init.cpp

// Copyright (c) 2009-2010 Satoshi Nakamoto
// Copyright (c) 2009-2022 The Bitcoin Core developers
// Copyright (c) 2014-2026 The DigiByte Core developers
// Distributed under the MIT software license, see the accompanying
// file COPYING or http://www.opensource.org/licenses/mit-license.php.
#if defined(HAVE_CONFIG_H)
#include <config/digibyte-config.h>
#endif

#include <init.h>

#include <kernel/checks.h>
#include <kernel/mempool_persist.h>
#include <kernel/validation_cache_sizes.h>

#include <addrdb.h>
#include <addrman.h>
#include <banman.h>
#include <blockfilter.h>
#include <chain.h>
#include <chainparams.h>
#include <chainparamsbase.h>
#include <clientversion.h>
#include <common/args.h>
#include <common/system.h>
#include <compat/sanity.h>
#include <consensus/amount.h>
#include <dbwrapper.h>
#include <deploymentstatus.h>
#include <hash.h>
#include <httprpc.h>
#include <httpserver.h>
#include <index/blockfilterindex.h>
#include <index/coinstatsindex.h>
#include <index/digidollarstatsindex.h>
#include <index/txindex.h>
#include <init/common.h>
#include <interfaces/chain.h>
#include <interfaces/init.h>
#include <interfaces/node.h>
#include <logging.h>
#include <mapport.h>
#include <node/miner.h>
#include <net.h>
#include <net_permissions.h>
#include <net_processing.h>
#include <netbase.h>
#include <netgroup.h>
#include <node/blockmanager_args.h>
#include <primitives/block.h>
#include <node/blockstorage.h>
#include <node/caches.h>
#include <node/chainstate.h>
#include <node/chainstatemanager_args.h>
#include <node/context.h>
#include <node/interface_ui.h>
#include <node/kernel_notifications.h>
#include <node/mempool_args.h>
#include <node/mempool_persist_args.h>
#include <node/miner.h>
#include <digidollar/health.h>
#include <node/peerman_args.h>
#include <node/ui_interface.h>
#include <node/validation_cache_args.h>
#include <oracle/bundle_manager.h>
#include <oracle/node.h>
#include <oracle/signing_orchestrator.h>
#include <script/interpreter.h>
#include <policy/feerate.h>
#include <policy/fees.h>
#include <policy/fees_args.h>
#include <policy/policy.h>
#include <policy/settings.h>
#include <protocol.h>
#include <rpc/blockchain.h>
#include <rpc/register.h>
#include <rpc/server.h>
#include <rpc/util.h>
#include <scheduler.h>
#include <script/sigcache.h>
#include <policy/policy.h>
#include <shutdown.h>
#include <sync.h>
#include <timedata.h>
#include <torcontrol.h>
#include <txdb.h>
#include <txmempool.h>
#include <txorphanage.h>
#include <util/asmap.h>
#include <util/chaintype.h>
#include <util/check.h>
#include <util/fs.h>
#include <util/fs_helpers.h>
#include <util/moneystr.h>
#include <util/result.h>
#include <util/strencodings.h>
#include <util/string.h>
#include <util/syserror.h>
#include <util/system.h>
#include <util/thread.h>
#include <util/threadnames.h>
#include <util/time.h>
#include <util/translation.h>
#include <validation.h>
#include <validationinterface.h>
#include <walletinitinterface.h>

#include <algorithm>
#include <condition_variable>
#include <cstdint>
#include <cstdio>
#include <fstream>
#include <functional>
#include <limits>
#include <set>
#include <stdint.h>
#include <stdio.h>
#include <string>
#include <thread>
#include <vector>

#ifndef WIN32
#include <attributes.h>
#include <cerrno>
#include <signal.h>
#include <sys/stat.h>
#endif

#include <boost/algorithm/string/replace.hpp>
#include <boost/signals2/signal.hpp>

#if ENABLE_ZMQ
#include <zmq/zmqabstractnotifier.h>
#include <zmq/zmqnotificationinterface.h>
#include <zmq/zmqrpc.h>
#endif

using kernel::DumpMempool;
using kernel::LoadMempool;
using kernel::ValidationCacheSizes;

using node::ApplyArgsManOptions;
// using node::BlockManager;  // Commented out - conflicts with global BlockManager in validation.h
using node::CacheSizes;
using node::CalculateCacheSizes;
using node::DEFAULT_PERSIST_MEMPOOL;
using node::DEFAULT_PRINTPRIORITY;
using node::DEFAULT_STOPATHEIGHT;
using node::fReindex;
using node::KernelNotifications;
using node::LoadChainstate;
using node::MempoolPath;
using node::NodeContext;
using node::ShouldPersistMempool;
using node::ImportBlocks;
using node::VerifyLoadedChainstate;

static constexpr bool DEFAULT_PROXYRANDOMIZE{true};
static constexpr bool DEFAULT_REST_ENABLE{false};
static constexpr bool DEFAULT_I2P_ACCEPT_INCOMING{true};
static constexpr bool DEFAULT_STOPAFTERBLOCKIMPORT{false};

#ifdef WIN32
// Win32 LevelDB doesn't use filedescriptors, and the ones used for
// accessing block files don't count towards the fd_set size limit
// anyway.
#define MIN_CORE_FILEDESCRIPTORS 0
#else
// Reserve table descriptors for the block index and both normal and snapshot chainstates.
#define MIN_CORE_FILEDESCRIPTORS (150 + 3 * BUFFERED_DB_TABLE_CACHE_FILES)
#endif

static const char* DEFAULT_ASMAP_FILENAME="ip_asn.map";

/**
 * The PID file facilities.
 */
static const char* DIGIBYTE_PID_FILENAME = "digibyted.pid";

static fs::path GetPidFile(const ArgsManager& args)
{
    return AbsPathForConfigVal(args, args.GetPathArg("-pid", DIGIBYTE_PID_FILENAME));
}

[[nodiscard]] static bool CreatePidFile(const ArgsManager& args)
{
    std::ofstream file{GetPidFile(args)};
    if (file) {
#ifdef WIN32
        tfm::format(file, "%d\n", GetCurrentProcessId());
#else
        tfm::format(file, "%d\n", getpid());
#endif
        return true;
    } else {
        return InitError(strprintf(_("Unable to create the PID file '%s': %s"), fs::PathToString(GetPidFile(args)), SysErrorString(errno)));
    }
}

/** Set default mining algo to scrypt */
int miningAlgo = ALGO_SCRYPT;

//////////////////////////////////////////////////////////////////////////////
//
// Shutdown
//

//
// Thread management and startup/shutdown:
//
// The network-processing threads are all part of a thread group
// created by AppInit() or the Qt main() function.
//
// A clean exit happens when StartShutdown() or the SIGTERM
// signal handler sets ShutdownRequested(), which makes main thread's
// WaitForShutdown() interrupts the thread group.
// And then, WaitForShutdown() makes all other on-going threads
// in the thread group join the main thread.
// Shutdown() is then called to clean up database connections, and stop other
// threads that should only be stopped after the main network-processing
// threads have exited.
//
// Shutdown for Qt is very similar, only it uses a QTimer to detect
// ShutdownRequested() getting set, and then does the normal Qt
// shutdown thing.
//

#if HAVE_SYSTEM
static void ShutdownNotify(const ArgsManager& args)
{
    std::vector<std::thread> threads;
    for (const auto& cmd : args.GetArgs("-shutdownnotify")) {
        threads.emplace_back(runCommand, cmd);
    }
    for (auto& t : threads) {
        t.join();
    }
}
#endif
void Interrupt(NodeContext& node)
{
#if HAVE_SYSTEM
    ShutdownNotify(*node.args);
#endif
    InterruptHTTPServer();
    InterruptHTTPRPC();
    InterruptRPC();
    InterruptREST();
    InterruptTorControl();
    InterruptMapPort();
    if (node.connman)
        node.connman->Interrupt();
    if (g_txindex) {
        g_txindex->Interrupt();
    }
    ForEachBlockFilterIndex([](BlockFilterIndex& index) { index.Interrupt(); });
    if (g_coin_stats_index) {
        g_coin_stats_index->Interrupt();
    }
    if (g_digidollar_stats_index) {
        g_digidollar_stats_index->Interrupt();
    }
}

void Shutdown(NodeContext& node)
{
    static Mutex g_shutdown_mutex;
    TRY_LOCK(g_shutdown_mutex, lock_shutdown);
    if (!lock_shutdown) return;
    LogPrintf("%s: In progress...\n", __func__);
    Assert(node.args);

    /// Note: Shutdown() must be able to handle cases in which initialization failed part of the way,
    /// for example if the data directory was found to be locked.
    /// Be sure that anything that writes files or flushes caches only does this if the respective
    /// module was initialized.
    util::ThreadRename("shutoff");
    if (node.mempool) node.mempool->AddTransactionsUpdated(1);
    if (node.stempool) node.stempool->AddTransactionsUpdated(1);

    // Stop the oracle price threads now. They fetch prices from exchanges over
    // the network and hand messages to the connection manager, so they have to
    // be gone before networking is torn down and before the process starts
    // cleaning up the network and encryption libraries they use.
    //
    // Only the threads stop here. The oracles and the manager that holds them
    // stay alive until the end of this function, because the remote procedure
    // call server, the peer-to-peer message handler and the block
    // notifications all look oracles up through that manager and are all still
    // running at this point.
    //
    // The signing orchestrator is likewise only told here to stop listening
    // for new blocks. Unregistering stops new notifications; it does not wait
    // for a notification that is already running. Block notifications run on
    // the scheduler thread and hold a plain pointer to the orchestrator and to
    // the oracle they sign with, so freeing either one here leaves that thread
    // reading freed memory. When that happened the scheduler thread waited
    // forever on a lock inside freed memory, the shutdown thread waited
    // forever for the scheduler thread, and the node did not finish shutting
    // down.
    OracleSigningOrchestrator::StopBlockNotifications();
    OracleManager::StopOraclePriceThreads();
    g_get_oracle_consensus_price = nullptr;

    StopHTTPRPC();
    StopREST();
    StopRPC();
    StopHTTPServer();
    for (const auto& client : node.chain_clients) {
        client->flush();
    }
    StopMapPort();

    // Because these depend on each-other, we make sure that neither can be
    // using the other before destroying them.
    if (node.peerman) UnregisterValidationInterface(node.peerman.get());
    if (node.connman) node.connman->Stop();

    StopTorControl();

    // After everything has been shut down, but before things get flushed, stop the
    // CScheduler/checkqueue, scheduler and load block thread.
    if (node.scheduler) node.scheduler->stop();
    if (node.chainman && node.chainman->m_thread_load.joinable()) node.chainman->m_thread_load.join();
    StopScriptCheckWorkerThreads();

    // After the threads that potentially access these pointers have been stopped,
    // destruct and reset all to nullptr.
    node.peerman.reset();
    node.connman.reset();
    // The signing orchestrator and the bundle manager each hold a plain pointer
    // to the connection manager. It has just been destroyed, and both objects
    // live on for the rest of this function, so clear the pointers now rather
    // than leave them aimed at freed memory. Test each global instead of asking
    // for it: the accessor for the bundle manager builds one on demand, and
    // building anything while shutting down would be worse than the dangling
    // pointer this avoids.
    if (g_signing_orchestrator) g_signing_orchestrator->SetConnman(nullptr);
    if (g_oracle_bundle_manager) g_oracle_bundle_manager->SetConnman(nullptr);
    node.banman.reset();
    node.addrman.reset();
    node.netgroupman.reset();

    if (node.mempool && node.mempool->GetLoadTried() && ShouldPersistMempool(*node.args)) {
        DumpMempool(*node.mempool, MempoolPath(*node.args));
    }

    // Drop transactions we were still watching, and record fee estimations.
    if (node.fee_estimator) node.fee_estimator->Flush();

    // FlushStateToDisk generates a ChainStateFlushed callback, which we should avoid missing
    if (node.chainman) {
        LOCK(cs_main);
        for (Chainstate* chainstate : node.chainman->GetAll()) {
            if (chainstate->CanFlushToDisk()) {
                chainstate->ForceFlushStateToDisk();
            }
        }
    }

    // After there are no more peers/RPC left to give us new data which may generate
    // CValidationInterface callbacks, flush them...
    GetMainSignals().FlushBackgroundCallbacks();

    // Stop and delete all indexes only after flushing background callbacks.
    if (g_txindex) {
        g_txindex->Stop();
        g_txindex.reset();
    }
    if (g_coin_stats_index) {
        g_coin_stats_index->Stop();
        g_coin_stats_index.reset();
    }
    if (g_digidollar_stats_index) {
        g_digidollar_stats_index->Stop();
        g_digidollar_stats_index.reset();
    }
    ForEachBlockFilterIndex([](BlockFilterIndex& index) { index.Stop(); });
    DestroyAllBlockFilterIndexes();

    // Any future callbacks will be dropped. This should absolutely be safe - if
    // missing a callback results in an unrecoverable situation, unclean shutdown
    // would too. The only reason to do the above flushes is to let the wallet catch
    // up with our current chain to avoid any strange pruning edge cases and make
    // next startup faster by avoiding rescan.

    if (node.chainman) {
        LOCK(cs_main);
        for (Chainstate* chainstate : node.chainman->GetAll()) {
            if (chainstate->CanFlushToDisk()) {
                chainstate->ForceFlushStateToDisk();
                chainstate->ResetCoinsViews();
            }
        }
        // pblocktree removed in v26.2 - now managed by BlockManager
    }
    for (const auto& client : node.chain_clients) {
        client->stop();
    }

#if ENABLE_ZMQ
    if (g_zmq_notification_interface) {
        UnregisterValidationInterface(g_zmq_notification_interface.get());
        g_zmq_notification_interface.reset();
    }
#endif

    node.chain_clients.clear();
    UnregisterAllValidationInterfaces();

    // Destroy the oracle objects only now, when nothing is left that calls into
    // them. The remote procedure call server, the connection manager, the
    // scheduler thread, the indexes and the wallets have all stopped, and every
    // queued block notification has already been run. Destroying them any
    // earlier leaves another thread holding a pointer into freed memory.
    //
    // The oracle manager and the oracles it holds go last, because the signing
    // orchestrator and the bundle manager both look oracles up through it.
    OracleSigningOrchestrator::Shutdown();
    OracleBundleManager::Shutdown();
    OracleManager::StopOracleService();
    GetMainSignals().UnregisterBackgroundSignalScheduler();
    // init::UnsetGlobals();  // Not needed in v26.2
    node.kernel.reset();
    node.mempool.reset();
    node.fee_estimator.reset();
    node.chainman.reset();
    node.scheduler.reset();

    try {
        if (!fs::remove(GetPidFile(*node.args))) {
            LogPrintf("%s: Unable to remove PID file: File does not exist\n", __func__);
        }
    } catch (const fs::filesystem_error& e) {
        LogPrintf("%s: Unable to remove PID file: %s\n", __func__, fsbridge::get_filesystem_error_message(e));
    }

    node.args = nullptr;
    LogPrintf("%s: done\n", __func__);
}

/**
 * Signal handlers are very limited in what they are allowed to do.
 * The execution context the handler is invoked in is not guaranteed,
 * so we restrict handler operations to just touching variables:
 */
#ifndef WIN32
static void HandleSIGTERM(int)
{
    StartShutdown();
}

static void HandleSIGHUP(int)
{
    LogInstance().m_reopen_file = true;
}
#else
static BOOL WINAPI consoleCtrlHandler(DWORD dwCtrlType)
{
    StartShutdown();
    Sleep(INFINITE);
    return true;
}
#endif

#ifndef WIN32
static void registerSignalHandler(int signal, void(*handler)(int))
{
    struct sigaction sa;
    sa.sa_handler = handler;
    sigemptyset(&sa.sa_mask);
    sa.sa_flags = 0;
    sigaction(signal, &sa, nullptr);
}
#endif

static boost::signals2::connection rpc_notify_block_change_connection;
static void OnRPCStarted()
{
    rpc_notify_block_change_connection = uiInterface.NotifyBlockTip_connect(std::bind(RPCNotifyBlockChange, std::placeholders::_2));
}

static void OnRPCStopped()
{
    rpc_notify_block_change_connection.disconnect();
    RPCNotifyBlockChange(nullptr);
    g_best_block_cv.notify_all();
    LogPrint(BCLog::RPC, "RPC stopped.\n");
}

void SetupServerArgs(ArgsManager& argsman)
{
    SetupHelpOptions(argsman);
    argsman.AddArg("-help-debug", "Print help message with debugging options and exit", ArgsManager::ALLOW_ANY, OptionsCategory::DEBUG_TEST); // server-only for now

    init::AddLoggingArgs(argsman);

    const auto defaultBaseParams = CreateBaseChainParams(ChainType::MAIN);
    const auto testnetBaseParams = CreateBaseChainParams(ChainType::TESTNET);
    const auto signetBaseParams = CreateBaseChainParams(ChainType::SIGNET);
    const auto regtestBaseParams = CreateBaseChainParams(ChainType::REGTEST);
    const auto defaultChainParams = CreateChainParams(argsman, ChainType::MAIN);
    const auto testnetChainParams = CreateChainParams(argsman, ChainType::TESTNET);
    const auto signetChainParams = CreateChainParams(argsman, ChainType::SIGNET);
    const auto regtestChainParams = CreateChainParams(argsman, ChainType::REGTEST);

    // Hidden Options
    std::vector<std::string> hidden_args = {
        "-dbcrashratio", "-forcecompactdb",
        // GUI args. These will be overwritten by SetupUIArgs for the GUI
        "-choosedatadir", "-lang=<lang>", "-min", "-resetguisettings", "-splash", "-uiplatform"};

    argsman.AddArg("-version", "Print version and exit", ArgsManager::ALLOW_ANY, OptionsCategory::OPTIONS);
#if HAVE_SYSTEM
    argsman.AddArg("-alertnotify=<cmd>", "Execute command when an alert is raised (%s in cmd is replaced by message)", ArgsManager::ALLOW_ANY, OptionsCategory::OPTIONS);
#endif
    argsman.AddArg("-assumevalid=<hex>", strprintf("If this block is in the chain assume that it and its ancestors are valid and potentially skip their script verification (0 to verify all, default: %s, testnet: %s, signet: %s)", defaultChainParams->GetConsensus().defaultAssumeValid.GetHex(), testnetChainParams->GetConsensus().defaultAssumeValid.GetHex(), signetChainParams->GetConsensus().defaultAssumeValid.GetHex()), ArgsManager::ALLOW_ANY, OptionsCategory::OPTIONS);
    argsman.AddArg("-blocksdir=<dir>", "Specify directory to hold blocks subdirectory for *.dat files (default: <datadir>)", ArgsManager::ALLOW_ANY, OptionsCategory::OPTIONS);
    argsman.AddArg("-fastprune", "Use smaller block files and lower minimum prune height for testing purposes", ArgsManager::ALLOW_ANY | ArgsManager::DEBUG_ONLY, OptionsCategory::DEBUG_TEST);
#if HAVE_SYSTEM
    argsman.AddArg("-blocknotify=<cmd>", "Execute command when the best block changes (%s in cmd is replaced by block hash)", ArgsManager::ALLOW_ANY, OptionsCategory::OPTIONS);
#endif
    argsman.AddArg("-blockreconstructionextratxn=<n>", strprintf("Extra transactions to keep in memory for compact block reconstructions (default: %u)", DEFAULT_BLOCK_RECONSTRUCTION_EXTRA_TXN), ArgsManager::ALLOW_ANY, OptionsCategory::OPTIONS);
    argsman.AddArg("-blocksonly", strprintf("Whether to reject transactions from network peers. Automatic broadcast and rebroadcast of any transactions from inbound peers is disabled, unless the peer has the 'forcerelay' permission. RPC transactions are not affected. (default: %u)", DEFAULT_BLOCKSONLY), ArgsManager::ALLOW_ANY, OptionsCategory::OPTIONS);
    argsman.AddArg("-coinstatsindex", strprintf("Maintain coinstats index used by the gettxoutsetinfo RPC (default: %u)", DEFAULT_COINSTATSINDEX), ArgsManager::ALLOW_ANY, OptionsCategory::OPTIONS);
    argsman.AddArg("-digidollarstatsindex", strprintf("Maintain DigiDollar stats index for network-wide DD supply tracking (default: %u)", DEFAULT_DIGIDOLLARSTATSINDEX), ArgsManager::ALLOW_ANY, OptionsCategory::DIGIDOLLAR);
    if (!argsman.GetArgFlags("-conf")) {
        argsman.AddArg("-conf=<file>", strprintf("Specify path to read-only configuration file. Relative paths will be prefixed by datadir location (only useable from command line, not configuration file) (default: %s)", DIGIBYTE_CONF_FILENAME), ArgsManager::ALLOW_ANY, OptionsCategory::OPTIONS);
    }
    if (!argsman.GetArgFlags("-datadir")) {
        argsman.AddArg("-datadir=<dir>", "Specify data directory", ArgsManager::ALLOW_ANY, OptionsCategory::OPTIONS);
    }
    argsman.AddArg("-dbbatchsize", strprintf("Maximum database write batch size in bytes (default: %u)", nDefaultDbBatchSize), ArgsManager::ALLOW_ANY | ArgsManager::DEBUG_ONLY, OptionsCategory::OPTIONS);
    argsman.AddArg("-dbcache=<n>", strprintf("Maximum database cache size <n> MiB (%d to %d, default: %d). In addition, unused mempool memory is shared for this cache (see -maxmempool).", nMinDbCache, nMaxDbCache, nDefaultDbCache), ArgsManager::ALLOW_ANY, OptionsCategory::OPTIONS);
    argsman.AddArg("-includeconf=<file>", "Specify additional configuration file, relative to the -datadir path (only useable from configuration file, not command line)", ArgsManager::ALLOW_ANY, OptionsCategory::OPTIONS);
    argsman.AddArg("-allowignoredconf", strprintf("For backwards compatibility, treat an unused %s file in the datadir as a warning, not an error.", DIGIBYTE_CONF_FILENAME), ArgsManager::ALLOW_ANY, OptionsCategory::OPTIONS);
    argsman.AddArg("-loadblock=<file>", "Imports blocks from external file on startup", ArgsManager::ALLOW_ANY, OptionsCategory::OPTIONS);
    argsman.AddArg("-maxmempool=<n>", strprintf("Keep the transaction memory pool below <n> megabytes (default: %u)", DEFAULT_MAX_MEMPOOL_SIZE_MB), ArgsManager::ALLOW_ANY, OptionsCategory::OPTIONS);
    argsman.AddArg("-maxorphantx=<n>", strprintf("Keep at most <n> unconnectable transactions in memory (default: %u)", DEFAULT_MAX_ORPHAN_TRANSACTIONS), ArgsManager::ALLOW_ANY, OptionsCategory::OPTIONS);
    argsman.AddArg("-mempoolexpiry=<n>", strprintf("Do not keep transactions in the mempool longer than <n> hours (default: %u)", DEFAULT_MEMPOOL_EXPIRY_HOURS), ArgsManager::ALLOW_ANY, OptionsCategory::OPTIONS);
    argsman.AddArg("-minimumchainwork=<hex>", strprintf("Minimum work assumed to exist on a valid chain in hex (default: %s, testnet: %s, signet: %s)", defaultChainParams->GetConsensus().nMinimumChainWork.GetHex(), testnetChainParams->GetConsensus().nMinimumChainWork.GetHex(), signetChainParams->GetConsensus().nMinimumChainWork.GetHex()), ArgsManager::ALLOW_ANY | ArgsManager::DEBUG_ONLY, OptionsCategory::OPTIONS);
    argsman.AddArg("-par=<n>", strprintf("Set the number of script verification threads (0 = auto, up to %d, <0 = leave that many cores free, default: %d)",
        MAX_SCRIPTCHECK_THREADS, DEFAULT_SCRIPTCHECK_THREADS), ArgsManager::ALLOW_ANY, OptionsCategory::OPTIONS);
    argsman.AddArg("-persistmempool", strprintf("Whether to save the mempool on shutdown and load on restart (default: %u)", DEFAULT_PERSIST_MEMPOOL), ArgsManager::ALLOW_ANY, OptionsCategory::OPTIONS);
    argsman.AddArg("-pid=<file>", strprintf("Specify pid file. Relative paths will be prefixed by a net-specific datadir location. (default: %s)", DIGIBYTE_PID_FILENAME), ArgsManager::ALLOW_ANY, OptionsCategory::OPTIONS);
    argsman.AddArg("-prune=<n>", strprintf("Reduce storage requirements by enabling pruning (deleting) of old blocks. This allows the pruneblockchain RPC to be called to delete specific blocks and enables automatic pruning of old blocks if a target size in MiB is provided. This mode is incompatible with -txindex. "
            "Warning: Reverting this setting requires re-downloading the entire blockchain. "
            "(default: 0 = disable pruning blocks, 1 = allow manual pruning via RPC, >=%u = automatically prune block files to stay under the specified target size in MiB)", MIN_DISK_SPACE_FOR_BLOCK_FILES / 1024 / 1024), ArgsManager::ALLOW_ANY, OptionsCategory::OPTIONS);
    argsman.AddArg("-reindex", "If enabled, wipe chain state and block index, and rebuild them from blk*.dat files on disk. Also wipe and rebuild other optional indexes that are active. If an assumeutxo snapshot was loaded, its chainstate will be wiped as well. The snapshot can then be reloaded via RPC.", ArgsManager::ALLOW_ANY, OptionsCategory::OPTIONS);
    argsman.AddArg("-reindex-chainstate", "If enabled, wipe chain state, and rebuild it from blk*.dat files on disk. If an assumeutxo snapshot was loaded, its chainstate will be wiped as well. The snapshot can then be reloaded via RPC.", ArgsManager::ALLOW_ANY, OptionsCategory::OPTIONS);
    argsman.AddArg("-settings=<file>", strprintf("Specify path to dynamic settings data file. Can be disabled with -nosettings. File is written at runtime and not meant to be edited by users (use %s instead for custom settings). Relative paths will be prefixed by datadir location. (default: %s)", DIGIBYTE_CONF_FILENAME, DIGIBYTE_SETTINGS_FILENAME), ArgsManager::ALLOW_ANY, OptionsCategory::OPTIONS);
#if HAVE_SYSTEM
    argsman.AddArg("-startupnotify=<cmd>", "Execute command on startup.", ArgsManager::ALLOW_ANY, OptionsCategory::OPTIONS);
    argsman.AddArg("-shutdownnotify=<cmd>", "Execute command immediately before beginning shutdown. The need for shutdown may be urgent, so be careful not to delay it long (if the command doesn't require interaction with the server, consider having it fork into the background).", ArgsManager::ALLOW_ANY, OptionsCategory::OPTIONS);
#endif
#ifndef WIN32
    argsman.AddArg("-sysperms", "Create new files with system default permissions, instead of umask 077 (only effective with disabled wallet functionality)", ArgsManager::ALLOW_ANY, OptionsCategory::OPTIONS);
#else
    hidden_args.emplace_back("-sysperms");
#endif
    argsman.AddArg("-txindex", strprintf("Maintain a full transaction index, used by the getrawtransaction rpc call (default: %u)", DEFAULT_TXINDEX), ArgsManager::ALLOW_ANY, OptionsCategory::OPTIONS);
    argsman.AddArg("-blockfilterindex=<type>",
                 strprintf("Maintain an index of compact filters by block (default: %s, values: %s).", DEFAULT_BLOCKFILTERINDEX, ListBlockFilterTypes()) +
                 " If <type> is not supplied or if <type> = 1, indexes for all known types are enabled.",
                 ArgsManager::ALLOW_ANY, OptionsCategory::OPTIONS);

    argsman.AddArg("-addnode=<ip>", strprintf("Add a node to connect to and attempt to keep the connection open (see the addnode RPC help for more info). This option can be specified multiple times to add multiple nodes; connections are limited to %u at a time and are counted separately from the -maxconnections limit.", MAX_ADDNODE_CONNECTIONS), ArgsManager::ALLOW_ANY | ArgsManager::NETWORK_ONLY, OptionsCategory::CONNECTION);
    argsman.AddArg("-asmap=<file>", strprintf("Specify asn mapping used for bucketing of the peers (default: %s). Relative paths will be prefixed by the net-specific datadir location.", DEFAULT_ASMAP_FILENAME), ArgsManager::ALLOW_ANY, OptionsCategory::CONNECTION);
    argsman.AddArg("-bantime=<n>", strprintf("Default duration (in seconds) of manually configured bans (default: %u)", DEFAULT_MISBEHAVING_BANTIME), ArgsManager::ALLOW_ANY, OptionsCategory::CONNECTION);
    argsman.AddArg("-bind=<addr>[:<port>][=onion]", strprintf("Bind to given address and always listen on it (default: 0.0.0.0). Use [host]:port notation for IPv6. Append =onion to tag any incoming connections to that address and port as incoming Tor connections (default: 127.0.0.1:%u=onion, testnet: 127.0.0.1:%u=onion, signet: 127.0.0.1:%u=onion, regtest: 127.0.0.1:%u=onion)", defaultBaseParams->OnionServiceTargetPort(), testnetBaseParams->OnionServiceTargetPort(), signetBaseParams->OnionServiceTargetPort(), regtestBaseParams->OnionServiceTargetPort()), ArgsManager::ALLOW_ANY | ArgsManager::NETWORK_ONLY, OptionsCategory::CONNECTION);
    argsman.AddArg("-cjdnsreachable", "If set, then this host is configured for CJDNS (connecting to fc00::/8 addresses would lead us to the CJDNS network, see doc/cjdns.md) (default: 0)", ArgsManager::ALLOW_ANY, OptionsCategory::CONNECTION);
    argsman.AddArg("-connect=<ip>", "Connect only to the specified node; -noconnect disables automatic connections (the rules for this peer are the same as for -addnode). This option can be specified multiple times to connect to multiple nodes.", ArgsManager::ALLOW_ANY | ArgsManager::NETWORK_ONLY, OptionsCategory::CONNECTION);
    argsman.AddArg("-discover", "Discover own IP addresses (default: 1 when listening and no -externalip or -proxy)", ArgsManager::ALLOW_ANY, OptionsCategory::CONNECTION);
    argsman.AddArg("-dns", strprintf("Allow DNS lookups for -addnode, -seednode and -connect (default: %u)", DEFAULT_NAME_LOOKUP), ArgsManager::ALLOW_ANY, OptionsCategory::CONNECTION);
    argsman.AddArg("-dnsseed", strprintf("Query for peer addresses via DNS lookup, if low on addresses (default: %u unless -connect used or -maxconnections=0)", DEFAULT_DNSSEED), ArgsManager::ALLOW_ANY, OptionsCategory::CONNECTION);
    argsman.AddArg("-externalip=<ip>", "Specify your own public address", ArgsManager::ALLOW_ANY, OptionsCategory::CONNECTION);
    argsman.AddArg("-fixedseeds", strprintf("Allow fixed seeds if DNS seeds don't provide peers (default: %u)", DEFAULT_FIXEDSEEDS), ArgsManager::ALLOW_ANY, OptionsCategory::CONNECTION);
    argsman.AddArg("-forcednsseed", strprintf("Always query for peer addresses via DNS lookup (default: %u)", DEFAULT_FORCEDNSSEED), ArgsManager::ALLOW_ANY, OptionsCategory::CONNECTION);
    argsman.AddArg("-listen", strprintf("Accept connections from outside (default: %u if no -proxy, -connect or -maxconnections=0)", DEFAULT_LISTEN), ArgsManager::ALLOW_ANY, OptionsCategory::CONNECTION);
    argsman.AddArg("-listenonion", strprintf("Automatically create Tor onion service (default: %d)", DEFAULT_LISTEN_ONION), ArgsManager::ALLOW_ANY, OptionsCategory::CONNECTION);
    argsman.AddArg("-maxconnections=<n>", strprintf("Maintain at most <n> connections to peers (default: %u). This limit does not apply to connections manually added via -addnode or the addnode RPC, which have a separate limit of %u.", DEFAULT_MAX_PEER_CONNECTIONS, MAX_ADDNODE_CONNECTIONS), ArgsManager::ALLOW_ANY, OptionsCategory::CONNECTION);
    argsman.AddArg("-maxreceivebuffer=<n>", strprintf("Maximum per-connection receive buffer, <n>*1000 bytes (default: %u)", DEFAULT_MAXRECEIVEBUFFER), ArgsManager::ALLOW_ANY, OptionsCategory::CONNECTION);
    argsman.AddArg("-maxsendbuffer=<n>", strprintf("Maximum per-connection memory usage for the send buffer, <n>*1000 bytes (default: %u)", DEFAULT_MAXSENDBUFFER), ArgsManager::ALLOW_ANY, OptionsCategory::CONNECTION);
    argsman.AddArg("-maxtimeadjustment", strprintf("Maximum allowed median peer time offset adjustment. Local perspective of time may be influenced by outbound peers forward or backward by this amount (default: %u seconds).", DEFAULT_MAX_TIME_ADJUSTMENT), ArgsManager::ALLOW_ANY, OptionsCategory::CONNECTION);
    argsman.AddArg("-maxuploadtarget=<n>", strprintf("Tries to keep outbound traffic under the given target per 24h. Limit does not apply to peers with 'download' permission or blocks created within past week. 0 = no limit (default: %s). Optional suffix units [k|K|m|M|g|G|t|T] (default: M). Lowercase is 1000 base while uppercase is 1024 base", DEFAULT_MAX_UPLOAD_TARGET), ArgsManager::ALLOW_ANY, OptionsCategory::CONNECTION);
    argsman.AddArg("-onion=<ip:port>", "Use separate SOCKS5 proxy to reach peers via Tor onion services, set -noonion to disable (default: -proxy)", ArgsManager::ALLOW_ANY, OptionsCategory::CONNECTION);
    argsman.AddArg("-i2psam=<ip:port>", "I2P SAM proxy to reach I2P peers and accept I2P connections (default: none)", ArgsManager::ALLOW_ANY, OptionsCategory::CONNECTION);
    argsman.AddArg("-i2pacceptincoming", strprintf("Whether to accept inbound I2P connections (default: %i). Ignored if -i2psam is not set. Listening for inbound I2P connections is done through the SAM proxy, not by binding to a local address and port.", DEFAULT_I2P_ACCEPT_INCOMING), ArgsManager::ALLOW_ANY, OptionsCategory::CONNECTION);
    argsman.AddArg("-onlynet=<net>", "Make automatic outbound connections only to network <net> (" + Join(GetNetworkNames(), ", ") + "). Inbound and manual connections are not affected by this option. It can be specified multiple times to allow multiple networks.", ArgsManager::ALLOW_ANY, OptionsCategory::CONNECTION);
    argsman.AddArg("-v2transport", strprintf("Support v2 transport (default: %u)", DEFAULT_V2_TRANSPORT), ArgsManager::ALLOW_ANY, OptionsCategory::CONNECTION);
    argsman.AddArg("-peerbloomfilters", strprintf("Support filtering of blocks and transaction with bloom filters (default: %u)", DEFAULT_PEERBLOOMFILTERS), ArgsManager::ALLOW_ANY, OptionsCategory::CONNECTION);
    argsman.AddArg("-peerblockfilters", strprintf("Serve compact block filters to peers per BIP 157 (default: %u)", DEFAULT_PEERBLOCKFILTERS), ArgsManager::ALLOW_ANY, OptionsCategory::CONNECTION);
    argsman.AddArg("-txreconciliation", strprintf("Enable transaction reconciliations per BIP 330 (default: %d)", DEFAULT_TXRECONCILIATION_ENABLE), ArgsManager::ALLOW_ANY | ArgsManager::DEBUG_ONLY, OptionsCategory::CONNECTION);
    // TODO: remove the sentence "Nodes not using ... incoming connections." once the changes from
    // https://github.com/digibyte/digibyte/pull/23542 have become widespread.
    argsman.AddArg("-port=<port>", strprintf("Listen for connections on <port>. Nodes not using the default ports (default: %u, testnet: %u, signet: %u, regtest: %u) are unlikely to get incoming connections. Not relevant for I2P (see doc/i2p.md).", defaultChainParams->GetDefaultPort(), testnetChainParams->GetDefaultPort(), signetChainParams->GetDefaultPort(), regtestChainParams->GetDefaultPort()), ArgsManager::ALLOW_ANY | ArgsManager::NETWORK_ONLY, OptionsCategory::CONNECTION);
    argsman.AddArg("-proxy=<ip:port>", "Connect through SOCKS5 proxy, set -noproxy to disable (default: disabled)", ArgsManager::ALLOW_ANY | ArgsManager::DISALLOW_ELISION, OptionsCategory::CONNECTION);
    argsman.AddArg("-proxyrandomize", strprintf("Randomize credentials for every proxy connection. This enables Tor stream isolation (default: %u)", DEFAULT_PROXYRANDOMIZE), ArgsManager::ALLOW_ANY, OptionsCategory::CONNECTION);
    argsman.AddArg("-seednode=<ip>", "Connect to a node to retrieve peer addresses, and disconnect. This option can be specified multiple times to connect to multiple nodes.", ArgsManager::ALLOW_ANY, OptionsCategory::CONNECTION);
    argsman.AddArg("-networkactive", "Enable all P2P network activity (default: 1). Can be changed by the setnetworkactive RPC command", ArgsManager::ALLOW_ANY, OptionsCategory::CONNECTION);
    argsman.AddArg("-timeout=<n>", strprintf("Specify socket connection timeout in milliseconds. If an initial attempt to connect is unsuccessful after this amount of time, drop it (minimum: 1, default: %d)", DEFAULT_CONNECT_TIMEOUT), ArgsManager::ALLOW_ANY, OptionsCategory::CONNECTION);
    argsman.AddArg("-peertimeout=<n>", strprintf("Specify a p2p connection timeout delay in seconds. After connecting to a peer, wait this amount of time before considering disconnection based on inactivity (minimum: 1, default: %d)", DEFAULT_PEER_CONNECT_TIMEOUT), ArgsManager::ALLOW_ANY | ArgsManager::DEBUG_ONLY, OptionsCategory::CONNECTION);
    argsman.AddArg("-torcontrol=<ip>:<port>", strprintf("Tor control host and port to use if onion listening enabled (default: %s). If no port is specified, the default port of %i will be used.", DEFAULT_TOR_CONTROL, DEFAULT_TOR_CONTROL_PORT), ArgsManager::ALLOW_ANY, OptionsCategory::CONNECTION);
    argsman.AddArg("-torpassword=<pass>", "Tor control port password (default: empty)", ArgsManager::ALLOW_ANY | ArgsManager::SENSITIVE, OptionsCategory::CONNECTION);
#ifdef USE_UPNP
#if USE_UPNP
    argsman.AddArg("-upnp", "Use UPnP to map the listening port (default: 1 when listening and no -proxy)", ArgsManager::ALLOW_ANY, OptionsCategory::CONNECTION);
#else
    argsman.AddArg("-upnp", strprintf("Use UPnP to map the listening port (default: %u)", 0), ArgsManager::ALLOW_ANY, OptionsCategory::CONNECTION);
#endif
#else
    hidden_args.emplace_back("-upnp");
#endif
#ifdef USE_NATPMP
    argsman.AddArg("-natpmp", strprintf("Use NAT-PMP to map the listening port (default: %s)", DEFAULT_NATPMP ? "1 when listening and no -proxy" : "0"), ArgsManager::ALLOW_ANY, OptionsCategory::CONNECTION);
#else
    hidden_args.emplace_back("-natpmp");
#endif // USE_NATPMP
    argsman.AddArg("-whitebind=<[permissions@]addr>", "Bind to the given address and add permission flags to the peers connecting to it. "
        "Use [host]:port notation for IPv6. Allowed permissions: " + Join(NET_PERMISSIONS_DOC, ", ") + ". "
        "Specify multiple permissions separated by commas (default: download,noban,mempool,relay). Can be specified multiple times.", ArgsManager::ALLOW_ANY, OptionsCategory::CONNECTION);

    argsman.AddArg("-whitelist=<[permissions@]IP address or network>", "Add permission flags to the peers connecting from the given IP address (e.g. 1.2.3.4) or "
        "CIDR-notated network (e.g. 1.2.3.0/24). Uses the same permissions as "
        "-whitebind. Can be specified multiple times." , ArgsManager::ALLOW_ANY, OptionsCategory::CONNECTION);

    g_wallet_init_interface.AddWalletOptions(argsman);

#if ENABLE_ZMQ
    argsman.AddArg("-zmqpubhashblock=<address>", "Enable publish hash block in <address>", ArgsManager::ALLOW_ANY, OptionsCategory::ZMQ);
    argsman.AddArg("-zmqpubhashtx=<address>", "Enable publish hash transaction in <address>", ArgsManager::ALLOW_ANY, OptionsCategory::ZMQ);
    argsman.AddArg("-zmqpubrawblock=<address>", "Enable publish raw block in <address>", ArgsManager::ALLOW_ANY, OptionsCategory::ZMQ);
    argsman.AddArg("-zmqpubrawtx=<address>", "Enable publish raw transaction in <address>", ArgsManager::ALLOW_ANY, OptionsCategory::ZMQ);
    argsman.AddArg("-zmqpubsequence=<address>", "Enable publish hash block and tx sequence in <address>", ArgsManager::ALLOW_ANY, OptionsCategory::ZMQ);
    argsman.AddArg("-zmqpubhashblockhwm=<n>", strprintf("Set publish hash block outbound message high water mark (default: %d)", CZMQAbstractNotifier::DEFAULT_ZMQ_SNDHWM), ArgsManager::ALLOW_ANY, OptionsCategory::ZMQ);
    argsman.AddArg("-zmqpubhashtxhwm=<n>", strprintf("Set publish hash transaction outbound message high water mark (default: %d)", CZMQAbstractNotifier::DEFAULT_ZMQ_SNDHWM), ArgsManager::ALLOW_ANY, OptionsCategory::ZMQ);
    argsman.AddArg("-zmqpubrawblockhwm=<n>", strprintf("Set publish raw block outbound message high water mark (default: %d)", CZMQAbstractNotifier::DEFAULT_ZMQ_SNDHWM), ArgsManager::ALLOW_ANY, OptionsCategory::ZMQ);
    argsman.AddArg("-zmqpubrawtxhwm=<n>", strprintf("Set publish raw transaction outbound message high water mark (default: %d)", CZMQAbstractNotifier::DEFAULT_ZMQ_SNDHWM), ArgsManager::ALLOW_ANY, OptionsCategory::ZMQ);
    argsman.AddArg("-zmqpubsequencehwm=<n>", strprintf("Set publish hash sequence message high water mark (default: %d)", CZMQAbstractNotifier::DEFAULT_ZMQ_SNDHWM), ArgsManager::ALLOW_ANY, OptionsCategory::ZMQ);
#else
    hidden_args.emplace_back("-zmqpubhashblock=<address>");
    hidden_args.emplace_back("-zmqpubhashtx=<address>");
    hidden_args.emplace_back("-zmqpubrawblock=<address>");
    hidden_args.emplace_back("-zmqpubrawtx=<address>");
    hidden_args.emplace_back("-zmqpubsequence=<n>");
    hidden_args.emplace_back("-zmqpubhashblockhwm=<n>");
    hidden_args.emplace_back("-zmqpubhashtxhwm=<n>");
    hidden_args.emplace_back("-zmqpubrawblockhwm=<n>");
    hidden_args.emplace_back("-zmqpubrawtxhwm=<n>");
    hidden_args.emplace_back("-zmqpubsequencehwm=<n>");
#endif

    argsman.AddArg("-checkblocks=<n>", strprintf("How many blocks to check at startup (default: %u, 0 = all)", DEFAULT_CHECKBLOCKS), ArgsManager::ALLOW_ANY | ArgsManager::DEBUG_ONLY, OptionsCategory::DEBUG_TEST);
    argsman.AddArg("-checklevel=<n>", strprintf("How thorough the block verification of -checkblocks is: %s (0-4, default: %u)", Join(CHECKLEVEL_DOC, ", "), DEFAULT_CHECKLEVEL), ArgsManager::ALLOW_ANY | ArgsManager::DEBUG_ONLY, OptionsCategory::DEBUG_TEST);
    argsman.AddArg("-checkblockindex", strprintf("Do a consistency check for the block tree, chainstate, and other validation data structures occasionally. (default: %u, regtest: %u)", defaultChainParams->DefaultConsistencyChecks(), regtestChainParams->DefaultConsistencyChecks()), ArgsManager::ALLOW_ANY | ArgsManager::DEBUG_ONLY, OptionsCategory::DEBUG_TEST);
    argsman.AddArg("-checkaddrman=<n>", strprintf("Run addrman consistency checks every <n> operations. Use 0 to disable. (default: %u)", DEFAULT_ADDRMAN_CONSISTENCY_CHECKS), ArgsManager::ALLOW_ANY | ArgsManager::DEBUG_ONLY, OptionsCategory::DEBUG_TEST);
    argsman.AddArg("-checkmempool=<n>", strprintf("Run mempool consistency checks every <n> transactions. Use 0 to disable. (default: %u, regtest: %u)", defaultChainParams->DefaultConsistencyChecks(), regtestChainParams->DefaultConsistencyChecks()), ArgsManager::ALLOW_ANY | ArgsManager::DEBUG_ONLY, OptionsCategory::DEBUG_TEST);
    argsman.AddArg("-checkpoints", strprintf("Enable rejection of any forks from the known historical chain until block %s (default: %u)", defaultChainParams->Checkpoints().GetHeight(), DEFAULT_CHECKPOINTS_ENABLED), ArgsManager::ALLOW_ANY | ArgsManager::DEBUG_ONLY, OptionsCategory::DEBUG_TEST);
    argsman.AddArg("-deprecatedrpc=<method>", "Allows deprecated RPC method(s) to be used", ArgsManager::ALLOW_ANY | ArgsManager::DEBUG_ONLY, OptionsCategory::DEBUG_TEST);
    argsman.AddArg("-stopafterblockimport", strprintf("Stop running after importing blocks from disk (default: %u)", DEFAULT_STOPAFTERBLOCKIMPORT), ArgsManager::ALLOW_ANY | ArgsManager::DEBUG_ONLY, OptionsCategory::DEBUG_TEST);
    argsman.AddArg("-stopatheight", strprintf("Stop running after reaching the given height in the main chain (default: %u)", DEFAULT_STOPATHEIGHT), ArgsManager::ALLOW_ANY | ArgsManager::DEBUG_ONLY, OptionsCategory::DEBUG_TEST);
    argsman.AddArg("-limitancestorcount=<n>", strprintf("Do not accept transactions if number of in-mempool ancestors is <n> or more (default: %u)", DEFAULT_ANCESTOR_LIMIT), ArgsManager::ALLOW_ANY | ArgsManager::DEBUG_ONLY, OptionsCategory::DEBUG_TEST);
    argsman.AddArg("-limitancestorsize=<n>", strprintf("Do not accept transactions whose size with all in-mempool ancestors exceeds <n> kilobytes (default: %u)", DEFAULT_ANCESTOR_SIZE_LIMIT_KVB), ArgsManager::ALLOW_ANY | ArgsManager::DEBUG_ONLY, OptionsCategory::DEBUG_TEST);
    argsman.AddArg("-limitdescendantcount=<n>", strprintf("Do not accept transactions if any ancestor would have <n> or more in-mempool descendants (default: %u)", DEFAULT_DESCENDANT_LIMIT), ArgsManager::ALLOW_ANY | ArgsManager::DEBUG_ONLY, OptionsCategory::DEBUG_TEST);
    argsman.AddArg("-limitdescendantsize=<n>", strprintf("Do not accept transactions if any ancestor would have more than <n> kilobytes of in-mempool descendants (default: %u).", DEFAULT_DESCENDANT_SIZE_LIMIT_KVB), ArgsManager::ALLOW_ANY | ArgsManager::DEBUG_ONLY, OptionsCategory::DEBUG_TEST);
    argsman.AddArg("-addrmantest", "Allows to test address relay on localhost", ArgsManager::ALLOW_ANY | ArgsManager::DEBUG_ONLY, OptionsCategory::DEBUG_TEST);
    argsman.AddArg("-capturemessages", "Capture all P2P messages to disk", ArgsManager::ALLOW_ANY | ArgsManager::DEBUG_ONLY, OptionsCategory::DEBUG_TEST);
    argsman.AddArg("-mocktime=<n>", "Replace actual time with " + UNIX_EPOCH_TIME + " (default: 0)", ArgsManager::ALLOW_ANY | ArgsManager::DEBUG_ONLY, OptionsCategory::DEBUG_TEST);
    argsman.AddArg("-maxsigcachesize=<n>", strprintf("Limit sum of signature cache and script execution cache sizes to <n> MiB (default: %u)", DEFAULT_MAX_SIG_CACHE_BYTES >> 20), ArgsManager::ALLOW_ANY | ArgsManager::DEBUG_ONLY, OptionsCategory::DEBUG_TEST);
    argsman.AddArg("-maxtipage=<n>",
                   strprintf("Maximum tip age in seconds to consider node in initial block download (default: %u)",
                             Ticks<std::chrono::seconds>(DEFAULT_MAX_TIP_AGE)),
                   ArgsManager::ALLOW_ANY | ArgsManager::DEBUG_ONLY, OptionsCategory::DEBUG_TEST);
    argsman.AddArg("-printpriority", strprintf("Log transaction fee rate in " + CURRENCY_UNIT + "/kvB when mining blocks (default: %u)", DEFAULT_PRINTPRIORITY), ArgsManager::ALLOW_ANY | ArgsManager::DEBUG_ONLY, OptionsCategory::DEBUG_TEST);
    argsman.AddArg("-uacomment=<cmt>", "Append comment to the user agent string", ArgsManager::ALLOW_ANY, OptionsCategory::DEBUG_TEST);

    SetupChainParamsBaseOptions(argsman);

    argsman.AddArg("-acceptnonstdtxn", strprintf("Relay and mine \"non-standard\" transactions (test networks only; default: %u)", DEFAULT_ACCEPT_NON_STD_TXN), ArgsManager::ALLOW_ANY | ArgsManager::DEBUG_ONLY, OptionsCategory::NODE_RELAY);
    argsman.AddArg("-incrementalrelayfee=<amt>", strprintf("Fee rate (in %s/kvB) used to define cost of relay, used for mempool limiting and replacement policy. (default: %s)", CURRENCY_UNIT, FormatMoney(DEFAULT_INCREMENTAL_RELAY_FEE)), ArgsManager::ALLOW_ANY | ArgsManager::DEBUG_ONLY, OptionsCategory::NODE_RELAY);
    argsman.AddArg("-dustrelayfee=<amt>", strprintf("Fee rate (in %s/kvB) used to define dust, the value of an output such that it will cost more than its value in fees at this fee rate to spend it. (default: %s)", CURRENCY_UNIT, FormatMoney(DUST_RELAY_TX_FEE)), ArgsManager::ALLOW_ANY | ArgsManager::DEBUG_ONLY, OptionsCategory::NODE_RELAY);
    argsman.AddArg("-acceptstalefeeestimates", strprintf("Read fee estimates even if they are stale (%sdefault: %u) fee estimates are considered stale if they are %s hours old", "regtest only; ", DEFAULT_ACCEPT_STALE_FEE_ESTIMATES, Ticks<std::chrono::hours>(MAX_FILE_AGE)), ArgsManager::ALLOW_ANY | ArgsManager::DEBUG_ONLY, OptionsCategory::DEBUG_TEST);
    argsman.AddArg("-bytespersigop", strprintf("Equivalent bytes per sigop in transactions for relay and mining (default: %u)", DEFAULT_BYTES_PER_SIGOP), ArgsManager::ALLOW_ANY, OptionsCategory::NODE_RELAY);
    argsman.AddArg("-datacarrier", strprintf("Relay and mine data carrier transactions (default: %u)", DEFAULT_ACCEPT_DATACARRIER), ArgsManager::ALLOW_ANY, OptionsCategory::NODE_RELAY);
    argsman.AddArg("-datacarriersize",
                   strprintf("Relay and mine transactions whose data-carrying raw scriptPubKey "
                             "is of this size or less (default: %u)",
                             MAX_OP_RETURN_RELAY),
                   ArgsManager::ALLOW_ANY, OptionsCategory::NODE_RELAY);
    argsman.AddArg("-mempoolfullrbf", strprintf("Accept transaction replace-by-fee without requiring replaceability signaling (default: %u)", DEFAULT_MEMPOOL_FULL_RBF), ArgsManager::ALLOW_ANY, OptionsCategory::NODE_RELAY);
    argsman.AddArg("-permitbaremultisig", strprintf("Relay non-P2SH multisig (default: %u)", DEFAULT_PERMIT_BAREMULTISIG), ArgsManager::ALLOW_ANY,
                   OptionsCategory::NODE_RELAY);
    argsman.AddArg("-minrelaytxfee=<amt>", strprintf("Fees (in %s/kvB) smaller than this are considered zero fee for relaying, mining and transaction creation (default: %s)",
        CURRENCY_UNIT, FormatMoney(DEFAULT_MIN_RELAY_TX_FEE)), ArgsManager::ALLOW_ANY, OptionsCategory::NODE_RELAY);
    argsman.AddArg("-whitelistforcerelay", strprintf("Add 'forcerelay' permission to whitelisted inbound peers with default permissions. This will relay transactions even if the transactions were already in the mempool. (default: %d)", DEFAULT_WHITELISTFORCERELAY), ArgsManager::ALLOW_ANY, OptionsCategory::NODE_RELAY);
    argsman.AddArg("-whitelistrelay", strprintf("Add 'relay' permission to whitelisted inbound peers with default permissions. This will accept relayed transactions even when not relaying transactions (default: %d)", DEFAULT_WHITELISTRELAY), ArgsManager::ALLOW_ANY, OptionsCategory::NODE_RELAY);


    argsman.AddArg("-blockmaxweight=<n>", strprintf("Set maximum BIP141 block weight (default: %d)", DEFAULT_BLOCK_MAX_WEIGHT), ArgsManager::ALLOW_ANY, OptionsCategory::BLOCK_CREATION);
    argsman.AddArg("-blockmintxfee=<amt>", strprintf("Set lowest fee rate (in %s/kvB) for transactions to be included in block creation. (default: %s)", CURRENCY_UNIT, FormatMoney(DEFAULT_BLOCK_MIN_TX_FEE)), ArgsManager::ALLOW_ANY, OptionsCategory::BLOCK_CREATION);
    argsman.AddArg("-blockversion=<n>", "Override block version to test forking scenarios", ArgsManager::ALLOW_ANY | ArgsManager::DEBUG_ONLY, OptionsCategory::BLOCK_CREATION);
    argsman.AddArg("-algo=<algo>", "Mining algorithm: sha256d, scrypt, groestl, skein, qubit, odo", true, OptionsCategory::BLOCK_CREATION);

    argsman.AddArg("-rest", strprintf("Accept public REST requests (default: %u)", DEFAULT_REST_ENABLE), ArgsManager::ALLOW_ANY, OptionsCategory::RPC);
    argsman.AddArg("-rpcallowip=<ip>", "Allow JSON-RPC connections from specified source. Valid values for <ip> are a single IP (e.g. 1.2.3.4), a network/netmask (e.g. 1.2.3.4/255.255.255.0), a network/CIDR (e.g. 1.2.3.4/24), all ipv4 (0.0.0.0/0), or all ipv6 (::/0). This option can be specified multiple times", ArgsManager::ALLOW_ANY, OptionsCategory::RPC);
    argsman.AddArg("-rpcauth=<userpw>", "Username and HMAC-SHA-256 hashed password for JSON-RPC connections. The field <userpw> comes in the format: <USERNAME>:<SALT>$<HASH>. A canonical python script is included in share/rpcauth. The client then connects normally using the rpcuser=<USERNAME>/rpcpassword=<PASSWORD> pair of arguments. This option can be specified multiple times", ArgsManager::ALLOW_ANY | ArgsManager::SENSITIVE, OptionsCategory::RPC);
    argsman.AddArg("-rpcbind=<addr>[:port]", "Bind to given address to listen for JSON-RPC connections. Do not expose the RPC server to untrusted networks such as the public internet! This option is ignored unless -rpcallowip is also passed. Port is optional and overrides -rpcport. Use [host]:port notation for IPv6. This option can be specified multiple times (default: 127.0.0.1 and ::1 i.e., localhost)", ArgsManager::ALLOW_ANY | ArgsManager::NETWORK_ONLY, OptionsCategory::RPC);
    argsman.AddArg("-rpcdoccheck", strprintf("Throw a non-fatal error at runtime if the documentation for an RPC is incorrect (default: %u)", DEFAULT_RPC_DOC_CHECK), ArgsManager::ALLOW_ANY | ArgsManager::DEBUG_ONLY, OptionsCategory::RPC);
    argsman.AddArg("-rpccookiefile=<loc>", "Location of the auth cookie. Relative paths will be prefixed by a net-specific datadir location. (default: data dir)", ArgsManager::ALLOW_ANY, OptionsCategory::RPC);
    argsman.AddArg("-rpcpassword=<pw>", "Password for JSON-RPC connections", ArgsManager::ALLOW_ANY | ArgsManager::SENSITIVE, OptionsCategory::RPC);
    argsman.AddArg("-rpcport=<port>", strprintf("Listen for JSON-RPC connections on <port> (default: %u, testnet: %u, signet: %u, regtest: %u)", defaultBaseParams->RPCPort(), testnetBaseParams->RPCPort(), signetBaseParams->RPCPort(), regtestBaseParams->RPCPort()), ArgsManager::ALLOW_ANY | ArgsManager::NETWORK_ONLY, OptionsCategory::RPC);
    argsman.AddArg("-rpcserialversion", strprintf("Sets the serialization of raw transaction or block hex returned in non-verbose mode, non-segwit(0) (DEPRECATED) or segwit(1) (default: %d)", DEFAULT_RPC_SERIALIZE_VERSION), ArgsManager::ALLOW_ANY, OptionsCategory::RPC);
    argsman.AddArg("-rpcservertimeout=<n>", strprintf("Timeout during HTTP requests (default: %d)", DEFAULT_HTTP_SERVER_TIMEOUT), ArgsManager::ALLOW_ANY | ArgsManager::DEBUG_ONLY, OptionsCategory::RPC);
    argsman.AddArg("-rpcthreads=<n>", strprintf("Set the number of threads to service RPC calls (default: %d)", DEFAULT_HTTP_THREADS), ArgsManager::ALLOW_ANY, OptionsCategory::RPC);
    argsman.AddArg("-rpcuser=<user>", "Username for JSON-RPC connections", ArgsManager::ALLOW_ANY | ArgsManager::SENSITIVE, OptionsCategory::RPC);
    argsman.AddArg("-rpcwhitelist=<whitelist>", "Set a whitelist to filter incoming RPC calls for a specific user. The field <whitelist> comes in the format: <USERNAME>:<rpc 1>,<rpc 2>,...,<rpc n>. If multiple whitelists are set for a given user, they are set-intersected. See -rpcwhitelistdefault documentation for information on default whitelist behavior.", ArgsManager::ALLOW_ANY, OptionsCategory::RPC);
    argsman.AddArg("-rpcwhitelistdefault", "Sets default behavior for rpc whitelisting. Unless rpcwhitelistdefault is set to 0, if any -rpcwhitelist is set, the rpc server acts as if all rpc users are subject to empty-unless-otherwise-specified whitelists. If rpcwhitelistdefault is set to 1 and no -rpcwhitelist is set, rpc server acts as if all rpc users are subject to empty whitelists.", ArgsManager::ALLOW_ANY, OptionsCategory::RPC);
    argsman.AddArg("-rpcworkqueue=<n>", strprintf("Set the depth of the work queue to service RPC calls (default: %d)", DEFAULT_HTTP_WORKQUEUE), ArgsManager::ALLOW_ANY | ArgsManager::DEBUG_ONLY, OptionsCategory::RPC);
    argsman.AddArg("-server", "Accept command line and JSON-RPC commands", ArgsManager::ALLOW_ANY, OptionsCategory::RPC);

    argsman.AddArg("-dandelion", strprintf("Enable Dandelion Transaction Relay Protocol (default: %d)", DEFAULT_DANDELION), ArgsManager::ALLOW_ANY, OptionsCategory::OPTIONS);

    // DigiDollar stablecoin options
    // DigiDollar startup options
    argsman.AddArg("-digidollar", "Enable DigiDollar stablecoin features (activation follows the network's configured block height)", ArgsManager::ALLOW_ANY, OptionsCategory::DIGIDOLLAR);
    argsman.AddArg("-digidollaractivationheight=<n>", "Set the buried DigiDollar deployment height together with the static DD/oracle/MuSig2 height gates, so DigiDollar activates at exactly this height (regtest only)", ArgsManager::ALLOW_ANY | ArgsManager::DEBUG_ONLY, OptionsCategory::DIGIDOLLAR);
    argsman.AddArg("-ddthawdayheight=<n>", "Set the block height at which the DigiDollar Thaw Day rules take effect (regtest only; on any other network this option is a startup error, so keep it under a [regtest] section of the config file). Default: not scheduled.", ArgsManager::ALLOW_ANY | ArgsManager::DEBUG_ONLY, OptionsCategory::DIGIDOLLAR);

    // DigiDollar RPC commands (use 'help <command>' in console for details)
    argsman.AddArg("mintdigidollar", "Mint DigiDollars by locking DGB as collateral (RPC/console)", ArgsManager::ALLOW_ANY, OptionsCategory::DIGIDOLLAR);
    argsman.AddArg("senddigidollar", "Send DigiDollars to another address (RPC/console)", ArgsManager::ALLOW_ANY, OptionsCategory::DIGIDOLLAR);
    argsman.AddArg("redeemdigidollar", "Redeem DigiDollars to unlock DGB collateral (RPC/console)", ArgsManager::ALLOW_ANY, OptionsCategory::DIGIDOLLAR);
    argsman.AddArg("getdigidollarbalance", "Show your DigiDollar balance (RPC/console)", ArgsManager::ALLOW_ANY, OptionsCategory::DIGIDOLLAR);
    argsman.AddArg("listdigidollarpositions", "List all collateral positions and minted DD (RPC/console)", ArgsManager::ALLOW_ANY, OptionsCategory::DIGIDOLLAR);
    argsman.AddArg("listdigidollartxs", "List DigiDollar transaction history (RPC/console)", ArgsManager::ALLOW_ANY, OptionsCategory::DIGIDOLLAR);
    argsman.AddArg("getdigidollaraddress", "Get or create a DigiDollar receive address (RPC/console)", ArgsManager::ALLOW_ANY, OptionsCategory::DIGIDOLLAR);
    argsman.AddArg("validateddaddress", "Validate a DigiDollar address (RPC/console)", ArgsManager::ALLOW_ANY, OptionsCategory::DIGIDOLLAR);
    argsman.AddArg("listdigidollaraddresses", "List all DigiDollar addresses in wallet (RPC/console)", ArgsManager::ALLOW_ANY, OptionsCategory::DIGIDOLLAR);
    argsman.AddArg("importdigidollaraddress", "Validate a DigiDollar address; V1 watch-only import is unsupported/no-op (RPC/console)", ArgsManager::ALLOW_ANY, OptionsCategory::DIGIDOLLAR);
    argsman.AddArg("getdigidollarstats", "Get network-wide DigiDollar statistics (RPC/console)", ArgsManager::ALLOW_ANY, OptionsCategory::DIGIDOLLAR);
    argsman.AddArg("getdigidollardeploymentinfo", "Get DigiDollar activation/deployment status (RPC/console)", ArgsManager::ALLOW_ANY, OptionsCategory::DIGIDOLLAR);
    argsman.AddArg("calculatecollateralrequirement", "Calculate DGB collateral needed for a DD mint (RPC/console)", ArgsManager::ALLOW_ANY, OptionsCategory::DIGIDOLLAR);
    argsman.AddArg("estimatecollateral", "Estimate collateral requirement by tier (RPC/console)", ArgsManager::ALLOW_ANY, OptionsCategory::DIGIDOLLAR);
    argsman.AddArg("getdcamultiplier", "Get the current DCA multiplier for collateral (RPC/console)", ArgsManager::ALLOW_ANY, OptionsCategory::DIGIDOLLAR);
    argsman.AddArg("getredemptioninfo", "Get info about a collateral position for redemption (RPC/console)", ArgsManager::ALLOW_ANY, OptionsCategory::DIGIDOLLAR);
    argsman.AddArg("getprotectionstatus", "Get liquidation protection status (RPC/console)", ArgsManager::ALLOW_ANY, OptionsCategory::DIGIDOLLAR);

    // Oracle RPC commands
    argsman.AddArg("createoraclekey", "Generate an oracle signing key in your wallet (RPC/console)", ArgsManager::ALLOW_ANY, OptionsCategory::ORACLE);
    argsman.AddArg("startoracle", "Start oracle price reporting for your assigned ID (RPC/console)", ArgsManager::ALLOW_ANY, OptionsCategory::ORACLE);
    argsman.AddArg("stoporacle", "Stop oracle price reporting (RPC/console)", ArgsManager::ALLOW_ANY, OptionsCategory::ORACLE);
    argsman.AddArg("getoracleprice", "Get current oracle-reported DGB/USD price (RPC/console)", ArgsManager::ALLOW_ANY, OptionsCategory::ORACLE);
    argsman.AddArg("getalloracleprices", "Get price history from all oracles (RPC/console)", ArgsManager::ALLOW_ANY, OptionsCategory::ORACLE);
    argsman.AddArg("getoracles", "List all oracle nodes and their status (RPC/console)", ArgsManager::ALLOW_ANY, OptionsCategory::ORACLE);
    argsman.AddArg("listoracle", "List oracle configuration and keys (RPC/console)", ArgsManager::ALLOW_ANY, OptionsCategory::ORACLE);
    argsman.AddArg("getoraclepubkey", "Get the public key for an oracle ID (RPC/console)", ArgsManager::ALLOW_ANY, OptionsCategory::ORACLE);
    // sendoracleprice REMOVED — security vulnerability (fake price injection)
    argsman.AddArg("-oraclebundlewaitms=<n>", "When exactly one oracle message/attestation short of quorum, wait up to <n> milliseconds before mining without oracle data (default: 2000, 0 to disable)", ArgsManager::ALLOW_ANY, OptionsCategory::ORACLE);
    argsman.AddArg("-oraclebundlewaitpollms=<n>", "Polling interval in milliseconds while waiting for near-quorum oracle data (default: 200)", ArgsManager::ALLOW_ANY, OptionsCategory::ORACLE);

#if HAVE_DECL_FORK
    argsman.AddArg("-daemon", strprintf("Run in the background as a daemon and accept commands (default: %d)", DEFAULT_DAEMON), ArgsManager::ALLOW_ANY, OptionsCategory::OPTIONS);
    argsman.AddArg("-daemonwait", strprintf("Wait for initialization to be finished before exiting. This implies -daemon (default: %d)", DEFAULT_DAEMONWAIT), ArgsManager::ALLOW_ANY, OptionsCategory::OPTIONS);
#else
    hidden_args.emplace_back("-daemon");
    hidden_args.emplace_back("-daemonwait");
#endif

    // Add the hidden options
    argsman.AddHiddenArgs(hidden_args);
}

static bool fHaveGenesis = false;
static GlobalMutex g_genesis_wait_mutex;
static std::condition_variable g_genesis_wait_cv;

static void BlockNotifyGenesisWait(const CBlockIndex* pBlockIndex)
{
    if (pBlockIndex != nullptr) {
        {
            LOCK(g_genesis_wait_mutex);
            fHaveGenesis = true;
        }
        g_genesis_wait_cv.notify_all();
    }
}

#if HAVE_SYSTEM
static void StartupNotify(const ArgsManager& args)
{
    std::string cmd = args.GetArg("-startupnotify", "");
    if (!cmd.empty()) {
        std::thread t(runCommand, cmd);
        t.detach(); // thread runs free
    }
}
#endif

static bool AppInitServers(NodeContext& node)
{
    const ArgsManager& args = *Assert(node.args);
    RPCServer::OnStarted(&OnRPCStarted);
    RPCServer::OnStopped(&OnRPCStopped);
    if (!InitHTTPServer())
        return false;
    StartRPC();
    node.rpc_interruption_point = RpcInterruptionPoint;
    if (!StartHTTPRPC(&node))
        return false;
    if (args.GetBoolArg("-rest", DEFAULT_REST_ENABLE)) StartREST(&node);
    StartHTTPServer();
    return true;
}

// Parameter interaction based on rules
void InitParameterInteraction(ArgsManager& args)
{
    // when specifying an explicit binding address, you want to listen on it
    // even when -connect or -proxy is specified
    if (args.IsArgSet("-bind")) {
        if (args.SoftSetBoolArg("-listen", true))
            LogPrintf("%s: parameter interaction: -bind set -> setting -listen=1\n", __func__);
    }
    if (args.IsArgSet("-whitebind")) {
        if (args.SoftSetBoolArg("-listen", true))
            LogPrintf("%s: parameter interaction: -whitebind set -> setting -listen=1\n", __func__);
    }

    // DigiByte: -txindex defaults on (DigiDollar needs it), but prune is incompatible with
    // txindex. If the node is pruning and the user did not explicitly choose -txindex, leave
    // txindex off so the pruned node starts cleanly. An explicit "-prune=N -txindex=1" still
    // errors in AppInitParameterInteraction. Any nonzero -prune counts (including invalid
    // negative values, so they reach their own error instead of the txindex conflict);
    // -prune=0 explicitly disables pruning and keeps the txindex default.
    if (args.GetIntArg("-prune", 0) != 0) {
        if (args.SoftSetBoolArg("-txindex", false))
            LogPrintf("%s: parameter interaction: -prune set -> setting -txindex=0\n", __func__);

        // DigiByte: the DigiDollar stats index (default on) syncs from genesis, so on a
        // pruned node its initial sync would demand blocks below the prune point and the
        // generic "index goes beyond pruned data" check would refuse to start. Leave it
        // off on pruned nodes unless the user explicitly asked for it. getdigidollarstats
        // still works via its live UTXO-set fallback; only historical per-height stats
        // queries need the index.
        if (args.SoftSetBoolArg("-digidollarstatsindex", false))
            LogPrintf("%s: parameter interaction: -prune set -> setting -digidollarstatsindex=0\n", __func__);
    }

    if (args.IsArgSet("-connect") || args.GetIntArg("-maxconnections", DEFAULT_MAX_PEER_CONNECTIONS) <= 0) {
        // when only connecting to trusted nodes, do not seed via DNS, or listen by default
        if (args.SoftSetBoolArg("-dnsseed", false))
            LogPrintf("%s: parameter interaction: -connect or -maxconnections=0 set -> setting -dnsseed=0\n", __func__);
        if (args.SoftSetBoolArg("-listen", false))
            LogPrintf("%s: parameter interaction: -connect or -maxconnections=0 set -> setting -listen=0\n", __func__);
    }

    std::string proxy_arg = args.GetArg("-proxy", "");
    if (proxy_arg != "" && proxy_arg != "0") {
        // to protect privacy, do not listen by default if a default proxy server is specified
        if (args.SoftSetBoolArg("-listen", false))
            LogPrintf("%s: parameter interaction: -proxy set -> setting -listen=0\n", __func__);
        // to protect privacy, do not map ports when a proxy is set. The user may still specify -listen=1
        // to listen locally, so don't rely on this happening through -listen below.
        if (args.SoftSetBoolArg("-upnp", false))
            LogPrintf("%s: parameter interaction: -proxy set -> setting -upnp=0\n", __func__);
        if (args.SoftSetBoolArg("-natpmp", false)) {
            LogPrintf("%s: parameter interaction: -proxy set -> setting -natpmp=0\n", __func__);
        }
        // to protect privacy, do not discover addresses by default
        if (args.SoftSetBoolArg("-discover", false))
            LogPrintf("%s: parameter interaction: -proxy set -> setting -discover=0\n", __func__);
    }

    if (!args.GetBoolArg("-listen", DEFAULT_LISTEN)) {
        // do not map ports or try to retrieve public IP when not listening (pointless)
        if (args.SoftSetBoolArg("-upnp", false))
            LogPrintf("%s: parameter interaction: -listen=0 -> setting -upnp=0\n", __func__);
        if (args.SoftSetBoolArg("-natpmp", false)) {
            LogPrintf("%s: parameter interaction: -listen=0 -> setting -natpmp=0\n", __func__);
        }
        if (args.SoftSetBoolArg("-discover", false))
            LogPrintf("%s: parameter interaction: -listen=0 -> setting -discover=0\n", __func__);
        if (args.SoftSetBoolArg("-listenonion", false))
            LogPrintf("%s: parameter interaction: -listen=0 -> setting -listenonion=0\n", __func__);
        if (args.SoftSetBoolArg("-i2pacceptincoming", false)) {
            LogPrintf("%s: parameter interaction: -listen=0 -> setting -i2pacceptincoming=0\n", __func__);
        }
    }

    if (args.IsArgSet("-externalip")) {
        // if an explicit public IP is specified, do not try to find others
        if (args.SoftSetBoolArg("-discover", false))
            LogPrintf("%s: parameter interaction: -externalip set -> setting -discover=0\n", __func__);
    }

    if (args.GetBoolArg("-blocksonly", DEFAULT_BLOCKSONLY)) {
        // disable whitelistrelay in blocksonly mode
        if (args.SoftSetBoolArg("-whitelistrelay", false))
            LogPrintf("%s: parameter interaction: -blocksonly=1 -> setting -whitelistrelay=0\n", __func__);
        // Reduce default mempool size in blocksonly mode to avoid unexpected resource usage
        if (args.SoftSetArg("-maxmempool", ToString(DEFAULT_BLOCKSONLY_MAX_MEMPOOL_SIZE_MB)))
            LogPrintf("%s: parameter interaction: -blocksonly=1 -> setting -maxmempool=%d\n", __func__, DEFAULT_BLOCKSONLY_MAX_MEMPOOL_SIZE_MB);
    }

    // Forcing relay from whitelisted hosts implies we will accept relays from them in the first place.
    if (args.GetBoolArg("-whitelistforcerelay", DEFAULT_WHITELISTFORCERELAY)) {
        if (args.SoftSetBoolArg("-whitelistrelay", true))
            LogPrintf("%s: parameter interaction: -whitelistforcerelay=1 -> setting -whitelistrelay=1\n", __func__);
    }
    if (args.IsArgSet("-onlynet")) {
        const auto onlynets = args.GetArgs("-onlynet");
        bool clearnet_reachable = std::any_of(onlynets.begin(), onlynets.end(), [](const auto& net) {
            const auto n = ParseNetwork(net);
            return n == NET_IPV4 || n == NET_IPV6;
        });
        if (!clearnet_reachable && args.SoftSetBoolArg("-dnsseed", false)) {
            LogPrintf("%s: parameter interaction: -onlynet excludes IPv4 and IPv6 -> setting -dnsseed=0\n", __func__);
        }
    }
}

/**
 * Initialize global loggers.
 *
 * Note that this is called very early in the process lifetime, so you should be
 * careful about what global state you rely on here.
 */
void InitLogging(const ArgsManager& args)
{
    init::SetLoggingOptions(args);
    init::LogPackageVersion();
}

namespace { // Variables internal to initialization process only

int nMaxConnections;
int nUserMaxConnections;
int nFD;
ServiceFlags nLocalServices = ServiceFlags(NODE_NETWORK_LIMITED | NODE_WITNESS);
int64_t peer_connect_timeout;
std::set<BlockFilterType> g_enabled_filter_types;

bool HasDigiDollarDeployment(const CChainParams& chainparams)
{
    // DigiDollar is a buried deployment (BIP90); "disabled" is represented by
    // an activation height of int max (DeploymentEnabled == false).
    return DeploymentEnabled(chainparams.GetConsensus(), Consensus::DEPLOYMENT_DIGIDOLLAR);
}

bool IsRegtestDigiDollarExplicitlyRequested(const ArgsManager& args)
{
    return args.IsArgSet("-digidollar") || args.IsArgSet("-digidollaractivationheight");
}

} // namespace

bool IsDigiDollarTxIndexRequired(const CChainParams& chainparams, const ArgsManager& args)
{
    if (!HasDigiDollarDeployment(chainparams)) return false;

    // Pruned nodes do not maintain a transaction index (prune is incompatible with
    // txindex). DigiDollar validation on a pruned node resolves the amount/lock of a
    // spent DD output by reading the creating transaction from the retained block at the
    // coin's height (node::GetTransaction's block-db path) instead of the txindex, and
    // the DigiDollar-era block window is kept by the "digidollar" prune lock. So a pruned
    // node does not require txindex.
    if (args.GetIntArg("-prune", 0) > 0) return false;

    switch (chainparams.GetChainType()) {
    case ChainType::MAIN:
    case ChainType::TESTNET:
        return true;
    case ChainType::REGTEST:
        return IsRegtestDigiDollarExplicitlyRequested(args);
    case ChainType::SIGNET:
        return false;
    }

    return false;
}

std::string GetDigiDollarTxIndexRequirementError(const CChainParams& chainparams)
{
    std::string section_name;
    switch (chainparams.GetChainType()) {
    case ChainType::MAIN:
        section_name = "[main]";
        break;
    case ChainType::TESTNET:
        section_name = "[test]";
        break;
    case ChainType::REGTEST:
        section_name = "[regtest]";
        break;
    case ChainType::SIGNET:
        section_name = "[signet]";
        break;
    }

    if (!section_name.empty()) {
        return strprintf("DigiDollar requires -txindex=1. Add txindex=1 to your digibyte.conf under the %s section and restart.",
                         section_name);
    }
    return "DigiDollar requires -txindex=1. Add txindex=1 to your digibyte.conf and restart.";
}

[[noreturn]] static void new_handler_terminate()
{
    // Rather than throwing std::bad-alloc if allocation fails, terminate
    // immediately to (try to) avoid chain corruption.
    // Since LogPrintf may itself allocate memory, set the handler directly
    // to terminate first.
    std::set_new_handler(std::terminate);
    LogPrintf("Error: Out of memory. Terminating.\n");

    // The log was successful, terminate now.
    std::terminate();
};

bool AppInitBasicSetup(const ArgsManager& args, std::atomic<int>& exit_status)
{
    // ********************************************************* Step 1: setup
#ifdef _MSC_VER
    // Turn off Microsoft heap dump noise
    _CrtSetReportMode(_CRT_WARN, _CRTDBG_MODE_FILE);
    _CrtSetReportFile(_CRT_WARN, CreateFileA("NUL", GENERIC_WRITE, 0, nullptr, OPEN_EXISTING, 0, 0));
    // Disable confusing "helpful" text message on abort, Ctrl-C
    _set_abort_behavior(0, _WRITE_ABORT_MSG | _CALL_REPORTFAULT);
#endif
#ifdef WIN32
    // Enable heap terminate-on-corruption
    HeapSetInformation(nullptr, HeapEnableTerminationOnCorruption, nullptr, 0);
#endif
    // if (!InitShutdownState(exit_status)) {  // Not needed in v26.2
    //     return InitError(Untranslated("Initializing wait-for-shutdown state failed."));
    // }

    if (!SetupNetworking()) {
        return InitError(Untranslated("Initializing networking failed."));
    }

#ifndef WIN32
    if (!args.GetBoolArg("-sysperms", false)) {
        umask(077);
    }
    // Clean shutdown on SIGTERM
    registerSignalHandler(SIGTERM, HandleSIGTERM);
    registerSignalHandler(SIGINT, HandleSIGTERM);

    // Reopen debug.log on SIGHUP
    registerSignalHandler(SIGHUP, HandleSIGHUP);

    // Ignore SIGPIPE, otherwise it will bring the daemon down if the client closes unexpectedly
    signal(SIGPIPE, SIG_IGN);
#else
    SetConsoleCtrlHandler(consoleCtrlHandler, true);
#endif

    std::set_new_handler(new_handler_terminate);

    return true;
}

bool AppInitParameterInteraction(const ArgsManager& args)
{
    const CChainParams& chainparams = Params();
    // ********************************************************* Step 2: parameter interactions

    // also see: InitParameterInteraction()

    // Error if network-specific options (-addnode, -connect, etc) are
    // specified in default section of config file, but not overridden
    // on the command line or in this chain's section of the config file.
    ChainType chain = args.GetChainType();
    if (chain == ChainType::SIGNET) {
        LogPrintf("Signet derived magic (message start): %s\n", HexStr(chainparams.MessageStart()));
    }
    bilingual_str errors;
    for (const auto& arg : args.GetUnsuitableSectionOnlyArgs()) {
        errors += strprintf(_("Config setting for %s only applied on %s network when in [%s] section.") + Untranslated("\n"), arg, ChainTypeToString(chain), ChainTypeToString(chain));
    }

    if (!errors.empty()) {
        return InitError(errors);
    }

    // Warn if unrecognized section name are present in the config file.
    bilingual_str warnings;
    for (const auto& section : args.GetUnrecognizedSections()) {
        warnings += strprintf(Untranslated("%s:%i ") + _("Section [%s] is not recognized.") + Untranslated("\n"), section.m_file, section.m_line, section.m_name);
    }

    if (!warnings.empty()) {
        InitWarning(warnings);
    }

    if (!fs::is_directory(args.GetBlocksDirPath())) {
        return InitError(strprintf(_("Specified blocks directory \"%s\" does not exist."), args.GetArg("-blocksdir", "")));
    }

    // parse and validate enabled filter types
    std::string blockfilterindex_value = args.GetArg("-blockfilterindex", DEFAULT_BLOCKFILTERINDEX);
    if (blockfilterindex_value == "" || blockfilterindex_value == "1") {
        g_enabled_filter_types = AllBlockFilterTypes();
    } else if (blockfilterindex_value != "0") {
        const std::vector<std::string> names = args.GetArgs("-blockfilterindex");
        for (const auto& name : names) {
            BlockFilterType filter_type;
            if (!BlockFilterTypeByName(name, filter_type)) {
                return InitError(strprintf(_("Unknown -blockfilterindex value %s."), name));
            }
            g_enabled_filter_types.insert(filter_type);
        }
    }

    // Signal NODE_P2P_V2 if BIP324 v2 transport is enabled.
    if (args.GetBoolArg("-v2transport", DEFAULT_V2_TRANSPORT)) {
        nLocalServices = ServiceFlags(nLocalServices | NODE_P2P_V2);
    }

    // Signal NODE_COMPACT_FILTERS if peerblockfilters and basic filters index are both enabled.
    if (args.GetBoolArg("-peerblockfilters", DEFAULT_PEERBLOCKFILTERS)) {
        if (g_enabled_filter_types.count(BlockFilterType::BASIC) != 1) {
            return InitError(_("Cannot set -peerblockfilters without -blockfilterindex."));
        }

        nLocalServices = ServiceFlags(nLocalServices | NODE_COMPACT_FILTERS);
    }

    // if using block pruning, then disallow txindex
    if (args.GetIntArg("-prune", 0)) {
        if (args.GetBoolArg("-txindex", DEFAULT_TXINDEX))
            return InitError(_("Prune mode is incompatible with -txindex."));
        if (args.GetBoolArg("-reindex-chainstate", false)) {
            return InitError(_("Prune mode is incompatible with -reindex-chainstate. Use full -reindex instead."));
        }
    }

    // If -forcednsseed is set to true, ensure -dnsseed has not been set to false
    if (args.GetBoolArg("-forcednsseed", DEFAULT_FORCEDNSSEED) && !args.GetBoolArg("-dnsseed", DEFAULT_DNSSEED)){
        return InitError(_("Cannot set -forcednsseed to true when setting -dnsseed to false."));
    }

    // -bind and -whitebind can't be set when not listening
    size_t nUserBind = args.GetArgs("-bind").size() + args.GetArgs("-whitebind").size();
    if (nUserBind != 0 && !args.GetBoolArg("-listen", DEFAULT_LISTEN)) {
        return InitError(Untranslated("Cannot set -bind or -whitebind together with -listen=0"));
    }

    // if listen=0, then disallow listenonion=1
    if (!args.GetBoolArg("-listen", DEFAULT_LISTEN) && args.GetBoolArg("-listenonion", DEFAULT_LISTEN_ONION)) {
        return InitError(Untranslated("Cannot set -listen=0 together with -listenonion=1"));
    }

    // Make sure enough file descriptors are available
    int nBind = std::max(nUserBind, size_t(1));
    nUserMaxConnections = args.GetIntArg("-maxconnections", DEFAULT_MAX_PEER_CONNECTIONS);
    nMaxConnections = std::max(nUserMaxConnections, 0);

    const int reserved_fds = MIN_CORE_FILEDESCRIPTORS + MAX_ADDNODE_CONNECTIONS + nBind + NUM_FDS_MESSAGE_CAPTURE;
    const int64_t requested_fds = int64_t{nMaxConnections} + reserved_fds;
    nFD = RaiseFileDescriptorLimit(static_cast<int>(std::min(requested_fds, int64_t{std::numeric_limits<int>::max()})));

#ifdef USE_POLL
    int fd_max = nFD;
#else
    int fd_max = FD_SETSIZE;
#endif
    // Leave the full reserve available before assigning descriptors to automatic connections.
    const int available_fds = std::min(nFD, fd_max);
    if (available_fds < reserved_fds)
        return InitError(_("Not enough file descriptors available."));
    nMaxConnections = std::min(nMaxConnections, available_fds - reserved_fds);

    if (nMaxConnections < nUserMaxConnections)
        InitWarning(strprintf(_("Reducing -maxconnections from %d to %d, because of system limitations."), nUserMaxConnections, nMaxConnections));

    // ********************************************************* Step 3: parameter-to-internal-flags
    auto result = init::SetLoggingCategories(args);
    if (!result) return InitError(util::ErrorString(result));
    result = init::SetLoggingLevel(args);
    if (!result) return InitError(util::ErrorString(result));

    nConnectTimeout = args.GetIntArg("-timeout", DEFAULT_CONNECT_TIMEOUT);
    // In v26.2, these are handled in kernel/chainstate options
    // fCheckBlockIndex = args.GetBoolArg("-checkblockindex", chainparams.DefaultConsistencyChecks());
    // fCheckpointsEnabled = args.GetBoolArg("-checkpoints", DEFAULT_CHECKPOINTS_ENABLED);

    // hashAssumeValid = uint256S(args.GetArg("-assumevalid", chainparams.GetConsensus().defaultAssumeValid.GetHex()));
    // if (!hashAssumeValid.IsNull())
    //     LogPrintf("Assuming ancestors of block %s have valid signatures.\n", hashAssumeValid.GetHex());
    // else
    //     LogPrintf("Validating signatures for all blocks.\n");

    // if (args.IsArgSet("-minimumchainwork")) {
    //     const std::string minChainWorkStr = args.GetArg("-minimumchainwork", "");
    //     if (!IsHexNumber(minChainWorkStr)) {
    //         return InitError(strprintf(Untranslated("Invalid non-hex (%s) minimum chain work value specified"), minChainWorkStr));
    //     }
    //     nMinimumChainWork = UintToArith256(uint256S(minChainWorkStr));
    // } else {
    //     nMinimumChainWork = UintToArith256(chainparams.GetConsensus().nMinimumChainWork);
    // }
    // LogPrintf("Setting nMinimumChainWork=%s\n", nMinimumChainWork.GetHex());
    // if (nMinimumChainWork < UintToArith256(chainparams.GetConsensus().nMinimumChainWork)) {
    //     LogPrintf("Warning: nMinimumChainWork set below default value of %s\n", chainparams.GetConsensus().nMinimumChainWork.GetHex());
    // }

    // mempool limits
    int64_t nMempoolSizeMax = args.GetIntArg("-maxmempool", DEFAULT_MAX_MEMPOOL_SIZE_MB) * 1000000;
    int64_t nMempoolSizeMin = args.GetIntArg("-limitdescendantsize", DEFAULT_DESCENDANT_SIZE_LIMIT_KVB) * 1000 * 40;
    if (nMempoolSizeMax < 0 || nMempoolSizeMax < nMempoolSizeMin)
        return InitError(strprintf(_("-maxmempool must be at least %d MB"), std::ceil(nMempoolSizeMin / 1000000.0)));
    // incremental relay fee sets the minimum feerate increase necessary for BIP 125 replacement in the mempool
    // and the amount the mempool min fee increases above the feerate of txs evicted due to mempool limiting.
    if (args.IsArgSet("-incrementalrelayfee")) {
        auto parsed = ParseMoney(args.GetArg("-incrementalrelayfee", ""));
        if (!parsed)
            return InitError(AmountErrMsg("incrementalrelayfee", args.GetArg("-incrementalrelayfee", "")));
        // incrementalRelayFee = CFeeRate(*parsed);  // This global is not used in v26.2
    }

    // block pruning; get the amount of disk space (in MiB) to allot for block & undo files
    int64_t nPruneArg = args.GetIntArg("-prune", 0);
    if (nPruneArg < 0) {
        return InitError(_("Prune cannot be configured with a negative value."));
    }
    uint64_t nPruneTarget = (uint64_t) nPruneArg * 1024 * 1024;
    if (nPruneArg == 1) {  // manual pruning: -prune=1
        LogPrintf("Block pruning enabled.  Use RPC call pruneblockchain(height) to manually prune block and undo files.\n");
        nPruneTarget = std::numeric_limits<uint64_t>::max();
        // fPruneMode is set via BlockManager options in v26.2
    } else if (nPruneTarget) {
        if (nPruneTarget < MIN_DISK_SPACE_FOR_BLOCK_FILES) {
            return InitError(strprintf(_("Prune configured below the minimum of %d MiB.  Please use a higher number."), MIN_DISK_SPACE_FOR_BLOCK_FILES / 1024 / 1024));
        }
        LogPrintf("Prune configured to target %u MiB on disk for block and undo files.\n", nPruneTarget / 1024 / 1024);
        // fPruneMode is set via BlockManager options in v26.2
    }

    nConnectTimeout = args.GetIntArg("-timeout", DEFAULT_CONNECT_TIMEOUT);
    if (nConnectTimeout <= 0) {
        nConnectTimeout = DEFAULT_CONNECT_TIMEOUT;
    }

    peer_connect_timeout = args.GetIntArg("-peertimeout", DEFAULT_PEER_CONNECT_TIMEOUT);
    if (peer_connect_timeout <= 0) {
        return InitError(Untranslated("peertimeout must be a positive integer."));
    }

    // Sanity check argument for min fee for including tx in block
    // TODO: Harmonize which arguments need sanity checking and where that happens
    if (args.IsArgSet("-blockmintxfee")) {
        if (!ParseMoney(args.GetArg("-blockmintxfee", ""))) {
            return InitError(AmountErrMsg("blockmintxfee", args.GetArg("-blockmintxfee", "")));
        }
    }

    nBytesPerSigOp = args.GetIntArg("-bytespersigop", nBytesPerSigOp);

    // Algo
    std::string strAlgo = args.GetArg("-algo", "scrypt");
    miningAlgo = GetAlgoByName(strAlgo, ALGO_SCRYPT);

    LogPrintf("Selected Algo: %s\n", strAlgo);

    if (!g_wallet_init_interface.ParameterInteraction()) return false;

    // Option to startup with mocktime set (used for regression testing):
    SetMockTime(args.GetIntArg("-mocktime", 0)); // SetMockTime(0) is a no-op

    if (args.GetBoolArg("-peerbloomfilters", DEFAULT_PEERBLOOMFILTERS))
        nLocalServices = ServiceFlags(nLocalServices | NODE_BLOOM);

    if (args.GetIntArg("-rpcserialversion", DEFAULT_RPC_SERIALIZE_VERSION) < 0)
        return InitError(Untranslated("rpcserialversion must be non-negative."));

    if (args.GetIntArg("-rpcserialversion", DEFAULT_RPC_SERIALIZE_VERSION) > 1)
        return InitError(Untranslated("Unknown rpcserialversion requested."));

    if (args.GetIntArg("-rpcserialversion", DEFAULT_RPC_SERIALIZE_VERSION) == 0 && !IsDeprecatedRPCEnabled("serialversion")) {
        return InitError(Untranslated("-rpcserialversion=0 is deprecated and will be removed in the future. Specify -deprecatedrpc=serialversion to allow anyway."));
    }

    // Also report errors from parsing before daemonization
    {
        kernel::Notifications notifications{};
        ChainstateManager::Options chainman_opts_dummy{
            .chainparams = chainparams,
            .datadir = args.GetDataDirNet(),
            .notifications = notifications,
        };
        auto chainman_result{ApplyArgsManOptions(args, chainman_opts_dummy)};
        if (!chainman_result) {
            return InitError(util::ErrorString(chainman_result));
        }
        node::BlockManager::Options blockman_opts_dummy{
            .chainparams = chainman_opts_dummy.chainparams,
            .prune_target = nPruneTarget,
            .blocks_dir = args.GetBlocksDirPath(),
            .notifications = chainman_opts_dummy.notifications,
        };
        auto blockman_result{ApplyArgsManOptions(args, blockman_opts_dummy)};
        if (!blockman_result) {
            return InitError(util::ErrorString(blockman_result));
        }
    }

    return true;
}

static bool LockDataDirectory(bool probeOnly)
{
    // Make sure only a single DigiByte process is using the data directory.
    const fs::path& datadir = gArgs.GetDataDirNet();
    if (!DirIsWritable(datadir)) {
        return InitError(strprintf(_("Cannot write to data directory '%s'; check permissions."), fs::PathToString(datadir)));
    }
    if (!LockDirectory(datadir, ".lock", probeOnly)) {
        return InitError(strprintf(_("Cannot obtain a lock on data directory %s. %s is probably already running."), fs::PathToString(datadir), CLIENT_NAME));
    }
    return true;
}

bool AppInitSanityChecks(const kernel::Context& kernel)
{
    // ********************************************************* Step 4: sanity checks
    auto result{kernel::SanityChecks(kernel)};
    if (!result) {
        InitError(util::ErrorString(result));
        return InitError(strprintf(_("Initialization sanity check failed. %s is shutting down."), CLIENT_NAME));
    }

    // Probe the data directory lock to give an early error message, if possible
    // We cannot hold the data directory lock here, as the forking for daemon() hasn't yet happened,
    // and a fork will cause weird behavior to it.
    return LockDataDirectory(true);
}

bool AppInitLockDataDirectory()
{
    // After daemonization get the data directory lock again and hold on to it until exit
    // This creates a slight window for a race condition to happen, however this condition is harmless: it
    // will at most make us exit without printing a message to console.
    if (!LockDataDirectory(false)) {
        // Detailed error printed inside LockDataDirectory
        return false;
    }
    return true;
}

bool AppInitInterfaces(NodeContext& node)
{
    node.chain = node.init->makeChain();
    return true;
}

bool AppInitMain(NodeContext& node, interfaces::BlockAndHeaderTipInfo* tip_info)
{
    const ArgsManager& args = *Assert(node.args);
    const CChainParams& chainparams = Params();

    auto opt_max_upload = ParseByteUnits(args.GetArg("-maxuploadtarget", DEFAULT_MAX_UPLOAD_TARGET), ByteUnit::M);
    if (!opt_max_upload) {
        return InitError(strprintf(_("Unable to parse -maxuploadtarget: '%s'"), args.GetArg("-maxuploadtarget", "")));
    }

    if (IsDigiDollarTxIndexRequired(chainparams, args) && !args.GetBoolArg("-txindex", DEFAULT_TXINDEX)) {
        return InitError(Untranslated(GetDigiDollarTxIndexRequirementError(chainparams)));
    }

    // ********************************************************* Step 4a: application initialization
    if (!CreatePidFile(args)) {
        // Detailed error printed inside CreatePidFile().
        return false;
    }
    if (!init::StartLogging(args)) {
        // Detailed error printed inside StartLogging().
        return false;
    }

    LogPrintf("Using at most %i automatic connections (%i file descriptors available)\n", nMaxConnections, nFD);

    // Warn about relative -datadir path.
    if (args.IsArgSet("-datadir") && !args.GetPathArg("-datadir").is_absolute()) {
        LogPrintf("Warning: relative datadir option '%s' specified, which will be interpreted relative to the "
                  "current working directory '%s'. This is fragile, because if digibyte is started in the future "
                  "from a different location, it will be unable to locate the current data files. There could "
                  "also be data loss if digibyte is started while in a temporary directory.\n",
                  args.GetArg("-datadir", ""), fs::PathToString(fs::current_path()));
    }

    ValidationCacheSizes validation_cache_sizes{};
    ApplyArgsManOptions(args, validation_cache_sizes);
    if (!InitSignatureCache(validation_cache_sizes.signature_cache_bytes)
        || !InitScriptExecutionCache(validation_cache_sizes.script_execution_cache_bytes))
    {
        return InitError(strprintf(_("Unable to allocate memory for -maxsigcachesize: '%s' MiB"), args.GetIntArg("-maxsigcachesize", DEFAULT_MAX_SIG_CACHE_BYTES >> 20)));
    }

    int script_threads = args.GetIntArg("-par", DEFAULT_SCRIPTCHECK_THREADS);
    if (script_threads <= 0) {
        // -par=0 means autodetect (number of cores - 1 script threads)
        // -par=-n means "leave n cores free" (number of cores - n - 1 script threads)
        script_threads += GetNumCores();
    }

    // Subtract 1 because the main thread counts towards the par threads
    script_threads = std::max(script_threads - 1, 0);

    // Number of script-checking threads <= MAX_SCRIPTCHECK_THREADS
    script_threads = std::min(script_threads, MAX_SCRIPTCHECK_THREADS);

    LogPrintf("Script verification uses %d additional threads\n", script_threads);
    if (script_threads >= 1) {
        StartScriptCheckWorkerThreads(script_threads);
    }

    assert(!node.scheduler);
    node.scheduler = std::make_unique<CScheduler>();

    // Start the lightweight task scheduler thread
    node.scheduler->m_service_thread = std::thread(util::TraceThread, "scheduler", [&] { node.scheduler->serviceQueue(); });

    // Gather some entropy once per minute.
    node.scheduler->scheduleEvery([]{
        RandAddPeriodic();
    }, std::chrono::minutes{1});

    // Check disk space every 5 minutes to avoid db corruption.
    node.scheduler->scheduleEvery([&args]{
        constexpr uint64_t min_disk_space = 50 << 20; // 50 MB
        if (!CheckDiskSpace(args.GetBlocksDirPath(), min_disk_space)) {
            LogPrintf("Shutting down due to lack of disk space!\n");
            StartShutdown();
        }
    }, std::chrono::minutes{5});

    GetMainSignals().RegisterBackgroundSignalScheduler(*node.scheduler);

    // Create client interfaces for wallets that are supposed to be loaded
    // according to -wallet and -disablewallet options. This only constructs
    // the interfaces, it doesn't load wallet data. Wallets actually get loaded
    // when load() and start() interface methods are called below.
    g_wallet_init_interface.Construct(node);
    uiInterface.InitWallet();

    /* Register RPC commands regardless of -server setting so they will be
     * available in the GUI RPC console even if external calls are disabled.
     */
    RegisterAllCoreRPCCommands(tableRPC);
    for (const auto& client : node.chain_clients) {
        client->registerRpcs();
    }
#if ENABLE_ZMQ
    RegisterZMQRPCCommands(tableRPC);
#endif

    /* Start the RPC server already.  It will be started in "warmup" mode
     * and not really process calls already (but it will signify connections
     * that the server is there and will be ready later).  Warmup mode will
     * be disabled when initialisation is finished.
     */
    if (args.GetBoolArg("-server", false)) {
        uiInterface.InitMessage_connect(SetRPCWarmupStatus);
        if (!AppInitServers(node))
            return InitError(_("Unable to start HTTP server. See debug log for details."));
    }

    // ********************************************************* Step 5: verify wallet database integrity
    for (const auto& client : node.chain_clients) {
        if (!client->verify()) {
            return false;
        }
    }

    // ********************************************************* Step 6: network initialization
    // Note that we absolutely cannot open any actual connections
    // until the very end ("start node") as the UTXO/block state
    // is not yet setup and may end up being set up twice if we
    // need to reindex later.

    fListen = args.GetBoolArg("-listen", DEFAULT_LISTEN);
    fDiscover = args.GetBoolArg("-discover", true);

    PeerManager::Options peerman_opts{};
    ApplyArgsManOptions(args, peerman_opts);

    {

        // Read asmap file if configured
        std::vector<bool> asmap;
        if (args.IsArgSet("-asmap")) {
            fs::path asmap_path = args.GetPathArg("-asmap", DEFAULT_ASMAP_FILENAME);
            if (!asmap_path.is_absolute()) {
                asmap_path = args.GetDataDirNet() / asmap_path;
            }
            if (!fs::exists(asmap_path)) {
                InitError(strprintf(_("Could not find asmap file %s"), fs::quoted(fs::PathToString(asmap_path))));
                return false;
            }
            asmap = DecodeAsmap(asmap_path);
            if (asmap.size() == 0) {
                InitError(strprintf(_("Could not parse asmap file %s"), fs::quoted(fs::PathToString(asmap_path))));
                return false;
            }
            const uint256 asmap_version = (HashWriter{} << asmap).GetHash();
            LogPrintf("Using asmap version %s for IP bucketing\n", asmap_version.ToString());
        } else {
            LogPrintf("Using /16 prefix for IP bucketing\n");
        }

        // Initialize netgroup manager
        assert(!node.netgroupman);
        node.netgroupman = std::make_unique<NetGroupManager>(std::move(asmap));

        // Initialize addrman
        assert(!node.addrman);
        uiInterface.InitMessage(_("Loading P2P addresses…").translated);
        auto addrman{LoadAddrman(*node.netgroupman, args)};
        if (!addrman) return InitError(util::ErrorString(addrman));
        node.addrman = std::move(*addrman);
    }

    assert(!node.banman);
    node.banman = std::make_unique<BanMan>(args.GetDataDirNet() / "banlist", &uiInterface, args.GetIntArg("-bantime", DEFAULT_MISBEHAVING_BANTIME));
    assert(!node.connman);
    node.connman = std::make_unique<CConnman>(GetRand<uint64_t>(),
                                              GetRand<uint64_t>(),
                                              *node.addrman, *node.netgroupman, chainparams, args.GetBoolArg("-networkactive", true));

    assert(!node.fee_estimator);
    // Don't initialize fee estimation with old data if we don't relay transactions,
    // as they would never get updated.
    if (!peerman_opts.ignore_incoming_txs) {
        bool read_stale_estimates = args.GetBoolArg("-acceptstalefeeestimates", DEFAULT_ACCEPT_STALE_FEE_ESTIMATES);
        if (read_stale_estimates && (chainparams.GetChainType() != ChainType::REGTEST)) {
            return InitError(strprintf(_("acceptstalefeeestimates is not supported on %s chain."), chainparams.GetChainTypeString()));
        }
        node.fee_estimator = std::make_unique<CBlockPolicyEstimator>(FeeestPath(args), read_stale_estimates);

        // Flush estimates to disk periodically
        CBlockPolicyEstimator* fee_estimator = node.fee_estimator.get();
        node.scheduler->scheduleEvery([fee_estimator] { fee_estimator->FlushFeeEstimates(); }, FEE_FLUSH_INTERVAL);
    }

    // Mempool initialization moved to later in the function (v26.2 style)

    // Check port numbers
    for (const std::string port_option : {
        "-port",
        "-rpcport",
    }) {
        if (args.IsArgSet(port_option)) {
            const std::string port = args.GetArg(port_option, "");
            uint16_t n;
            if (!ParseUInt16(port, &n) || n == 0) {
                return InitError(InvalidPortErrMsg(port_option, port));
            }
        }
    }

    for (const std::string port_option : {
        "-i2psam",
        "-onion",
        "-proxy",
        "-rpcbind",
        "-torcontrol",
        "-whitebind",
    }) {
        for (const std::string& socket_addr : args.GetArgs(port_option)) {
            std::string host_out;
            uint16_t port_out{0};
            if (!SplitHostPort(socket_addr, port_out, host_out)) {
                return InitError(InvalidPortErrMsg(port_option, socket_addr));
            }
        }
    }

    // ZMQ options support both TCP (tcp://host:port) and Unix domain sockets
    // (ipc:///path/to/socket). Skip port validation for ipc:// addresses since
    // they use filesystem paths, not host:port format. This restores support
    // that was inadvertently broken when port validation was added.
    // See: https://github.com/DigiByte-Core/digibyte/issues/340
    for (const std::string zmq_option : {
        "-zmqpubhashblock",
        "-zmqpubhashtx",
        "-zmqpubrawblock",
        "-zmqpubrawtx",
        "-zmqpubsequence",
    }) {
        for (const std::string& socket_addr : args.GetArgs(zmq_option)) {
            // libzmq natively supports ipc:// for Unix domain sockets
            if (socket_addr.substr(0, 6) == "ipc://") {
                continue;
            }
            std::string host_out;
            uint16_t port_out{0};
            if (!SplitHostPort(socket_addr, port_out, host_out)) {
                return InitError(InvalidPortErrMsg(zmq_option, socket_addr));
            }
        }
    }

    for (const std::string& socket_addr : args.GetArgs("-bind")) {
        std::string host_out;
        uint16_t port_out{0};
        std::string bind_socket_addr = socket_addr.substr(0, socket_addr.rfind('='));
        if (!SplitHostPort(bind_socket_addr, port_out, host_out)) {
            return InitError(InvalidPortErrMsg("-bind", socket_addr));
        }
    }

    // sanitize comments per BIP-0014, format user agent and check total size
    std::vector<std::string> uacomments;
    for (const std::string& cmt : args.GetArgs("-uacomment")) {
        if (cmt != SanitizeString(cmt, SAFE_CHARS_UA_COMMENT))
            return InitError(strprintf(_("User Agent comment (%s) contains unsafe characters."), cmt));
        uacomments.push_back(cmt);
    }
    strSubVersion = FormatSubVersion(CLIENT_NAME, CLIENT_VERSION, uacomments);
    if (strSubVersion.size() > MAX_SUBVERSION_LENGTH) {
        return InitError(strprintf(_("Total length of network version string (%i) exceeds maximum length (%i). Reduce the number or size of uacomments."),
            strSubVersion.size(), MAX_SUBVERSION_LENGTH));
    }

    if (args.IsArgSet("-onlynet")) {
        g_reachable_nets.RemoveAll();
        for (const std::string& snet : args.GetArgs("-onlynet")) {
            enum Network net = ParseNetwork(snet);
            if (net == NET_UNROUTABLE)
                return InitError(strprintf(_("Unknown network specified in -onlynet: '%s'"), snet));
            g_reachable_nets.Add(net);
        }
    }

    if (!args.IsArgSet("-cjdnsreachable")) {
        if (args.IsArgSet("-onlynet") && g_reachable_nets.Contains(NET_CJDNS)) {
            return InitError(
                _("Outbound connections restricted to CJDNS (-onlynet=cjdns) but "
                  "-cjdnsreachable is not provided"));
        }
        g_reachable_nets.Remove(NET_CJDNS);
    }
    // Now g_reachable_nets.Contains(NET_CJDNS) is true if:
    // 1. -cjdnsreachable is given and
    // 2.1. -onlynet is not given or
    // 2.2. -onlynet=cjdns is given

    // Requesting DNS seeds entails connecting to IPv4/IPv6, which -onlynet options may prohibit:
    // If -dnsseed=1 is explicitly specified, abort. If it's left unspecified by the user, we skip
    // the DNS seeds by adjusting -dnsseed in InitParameterInteraction.
    if (args.GetBoolArg("-dnsseed") == true && !g_reachable_nets.Contains(NET_IPV4) && !g_reachable_nets.Contains(NET_IPV6)) {
        return InitError(strprintf(_("Incompatible options: -dnsseed=1 was explicitly specified, but -onlynet forbids connections to IPv4/IPv6")));
    };

    // Check for host lookup allowed before parsing any network related parameters
    fNameLookup = args.GetBoolArg("-dns", DEFAULT_NAME_LOOKUP);

    Proxy onion_proxy;

    bool proxyRandomize = args.GetBoolArg("-proxyrandomize", DEFAULT_PROXYRANDOMIZE);
    // -proxy sets a proxy for all outgoing network traffic
    // -noproxy (or -proxy=0) as well as the empty string can be used to not set a proxy, this is the default
    std::string proxyArg = args.GetArg("-proxy", "");
    if (proxyArg != "" && proxyArg != "0") {
        const std::optional<CService> proxyAddr{Lookup(proxyArg, 9050, fNameLookup)};
        if (!proxyAddr.has_value()) {
            return InitError(strprintf(_("Invalid -proxy address or hostname: '%s'"), proxyArg));
        }

        Proxy addrProxy = Proxy(proxyAddr.value(), proxyRandomize);
        if (!addrProxy.IsValid())
            return InitError(strprintf(_("Invalid -proxy address or hostname: '%s'"), proxyArg));

        SetProxy(NET_IPV4, addrProxy);
        SetProxy(NET_IPV6, addrProxy);
        SetProxy(NET_CJDNS, addrProxy);
        SetNameProxy(addrProxy);
        onion_proxy = addrProxy;
    }

    const bool onlynet_used_with_onion{args.IsArgSet("-onlynet") && g_reachable_nets.Contains(NET_ONION)};

    // -onion can be used to set only a proxy for .onion, or override normal proxy for .onion addresses
    // -noonion (or -onion=0) disables connecting to .onion entirely
    // An empty string is used to not override the onion proxy (in which case it defaults to -proxy set above, or none)
    std::string onionArg = args.GetArg("-onion", "");
    if (onionArg != "") {
        if (onionArg == "0") { // Handle -noonion/-onion=0
            onion_proxy = Proxy{};
            if (onlynet_used_with_onion) {
                return InitError(
                    _("Outbound connections restricted to Tor (-onlynet=onion) but the proxy for "
                      "reaching the Tor network is explicitly forbidden: -onion=0"));
            }
        } else {
            const std::optional<CService> addr{Lookup(onionArg, 9050, fNameLookup)};
            if (!addr.has_value() || !addr->IsValid()) {
                return InitError(strprintf(_("Invalid -onion address or hostname: '%s'"), onionArg));
            }
            onion_proxy = Proxy{addr.value(), proxyRandomize};
        }
    }

    if (onion_proxy.IsValid()) {
        SetProxy(NET_ONION, onion_proxy);
    } else {
        // If -listenonion is set, then we will (try to) connect to the Tor control port
        // later from the torcontrol thread and may retrieve the onion proxy from there.
        const bool listenonion_disabled{!args.GetBoolArg("-listenonion", DEFAULT_LISTEN_ONION)};
        if (onlynet_used_with_onion && listenonion_disabled) {
            return InitError(
                _("Outbound connections restricted to Tor (-onlynet=onion) but the proxy for "
                  "reaching the Tor network is not provided: none of -proxy, -onion or "
                  "-listenonion is given"));
        }
        g_reachable_nets.Remove(NET_ONION);
    }

    for (const std::string& strAddr : args.GetArgs("-externalip")) {
        const std::optional<CService> addrLocal{Lookup(strAddr, GetListenPort(), fNameLookup)};
        if (addrLocal.has_value() && addrLocal->IsValid())
            AddLocal(addrLocal.value(), LOCAL_MANUAL);
        else
            return InitError(ResolveErrMsg("externalip", strAddr));
    }

    // Read asmap file if configured
    if (args.IsArgSet("-asmap")) {
        fs::path asmap_path = fs::PathFromString(args.GetArg("-asmap", ""));
        if (asmap_path.empty()) {
            asmap_path = DEFAULT_ASMAP_FILENAME;
        }
        if (!asmap_path.is_absolute()) {
            asmap_path = gArgs.GetDataDirNet() / asmap_path;
        }
        if (!fs::exists(asmap_path)) {
            InitError(strprintf(_("Could not find asmap file %s"), fs::PathToString(asmap_path)));
            return false;
        }
        std::vector<bool> asmap = DecodeAsmap(asmap_path);
        if (asmap.size() == 0) {
            InitError(strprintf(_("Could not parse asmap file %s"), fs::PathToString(asmap_path)));
            return false;
        }
        const uint256 asmap_version = (HashWriter{} << asmap).GetHash();
        // asmap is now passed via netgroupman in v26.2
        LogPrintf("Using asmap version %s for IP bucketing\n", asmap_version.ToString());
    } else {
        LogPrintf("Using /16 prefix for IP bucketing\n");
    }

#if ENABLE_ZMQ
    g_zmq_notification_interface = CZMQNotificationInterface::Create(
        [&chainman = node.chainman](CBlock& block, const CBlockIndex& index) {
            assert(chainman);
            return chainman->m_blockman.ReadBlockFromDisk(block, index);
        });

    if (g_zmq_notification_interface) {
        RegisterValidationInterface(g_zmq_notification_interface.get());
    }
#endif

    // ********************************************************* Step 7: load block chain

    node.notifications = std::make_unique<KernelNotifications>(node.exit_status);
    ReadNotificationArgs(args, *node.notifications);
    fReindex = args.GetBoolArg("-reindex", false);
    bool fReindexChainState = args.GetBoolArg("-reindex-chainstate", false);
    
    // Calculate pruning settings
    int64_t nPruneArg = args.GetIntArg("-prune", 0);
    uint64_t nPruneTarget = (nPruneArg < 0) ? 0 : (uint64_t) nPruneArg * 1024 * 1024;
    if (nPruneArg == 1) {  // manual pruning: -prune=1
        nPruneTarget = std::numeric_limits<uint64_t>::max();
    }
    
    ChainstateManager::Options chainman_opts{
        .chainparams = chainparams,
        .datadir = args.GetDataDirNet(),
        .adjusted_time_callback = GetAdjustedTime,
        .notifications = *node.notifications,
    };
    Assert(ApplyArgsManOptions(args, chainman_opts)); // no error can happen, already checked in AppInitParameterInteraction

    node::BlockManager::Options blockman_opts{
        .chainparams = chainman_opts.chainparams,
        .prune_target = nPruneTarget,
        .blocks_dir = args.GetBlocksDirPath(),
        .notifications = chainman_opts.notifications,
    };
    Assert(ApplyArgsManOptions(args, blockman_opts)); // no error can happen, already checked in AppInitParameterInteraction

    // cache size calculations
    CacheSizes cache_sizes = CalculateCacheSizes(args, g_enabled_filter_types.size());

    LogPrintf("Cache configuration:\n");
    LogPrintf("* Using %.1f MiB for block index database\n", cache_sizes.block_tree_db * (1.0 / 1024 / 1024));
    if (args.GetBoolArg("-txindex", DEFAULT_TXINDEX)) {
        LogPrintf("* Using %.1f MiB for transaction index database\n", cache_sizes.tx_index * (1.0 / 1024 / 1024));
    }
    for (BlockFilterType filter_type : g_enabled_filter_types) {
        LogPrintf("* Using %.1f MiB for %s block filter index database\n",
                  cache_sizes.filter_index * (1.0 / 1024 / 1024), BlockFilterTypeName(filter_type));
    }
    LogPrintf("* Using %.1f MiB for chain state database\n", cache_sizes.coins_db * (1.0 / 1024 / 1024));

    assert(!node.mempool);
    assert(!node.chainman);

    CTxMemPool::Options mempool_opts{
        .estimator = node.fee_estimator.get(),
        .check_ratio = chainparams.DefaultConsistencyChecks() ? 1 : 0,
    };
    auto result{ApplyArgsManOptions(args, chainparams, mempool_opts)};
    if (!result) {
        return InitError(util::ErrorString(result));
    }
    mempool_opts.check_ratio = std::clamp<int>(mempool_opts.check_ratio, 0, 1'000'000);

    int64_t descendant_limit_bytes = mempool_opts.limits.descendant_size_vbytes * 40;
    if (mempool_opts.max_size_bytes < 0 || mempool_opts.max_size_bytes < descendant_limit_bytes) {
        return InitError(strprintf(_("-maxmempool must be at least %d MB"), std::ceil(descendant_limit_bytes / 1'000'000.0)));
    }
    LogPrintf("* Using %.1f MiB for in-memory UTXO set (plus up to %.1f MiB of unused mempool space)\n", cache_sizes.coins * (1.0 / 1024 / 1024), mempool_opts.max_size_bytes * (1.0 / 1024 / 1024));

    for (bool fLoaded = false; !fLoaded && !ShutdownRequested();) {
        node.mempool = std::make_unique<CTxMemPool>(mempool_opts);
        
        // Initialize DigiByte stempool for Dandelion++ privacy protocol
        CTxMemPool::Options stempool_opts{
            .estimator = nullptr,
            // The stempool checks its own bookkeeping as often as the main
            // mempool does (-checkmempool; regtest and the tests use 1, so
            // every block and transaction is checked). This used to be
            // hard-wired to 0, so a corrupted stempool went unnoticed until
            // the node crashed.
            .check_ratio = mempool_opts.check_ratio,
            .min_relay_feerate = mempool_opts.min_relay_feerate,  // Use same relay fee as mempool
            .max_datacarrier_bytes = mempool_opts.max_datacarrier_bytes,  // Use same datacarrier settings as mempool
            .is_stempool = true,
        };
        node.stempool = std::make_unique<CTxMemPool>(stempool_opts);

        node.chainman = std::make_unique<ChainstateManager>(node.kernel->interrupt, chainman_opts, blockman_opts);
        ChainstateManager& chainman = *node.chainman;

        // This is defined and set here instead of inline in validation.h to avoid a hard
        // dependency between validation and index/base, since the latter is not in
        // libdigibytekernel.
        chainman.restart_indexes = [&node]() {
            LogPrintf("[snapshot] restarting indexes\n");

            // Drain the validation interface queue to ensure that the old indexes
            // don't have any pending work.
            SyncWithValidationInterfaceQueue();

            for (auto* index : node.indexes) {
                index->Interrupt();
                index->Stop();
                if (!(index->Init() && index->StartBackgroundSync())) {
                    LogPrintf("[snapshot] WARNING failed to restart index %s on snapshot chain\n", index->GetName());
                }
            }
        };

        node::ChainstateLoadOptions options;
        options.mempool = Assert(node.mempool.get());
        options.stempool = Assert(node.stempool.get());
        options.reindex = node::fReindex;
        options.reindex_chainstate = fReindexChainState;
        options.prune = chainman.m_blockman.IsPruneMode();
        options.check_blocks = args.GetIntArg("-checkblocks", DEFAULT_CHECKBLOCKS);
        options.check_level = args.GetIntArg("-checklevel", DEFAULT_CHECKLEVEL);
        options.require_full_verification = args.IsArgSet("-checkblocks") || args.IsArgSet("-checklevel");
        options.check_interrupt = ShutdownRequested;
        options.coins_error_cb = [] {
            uiInterface.ThreadSafeMessageBox(
                _("Error reading from database, shutting down."),
                "", CClientUIInterface::MSG_ERROR);
        };

        uiInterface.InitMessage(_("Loading block index…").translated);
        const auto load_block_index_start_time{SteadyClock::now()};
        auto catch_exceptions = [](auto&& f) {
            try {
                return f();
            } catch (const std::exception& e) {
                LogPrintf("%s\n", e.what());
                return std::make_tuple(node::ChainstateLoadStatus::FAILURE, _("Error opening block database"));
            }
        };
        auto [status, error] = catch_exceptions([&]{ return LoadChainstate(chainman, cache_sizes, options); });
        if (status == node::ChainstateLoadStatus::SUCCESS) {
            uiInterface.InitMessage(_("Verifying blocks…").translated);
            if (chainman.m_blockman.m_have_pruned && options.check_blocks > MIN_BLOCKS_TO_KEEP) {
                LogPrintfCategory(BCLog::PRUNE, "pruned datadir may not have more than %d blocks; only checking available blocks\n",
                                  MIN_BLOCKS_TO_KEEP);
            }
            std::tie(status, error) = catch_exceptions([&]{ return VerifyLoadedChainstate(chainman, options);});
            if (status == node::ChainstateLoadStatus::SUCCESS) {
                fLoaded = true;
                LogPrintf(" block index %15dms\n", Ticks<std::chrono::milliseconds>(SteadyClock::now() - load_block_index_start_time));
            }
        }

        if (status == node::ChainstateLoadStatus::FAILURE_FATAL || status == node::ChainstateLoadStatus::FAILURE_INCOMPATIBLE_DB || status == node::ChainstateLoadStatus::FAILURE_INSUFFICIENT_DBCACHE) {
            return InitError(error);
        }

        if (!fLoaded && !ShutdownRequested()) {
            // first suggest a reindex
            if (!options.reindex) {
                bool fRet = uiInterface.ThreadSafeQuestion(
                    error + Untranslated(".\n\n") + _("Do you want to rebuild the block database now?"),
                    error.original + ".\nPlease restart with -reindex or -reindex-chainstate to recover.",
                    "", CClientUIInterface::MSG_ERROR | CClientUIInterface::BTN_ABORT);
                if (fRet) {
                    fReindex = true;
                    AbortShutdown();
                } else {
                    LogPrintf("Aborted block database rebuild. Exiting.\n");
                    return false;
                }
            } else {
                return InitError(error);
            }
        }
    }

    // As LoadBlockIndex can take several minutes, it's possible the user
    // requested to kill the GUI during the last operation. If so, exit.
    // As the program has not fully started yet, Shutdown() is possibly overkill.
    if (ShutdownRequested()) {
        LogPrintf("Shutdown requested. Exiting.\n");
        return false;
    }

    ChainstateManager& chainman = *Assert(node.chainman);

    assert(!node.peerman);
    node.peerman = PeerManager::make(*node.connman, *node.addrman,
                                     node.banman.get(), chainman,
                                     *node.mempool, *node.stempool, peerman_opts);
    RegisterValidationInterface(node.peerman.get());

    // ********************************************************* Step 8: start indexers

    if (args.GetBoolArg("-txindex", DEFAULT_TXINDEX)) {
        g_txindex = std::make_unique<TxIndex>(interfaces::MakeChain(node), cache_sizes.tx_index, false, fReindex);
        node.indexes.emplace_back(g_txindex.get());
    }

    for (const auto& filter_type : g_enabled_filter_types) {
        InitBlockFilterIndex([&]{ return interfaces::MakeChain(node); }, filter_type, cache_sizes.filter_index, false, fReindex);
        node.indexes.emplace_back(GetBlockFilterIndex(filter_type));
    }

    if (args.GetBoolArg("-coinstatsindex", DEFAULT_COINSTATSINDEX)) {
        g_coin_stats_index = std::make_unique<CoinStatsIndex>(interfaces::MakeChain(node), /*cache_size=*/0, false, fReindex);
        node.indexes.emplace_back(g_coin_stats_index.get());
    }

    // Initialize DigiDollar stats index
    if (args.GetBoolArg("-digidollarstatsindex", DEFAULT_DIGIDOLLARSTATSINDEX)) {
        g_digidollar_stats_index = std::make_unique<DigiDollarStatsIndex>(interfaces::MakeChain(node), /*cache_size=*/0, false, fReindex);
        node.indexes.emplace_back(g_digidollar_stats_index.get());
    }

    // Init indexes
    for (auto index : node.indexes) if (!index->Init()) return false;

    // ********************************************************* Step 9: load wallet
    for (const auto& client : node.chain_clients) {
        if (!client->load()) {
            return false;
        }
    }

    // ********************************************************* Step 10: data directory maintenance

    // if pruning, perform the initial blockstore prune
    // after any wallet rescanning has taken place.
    if (chainman.m_blockman.IsPruneMode()) {
        if (!fReindex) {
            LOCK(cs_main);
            for (Chainstate* chainstate : chainman.GetAll()) {
                uiInterface.InitMessage(_("Pruning blockstore…").translated);
                chainstate->PruneAndFlush();
            }
        }
    } else {
        LogPrintf("Setting NODE_NETWORK on non-prune mode\n");
        nLocalServices = ServiceFlags(nLocalServices | NODE_NETWORK);
    }

    // ********************************************************* Step 11: import blocks

    if (!CheckDiskSpace(args.GetDataDirNet())) {
        InitError(strprintf(_("Error: Disk space is low for %s"), fs::quoted(fs::PathToString(args.GetDataDirNet()))));
        return false;
    }
    if (!CheckDiskSpace(args.GetBlocksDirPath())) {
        InitError(strprintf(_("Error: Disk space is low for %s"), fs::quoted(fs::PathToString(args.GetBlocksDirPath()))));
        return false;
    }

    int chain_active_height = WITH_LOCK(cs_main, return chainman.ActiveChain().Height());

    // On first startup, warn on low block storage space
    if (!fReindex && !fReindexChainState && chain_active_height <= 1) {
        uint64_t assumed_chain_bytes{chainparams.AssumedBlockchainSize() * 1024 * 1024 * 1024};
        uint64_t additional_bytes_needed{
            chainman.m_blockman.IsPruneMode() ?
                std::min(chainman.m_blockman.GetPruneTarget(), assumed_chain_bytes) :
                assumed_chain_bytes};

        if (!CheckDiskSpace(args.GetBlocksDirPath(), additional_bytes_needed)) {
            InitWarning(strprintf(_(
                    "Disk space for %s may not accommodate the block files. " \
                    "Approximately %u GB of data will be stored in this directory."
                ),
                fs::quoted(fs::PathToString(args.GetBlocksDirPath())),
                chainparams.AssumedBlockchainSize()
            ));
        }
    }

    // Either install a handler to notify us when genesis activates, or set fHaveGenesis directly.
    // No locking, as this happens before any background thread is started.
    boost::signals2::connection block_notify_genesis_wait_connection;
    if (WITH_LOCK(chainman.GetMutex(), return chainman.ActiveChain().Tip() == nullptr)) {
        block_notify_genesis_wait_connection = uiInterface.NotifyBlockTip_connect(std::bind(BlockNotifyGenesisWait, std::placeholders::_2));
    } else {
        fHaveGenesis = true;
    }

#if HAVE_SYSTEM
    const std::string block_notify = args.GetArg("-blocknotify", "");
    if (!block_notify.empty()) {
        uiInterface.NotifyBlockTip_connect([block_notify](SynchronizationState sync_state, const CBlockIndex* pBlockIndex) {
            if (sync_state != SynchronizationState::POST_INIT || !pBlockIndex) return;
            std::string command = block_notify;
            ReplaceAll(command, "%s", pBlockIndex->GetBlockHash().GetHex());
            std::thread t(runCommand, command);
            t.detach(); // thread runs free
        });
    }
#endif

    // The signing orchestrator is built, given its connection manager, published
    // and registered for block notifications here: after the chainstate is
    // loaded, and before the import thread below starts or networking takes any
    // peer.
    //
    // Eight places read this global pointer without a lock, on several threads:
    // the peer message handlers, block validation, mining, the command server and
    // bundle assembly. Publishing it while any of them can already be running is a
    // race on the pointer itself, and publishing it before its connection manager
    // arrives leaves it taking block notifications with nowhere to send anything.
    //
    // It was moved twice. Putting it before the connection manager starts closed
    // the peer readers. That was not enough: the import thread below loads the
    // saved mempool, and a DigiDollar transaction in it reaches this pointer
    // through the oracle quote check while accepting the transaction. Publishing
    // above that thread closes the last reader, and closes it by ordering rather
    // than by putting a lock around eight call sites, two of which are block
    // validation and mining.
    //
    // Configure the bundle manager before signing callbacks or import can use
    // it. Price reconstruction stays below, after the import thread is started.
    OracleBundleManager::Initialize();
    OracleBundleManager::GetInstance().SetConnman(node.connman.get());
    OracleSigningOrchestrator::Initialize(node.connman.get());

    std::vector<fs::path> vImportFiles;
    for (const std::string& strFile : args.GetArgs("-loadblock")) {
        vImportFiles.push_back(fs::PathFromString(strFile));
    }

    chainman.m_thread_load = std::thread(&util::TraceThread, "initload", [=, &chainman, &args, &node] {
        // Import blocks
        ImportBlocks(chainman, vImportFiles);
        if (args.GetBoolArg("-stopafterblockimport", DEFAULT_STOPAFTERBLOCKIMPORT)) {
            LogPrintf("Stopping after block import\n");
            StartShutdown();
            return;
        }

        // Start indexes initial sync
        if (!StartIndexBackgroundSync(node)) {
            bilingual_str err_str = _("Failed to start indexes, shutting down..");
            chainman.GetNotifications().fatalError(err_str.original, err_str);
            return;
        }
        // Load mempool from disk
        if (auto* pool{chainman.ActiveChainstate().GetMempool()}) {
            LoadMempool(*pool, ShouldPersistMempool(args) ? MempoolPath(args) : fs::path{}, chainman.ActiveChainstate(), {});
            pool->SetLoadTried(!chainman.m_interrupt);
        }
    });

    // Wait for genesis block to be processed
    {
        WAIT_LOCK(g_genesis_wait_mutex, lock);
        // We previously could hang here if StartShutdown() is called prior to
        // ImportBlocks getting started, so instead we just wait on a timer to
        // check ShutdownRequested() regularly.
        while (!fHaveGenesis && !ShutdownRequested()) {
            g_genesis_wait_cv.wait_for(lock, std::chrono::milliseconds(500));
        }
        block_notify_genesis_wait_connection.disconnect();
    }

    if (ShutdownRequested()) {
        return false;
    }

    // ********************************************************* Step 12: start node

    //// debug print
    {
        LOCK(cs_main);
        LogPrintf("block tree size = %u\n", chainman.BlockIndex().size());
        chain_active_height = chainman.ActiveChain().Height();
        if (tip_info) {
            tip_info->block_height = chain_active_height;
            tip_info->block_time = chainman.ActiveChain().Tip() ? chainman.ActiveChain().Tip()->GetBlockTime() : chainman.GetParams().GenesisBlock().GetBlockTime();
            tip_info->verification_progress = GuessVerificationProgress(chainman.GetParams().TxData(), chainman.ActiveChain().Tip());
        }
        if (tip_info && chainman.m_best_header) {
            tip_info->header_height = chainman.m_best_header->nHeight;
            tip_info->header_time = chainman.m_best_header->GetBlockTime();
        }
    }
    LogPrintf("nBestHeight = %d\n", chain_active_height);
    if (node.peerman) node.peerman->SetBestHeight(chain_active_height);

    // Map ports with UPnP or NAT-PMP.
    StartMapPort(args.GetBoolArg("-upnp", DEFAULT_UPNP), args.GetBoolArg("-natpmp", DEFAULT_NATPMP));

    CConnman::Options connOptions;
    connOptions.nLocalServices = nLocalServices;
    connOptions.nMaxConnections = nMaxConnections;
    connOptions.m_max_outbound_full_relay = std::min(MAX_OUTBOUND_FULL_RELAY_CONNECTIONS, connOptions.nMaxConnections);
    connOptions.m_max_outbound_block_relay = std::min(MAX_BLOCK_RELAY_ONLY_CONNECTIONS, connOptions.nMaxConnections-connOptions.m_max_outbound_full_relay);
    connOptions.nMaxAddnode = MAX_ADDNODE_CONNECTIONS;
    connOptions.nMaxFeeler = MAX_FEELER_CONNECTIONS;
    connOptions.uiInterface = &uiInterface;
    connOptions.m_banman = node.banman.get();
    connOptions.m_msgproc = node.peerman.get();
    connOptions.nSendBufferMaxSize = 1000 * args.GetIntArg("-maxsendbuffer", DEFAULT_MAXSENDBUFFER);
    connOptions.nReceiveFloodSize = 1000 * args.GetIntArg("-maxreceivebuffer", DEFAULT_MAXRECEIVEBUFFER);
    connOptions.m_added_nodes = args.GetArgs("-addnode");
    connOptions.nMaxOutboundLimit = *opt_max_upload;
    connOptions.m_peer_connect_timeout = peer_connect_timeout;

    // Port to bind to if `-bind=addr` is provided without a `:port` suffix.
    const uint16_t default_bind_port =
        static_cast<uint16_t>(args.GetIntArg("-port", Params().GetDefaultPort()));

    const auto BadPortWarning = [](const char* prefix, uint16_t port) {
        return strprintf(_("%s request to listen on port %u. This port is considered \"bad\" and "
                           "thus it is unlikely that any peer will connect to it. See "
                           "doc/p2p-bad-ports.md for details and a full list."),
                         prefix,
                         port);
    };

    for (const std::string& bind_arg : args.GetArgs("-bind")) {
        std::optional<CService> bind_addr;
        const size_t index = bind_arg.rfind('=');
        if (index == std::string::npos) {
            bind_addr = Lookup(bind_arg, default_bind_port, /*fAllowLookup=*/false);
            if (bind_addr.has_value()) {
                connOptions.vBinds.push_back(bind_addr.value());
                if (IsBadPort(bind_addr.value().GetPort())) {
                    InitWarning(BadPortWarning("-bind", bind_addr.value().GetPort()));
                }
                continue;
            }
        } else {
            const std::string network_type = bind_arg.substr(index + 1);
            if (network_type == "onion") {
                const std::string truncated_bind_arg = bind_arg.substr(0, index);
                bind_addr = Lookup(truncated_bind_arg, BaseParams().OnionServiceTargetPort(), false);
                if (bind_addr.has_value()) {
                    connOptions.onion_binds.push_back(bind_addr.value());
                    continue;
                }
            }
        }
        return InitError(ResolveErrMsg("bind", bind_arg));
    }

    for (const std::string& strBind : args.GetArgs("-whitebind")) {
        NetWhitebindPermissions whitebind;
        bilingual_str error;
        if (!NetWhitebindPermissions::TryParse(strBind, whitebind, error)) return InitError(error);
        connOptions.vWhiteBinds.push_back(whitebind);
    }

    // If the user did not specify -bind= or -whitebind= then we bind
    // on any address - 0.0.0.0 (IPv4) and :: (IPv6).
    connOptions.bind_on_any = args.GetArgs("-bind").empty() && args.GetArgs("-whitebind").empty();

    // Emit a warning if a bad port is given to -port= but only if -bind and -whitebind are not
    // given, because if they are, then -port= is ignored.
    if (connOptions.bind_on_any && args.IsArgSet("-port")) {
        const uint16_t port_arg = args.GetIntArg("-port", 0);
        if (IsBadPort(port_arg)) {
            InitWarning(BadPortWarning("-port", port_arg));
        }
    }

    if (args.GetBoolArg("-listenonion", DEFAULT_LISTEN_ONION)) {
        CService onion_service_target;
        if (!connOptions.onion_binds.empty()) {
            onion_service_target = connOptions.onion_binds.front();
        } else {
            onion_service_target = DefaultOnionServiceTarget();
            connOptions.onion_binds.push_back(onion_service_target);
        }

        if (connOptions.onion_binds.size() > 1) {
            InitWarning(strprintf(_("More than one onion bind address is provided. Using %s "
                                    "for the automatically created Tor onion service."),
                                  onion_service_target.ToStringAddrPort()));
        }
        StartTorControl(onion_service_target);
    }

    if (connOptions.bind_on_any) {
        // Only add all IP addresses of the machine if we would be listening on
        // any address - 0.0.0.0 (IPv4) and :: (IPv6).
        Discover();
    }

    for (const auto& net : args.GetArgs("-whitelist")) {
        NetWhitelistPermissions subnet;
        bilingual_str error;
        if (!NetWhitelistPermissions::TryParse(net, subnet, error)) return InitError(error);
        connOptions.vWhitelistedRange.push_back(subnet);
    }

    connOptions.vSeedNodes = args.GetArgs("-seednode");

    // Initiate outbound connections unless connect=0
    connOptions.m_use_addrman_outgoing = !args.IsArgSet("-connect");
    if (!connOptions.m_use_addrman_outgoing) {
        const auto connect = args.GetArgs("-connect");
        if (connect.size() != 1 || connect[0] != "0") {
            connOptions.m_specified_outgoing = connect;
        }
        if (!connOptions.m_specified_outgoing.empty() && !connOptions.vSeedNodes.empty()) {
            LogPrintf("-seednode is ignored when -connect is used\n");
        }

        if (args.IsArgSet("-dnsseed") && args.GetBoolArg("-dnsseed", DEFAULT_DNSSEED) && args.IsArgSet("-proxy")) {
            LogPrintf("-dnsseed is ignored when -connect is used and -proxy is specified\n");
        }
    }

    const std::string& i2psam_arg = args.GetArg("-i2psam", "");
    if (!i2psam_arg.empty()) {
        const std::optional<CService> addr{Lookup(i2psam_arg, 7656, fNameLookup)};
        if (!addr.has_value() || !addr->IsValid()) {
            return InitError(strprintf(_("Invalid -i2psam address or hostname: '%s'"), i2psam_arg));
        }
        SetProxy(NET_I2P, Proxy{addr.value()});
    } else {
        if (args.IsArgSet("-onlynet") && g_reachable_nets.Contains(NET_I2P)) {
            return InitError(
                _("Outbound connections restricted to i2p (-onlynet=i2p) but "
                  "-i2psam is not provided"));
        }
        g_reachable_nets.Remove(NET_I2P);
    }

    connOptions.m_i2p_accept_incoming = args.GetBoolArg("-i2pacceptincoming", DEFAULT_I2P_ACCEPT_INCOMING);

    if (!node.connman->Start(*node.scheduler, connOptions)) {
        return false;
    }

    // Keep required reconstruction synchronous and publish only a complete scan.
    OracleBundleManager::LoadCallbacks oracle_load_callbacks;
    oracle_load_callbacks.cancelled = ShutdownRequested;
    oracle_load_callbacks.progress = [](uint64_t completed, uint64_t total) {
        const int percent = total == 0 ? 100 : static_cast<int>(completed * 100 / total);
        uiInterface.InitMessage(strprintf(_("Reconstructing oracle prices: %u of %u blocks").translated,
                                          completed, total));
        uiInterface.ShowProgress(_("Reconstructing oracle prices").translated, percent, false);
    };
    const auto oracle_load = OracleBundleManager::LoadPricesFromChain(chainman, oracle_load_callbacks);
    if (oracle_load.status == OracleBundleManager::LoadStatus::CANCELLED) {
        return false;
    }
    if (oracle_load.status == OracleBundleManager::LoadStatus::READ_ERROR) {
        return InitError(strprintf(_("Oracle price reconstruction could not read block %s at height %d. "
                                    "Restore or redownload the required block data before restarting."),
                                   oracle_load.block_hash.ToString(), oracle_load.height));
    }
    // Canonical health was prepared before import. Legacy health still needs
    // its complete synchronous scan before startup can finish.
    DigiDollar::HealthScanCallbacks health_callbacks;
    health_callbacks.cancelled = ShutdownRequested;
    health_callbacks.progress = [](uint64_t completed, uint64_t total) {
        uiInterface.InitMessage(strprintf(_("Reconstructing DigiDollar health: %u outputs checked").translated, completed));
        uiInterface.ShowProgress(_("Reconstructing DigiDollar health").translated,
                                 total ? static_cast<int>(100 * completed / total) : 0, false);
    };
    const auto health_load = DigiDollar::SystemHealthMonitor::ReconstructFromChain(chainman, health_callbacks);
    uiInterface.ShowProgress("", 100, false);
    if (health_load.status == DigiDollar::HealthScanResult::Status::CANCELLED) {
        uiInterface.InitMessage(_("DigiDollar health reconstruction cancelled").translated);
        return false;
    }
    if (health_load.status == DigiDollar::HealthScanResult::Status::READ_ERROR) {
        return InitError(Untranslated(health_load.error));
    }

    // DD-FINAL-005 / AR-0: OP_CHECKPRICE is deterministically DISABLED (it now
    // consumes its witness operand and always pushes vchFalse). The interpreter no
    // longer consults g_get_oracle_consensus_price, so the production hook is left
    // null here intentionally — wiring it to OracleBundleManager::GetLatestPrice()
    // was node-local + wall-clock dependent and is exactly the cross-node
    // non-determinism (chain-split) that DD-FINAL-005 removed. The hook symbol
    // remains only for unit tests, which install their own scoped hook. A future
    // price-checking opcode must bind to the block's own committed v0x03 bundle
    // price to be consensus-safe.

    // ********************************************************* Step 13: finished

    // At this point, the RPC is "started", but still in warmup, which means it
    // cannot yet be called. Before we make it callable, we need to make sure
    // that the RPC's view of the best block is valid and consistent with
    // ChainstateManager's active tip.
    //
    // If we do not do this, RPC's view of the best block will be height=0 and
    // hash=0x0. This will lead to erroroneous responses for things like
    // waitforblockheight.
    RPCNotifyBlockChange(WITH_LOCK(chainman.GetMutex(), return chainman.ActiveTip()));
    SetRPCWarmupFinished();

    uiInterface.InitMessage(_("Done loading").translated);

    for (const auto& client : node.chain_clients) {
        client->start(*node.scheduler);
    }

    BanMan* banman = node.banman.get();
    node.scheduler->scheduleEvery([banman]{
        banman->DumpBanlist();
    }, DUMP_BANS_INTERVAL);

    if (node.peerman) node.peerman->StartScheduledTasks(*node.scheduler);

#if HAVE_SYSTEM
    StartupNotify(args);
#endif

    return true;
}

bool StartIndexBackgroundSync(NodeContext& node)
{
    // Find the oldest block among all indexes.
    // This block is used to verify that we have the required blocks' data stored on disk,
    // starting from that point up to the current tip.
    // indexes_start_block='nullptr' means "start from height 0".
    std::optional<const CBlockIndex*> indexes_start_block;
    std::string older_index_name;
    ChainstateManager& chainman = *Assert(node.chainman);
    const Chainstate& chainstate = WITH_LOCK(::cs_main, return chainman.GetChainstateForIndexing());
    const CChain& index_chain = chainstate.m_chain;

    for (auto index : node.indexes) {
        const IndexSummary& summary = index->GetSummary();
        if (summary.synced) continue;

        // Get the last common block between the index best block and the active chain
        LOCK(::cs_main);
        const CBlockIndex* pindex = chainman.m_blockman.LookupBlockIndex(summary.best_block_hash);
        if (!index_chain.Contains(pindex)) {
            pindex = index_chain.FindFork(pindex);
        }

        if (!indexes_start_block || !pindex || pindex->nHeight < indexes_start_block.value()->nHeight) {
            indexes_start_block = pindex;
            older_index_name = summary.name;
            if (!pindex) break; // Starting from genesis so no need to look for earlier block.
        }
    };

    // Verify all blocks needed to sync to current tip are present.
    if (indexes_start_block) {
        LOCK(::cs_main);
        const CBlockIndex* start_block = *indexes_start_block;
        if (!start_block) start_block = chainman.ActiveChain().Genesis();
        if (!chainman.m_blockman.CheckBlockDataAvailability(*index_chain.Tip(), *Assert(start_block))) {
            return InitError(strprintf(Untranslated("%s best block of the index goes beyond pruned data. Please disable the index or reindex (which will download the whole blockchain again)"), older_index_name));
        }
    }

    // Start threads
    for (auto index : node.indexes) if (!index->StartBackgroundSync()) return false;
    return true;
}