testnet: Introduce Testnet4

src/qt/guiconstants.h

@@ -50,6 +50,7 @@ static const int TOOLTIP_WRAP_THRESHOLD = 80;
 #define QAPP_ORG_DOMAIN "bitcoin.org"
 #define QAPP_APP_NAME_DEFAULT "Bitcoin-Qt"
 #define QAPP_APP_NAME_TESTNET "Bitcoin-Qt-testnet"
+#define QAPP_APP_NAME_TESTNET4 "Bitcoin-Qt-testnet4"
 #define QAPP_APP_NAME_SIGNET "Bitcoin-Qt-signet"
 #define QAPP_APP_NAME_REGTEST "Bitcoin-Qt-regtest"
 

src/qt/guiutil.cpp

@@ -115,6 +115,7 @@ static std::string DummyAddress(const CChainParams &params)
         break;
     case ChainType::SIGNET:
     case ChainType::TESTNET:
+    case ChainType::TESTNET4:
         addr = "tb1p35yvjel7srp783ztf8v6jdra7dhfzk5jaun8xz2qp6ws7z80n4tqa6qnlg";
         break;
     case ChainType::REGTEST:

src/qt/networkstyle.cpp

@@ -19,6 +19,7 @@ static const struct {
 } network_styles[] = {
     {ChainType::MAIN, QAPP_APP_NAME_DEFAULT, 0, 0},
     {ChainType::TESTNET, QAPP_APP_NAME_TESTNET, 70, 30},
+    {ChainType::TESTNET4, QAPP_APP_NAME_TESTNET4, 70, 30},
     {ChainType::SIGNET, QAPP_APP_NAME_SIGNET, 35, 15},
     {ChainType::REGTEST, QAPP_APP_NAME_REGTEST, 160, 30},
 };