC for btcpay.
rpcbind=127.0.0.1                     # loopback is default for 0.18.0 but no harm making sure.
whitelist=127.0.0.1                   # for nbxplorer.
rpcallowip=127.0.0.1/32               # loopback is default but again no harm.
zmqpubrawblock=tcp://127.0.0.1:28332  # needed for lightning.
zmqpubrawtx=tcp://127.0.0.1:28333     # needed for lightning.
prune=5000                            # Recommended if not enough disk space for full 600+GB blockchain.