{ config, specialConfig, lib, pkgs, ... }:
{
    #################################
    # Bitcoin Core (bitcoind)
    #################################
    services.bitcoind = {
      enable = true;
      address = "0.0.0.0";
      port = 23002;
      listen = true;
      listenWhitelisted = true;
      whitelistedPort = 8335;
      # dataDir = "/var/lib/bitcoind";
      rpc = {
        address = "0.0.0.0";
        port = 8332;
        threads = 4;
        allowip = [
          "0.0.0.0"
        ];
      };
      regtest = false;
      # network = "regtest"; # or "mainnet"
      dataDirReadableByGroup = false;
      disablewallet = null;
      dbCache = 4000;
      prune = 10000;
      txindex = true;
      zmqpubrawblock = "tcp://0.0.0.0:28332";
      zmqpubrawtx = "tcp://0.0.0.0:28333";
      user = "bitcoind";
      group = "bitcoind";
    };
}