diff --git a/.github/workflows/build-and-test.yml b/.github/workflows/build-and-test.yml
index 03b27649155d..d7e081079eb1 100644
--- a/.github/workflows/build-and-test.yml
+++ b/.github/workflows/build-and-test.yml
@@ -431,7 +431,7 @@ jobs:
 
           if [ "${{ matrix.config.unit_tests }}" = "true" ] || [ "${{ matrix.config.functional_tests }}" = "true" ]; then
             echo ::group::Params
-            util/fetch-params.sh $PARAMS_DIR
+            ./params/install-params.sh $PARAMS_DIR
             echo ::endgroup::
           fi
 
diff --git a/Makefile.am b/Makefile.am
index b6fc01a2e3cc..f816decb9595 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -7,6 +7,7 @@ SUBDIRS = src
 if ENABLE_MAN
 SUBDIRS += doc/man
 endif
+SUBDIRS += params
 .PHONY: deploy FORCE
 
 export PYTHONPATH
@@ -53,7 +54,7 @@ DIST_CARGO = \
            $(top_srcdir)/Cargo.lock \
            $(top_srcdir)/Cargo.toml \
            $(top_srcdir)/rust-toolchain \
-           $(top_srcdir)/util/fetch-params.sh
+           $(top_srcdir)/params/install-params.sh
 
 BIN_CHECKS=$(top_srcdir)/contrib/devtools/symbol-check.py \
            $(top_srcdir)/contrib/devtools/security-check.py
@@ -73,6 +74,9 @@ OSX_PACKAGING = $(OSX_DEPLOY_SCRIPT) $(OSX_FANCY_PLIST) $(OSX_INSTALLER_ICONS) \
   $(top_srcdir)/contrib/macdeploy/detached-sig-apply.sh \
   $(top_srcdir)/contrib/macdeploy/detached-sig-create.sh
 
+SPEND_PARAMS = $(top_srcdir)/params/sapling-spend.params
+OUTPUT_PARAMS = $(top_srcdir)/params/sapling-output.params
+
 COVERAGE_INFO = baseline.info \
   test_pivx_filtered.info total_coverage.info \
   baseline_filtered.info functional_test.info functional_test_filtered.info \
@@ -114,9 +118,18 @@ $(OSX_APP)/Contents/Resources/Base.lproj/InfoPlist.strings:
 	$(MKDIR_P) $(@D)
 	echo '{	CFBundleDisplayName = "$(PACKAGE_NAME)"; CFBundleName = "$(PACKAGE_NAME)"; }' > $@
 
+$(OSX_APP)/Contents/Resources/sapling-spend.params: $(SPEND_PARAMS)
+	$(MKDIR_P) $(@D)
+	$(INSTALL_DATA) $< $@
+
+$(OSX_APP)/Contents/Resources/sapling-output.params: $(OUTPUT_PARAMS)
+	$(MKDIR_P) $(@D)
+	$(INSTALL_DATA) $< $@
+
 OSX_APP_BUILT=$(OSX_APP)/Contents/PkgInfo $(OSX_APP)/Contents/Resources/empty.lproj \
   $(OSX_APP)/Contents/Resources/bitcoin.icns $(OSX_APP)/Contents/Info.plist \
-  $(OSX_APP)/Contents/MacOS/PIVX-Qt $(OSX_APP)/Contents/Resources/Base.lproj/InfoPlist.strings
+  $(OSX_APP)/Contents/MacOS/PIVX-Qt $(OSX_APP)/Contents/Resources/Base.lproj/InfoPlist.strings \
+  $(OSX_APP)/Contents/Resources/sapling-spend.params $(OSX_APP)/Contents/Resources/sapling-output.params
 
 osx_volname:
 	echo $(OSX_VOLNAME) >$@
diff --git a/build-aux/snap/snapcraft.yaml b/build-aux/snap/snapcraft.yaml
index 9a9e8ecf1962..70fe8e356c9f 100644
--- a/build-aux/snap/snapcraft.yaml
+++ b/build-aux/snap/snapcraft.yaml
@@ -175,9 +175,9 @@ parts:
       fi
       ./autogen.sh
       if [ $DEPENDS = 1 ]; then
-        ./configure --prefix=`pwd`/depends/${HOST} --with-params-dir=${SNAP_USER_COMMON}/${PARAMSDIR}
+        ./configure --prefix=`pwd`/depends/${HOST}
       else
-        ./configure --with-incompatible-bdb --with-params-dir=${SNAP_USER_COMMON}/${PARAMSDIR}
+        ./configure --with-incompatible-bdb
       fi
       echo "-----------------------------------------------"
       echo "+++++++++++++++++++++++++++++++++++++++++++++++"
@@ -231,11 +231,13 @@ parts:
       echo "CONFIG FILE" # create .pivx folder and copy example config - !!!warning!!!: do not copy as pivx.conf
       echo "+++++++++++++++++++++++++++++++++++++++++++++++"
       mkdir -p ${SNAP_USER_COMMON}/.${DATADIR}
+      mkdir -p ${SNAP_USER_COMMON}/${PARAMSDIR}
       if [ $COPYCONF = 1 ]; then
         cp ${SNAPCRAFT_PART_BUILD}/contrib/debian/manpages/${CONF}.conf.5 ${SNAP_USER_COMMON}/.${DATADIR}/${CONF}-example.conf
       else
         echo "COPY CONFIG FILE disabled, skipping"
       fi
+      cp ${SNAPCRAFT_PART_BUILD}/params/*.params ${SNAP_USER_COMMON}/${PARAMSDIR}/
       echo "-----------------------------------------------"
       echo "+++++++++++++++++++++++++++++++++++++++++++++++"
       echo "RUN TESTS" # if tests fail to pass, build and release will fail
@@ -243,7 +245,6 @@ parts:
       cd ${SNAPCRAFT_PART_BUILD}
       if [ ! $SNAPCRAFT_ARCH_TRIPLET = "s390x-linux-gnu" ]; then
         if [ $RUNTESTS = 1 ]; then
-          ${SNAPCRAFT_PROJECT_DIR}/util/fetch-params.sh ${SNAP_USER_COMMON}/${PARAMSDIR}
           make check
         else
           echo "RUN TESTS disabled, skipping"
@@ -300,6 +301,7 @@ parts:
       - libdb++-dev
     stage-packages:
       - libxkbcommon0
+      - libxcb-xinerama0
       - ttf-ubuntu-font-family
       - dmz-cursor-theme
       - light-themes
@@ -324,6 +326,8 @@ parts:
       - libpgm-5.2-0
       - libprotobuf10
       - libqrencode3
+      - libqt5core5a
+      - libqt5dbus5
       - libqt5charts5
       - libqt5test5
       - libsodium23
diff --git a/configure.ac b/configure.ac
index f735a24cd635..443e2be973de 100644
--- a/configure.ac
+++ b/configure.ac
@@ -599,6 +599,7 @@ case $host in
      fi
 
      AX_CHECK_LINK_FLAG([[-Wl,-headerpad_max_install_names]], [LDFLAGS="$LDFLAGS -Wl,-headerpad_max_install_names"])
+     AX_CHECK_LINK_FLAG([[-framework CoreFoundation]], [LDFLAGS="$LDFLAGS -framework CoreFoundation"], [AC_MSG_ERROR([could not find CoreFoundation framework])])
      CPPFLAGS="$CPPFLAGS -DMAC_OSX -DOBJC_OLD_DISPATCH_PROTOTYPES=0"
      OBJCXXFLAGS="$CXXFLAGS"
      ;;
@@ -1485,7 +1486,7 @@ AC_SUBST(HAVE_BUILTIN_PREFETCH)
 AC_SUBST(HAVE_MM_PREFETCH)
 AC_SUBST(HAVE_STRONG_GETAUXVAL)
 AC_SUBST(HAVE_WEAK_GETAUXVAL)
-AC_CONFIG_FILES([Makefile src/Makefile doc/man/Makefile share/setup.nsi share/qt/Info.plist test/config.ini])
+AC_CONFIG_FILES([Makefile src/Makefile doc/man/Makefile params/Makefile share/setup.nsi share/qt/Info.plist test/config.ini])
 AC_CONFIG_FILES([contrib/devtools/split-debug.sh],[chmod +x contrib/devtools/split-debug.sh])
 AM_COND_IF([HAVE_DOXYGEN], [AC_CONFIG_FILES([doc/Doxyfile])])
 AC_CONFIG_LINKS([contrib/filter-lcov.py:contrib/filter-lcov.py])
diff --git a/contrib/gitian-descriptors/gitian-linux.yml b/contrib/gitian-descriptors/gitian-linux.yml
index 9a13b7c71247..9c90674e0dc9 100644
--- a/contrib/gitian-descriptors/gitian-linux.yml
+++ b/contrib/gitian-descriptors/gitian-linux.yml
@@ -184,6 +184,7 @@ script: |
     find ${DISTNAME}/bin -type f -executable -print0 | xargs -0 -n1 -I{} ../contrib/devtools/split-debug.sh {} {} {}.dbg
     #find ${DISTNAME}/lib -type f -print0 | xargs -0 -n1 -I{} ../contrib/devtools/split-debug.sh {} {} {}.dbg
     cp ../doc/README.md ${DISTNAME}/
+    cp ../params/install-params.sh ${DISTNAME}/
     find ${DISTNAME} -not -name "*.dbg" | sort | tar --no-recursion --mode='u+rw,go+r-w,a+X' --owner=0 --group=0 -c -T - | gzip -9n > ${OUTDIR}/${DISTNAME}-${i}.tar.gz
     find ${DISTNAME} -name "*.dbg" | sort | tar --no-recursion --mode='u+rw,go+r-w,a+X' --owner=0 --group=0 -c -T - | gzip -9n > ${OUTDIR}/${DISTNAME}-${i}-debug.tar.gz
     cd ../../
diff --git a/contrib/gitian-descriptors/gitian-osx.yml b/contrib/gitian-descriptors/gitian-osx.yml
index 96115a094ae5..0f87e9891dca 100644
--- a/contrib/gitian-descriptors/gitian-osx.yml
+++ b/contrib/gitian-descriptors/gitian-osx.yml
@@ -162,6 +162,7 @@ script: |
     find . -name "lib*.la" -delete
     find . -name "lib*.a" -delete
     rm -rf ${DISTNAME}/lib/pkgconfig
+    cp ../params/install-params.sh ${DISTNAME}/
     find ${DISTNAME} | sort | tar --no-recursion --mode='u+rw,go+r-w,a+X' --owner=0 --group=0 -c -T - | gzip -9n > ${OUTDIR}/${DISTNAME}-${i}.tar.gz
     cd ../../
   done
diff --git a/doc/README.md b/doc/README.md
index 092e65d187a7..9d607ca762b4 100644
--- a/doc/README.md
+++ b/doc/README.md
@@ -16,6 +16,8 @@ Unpack the files into a directory and run:
 - `bin/pivx-qt` (GUI) or
 - `bin/pivxd` (headless)
 
+If this is the first time running PIVX Core (since v5.0.0), you'll need to install the sapling params by running the included `install-params.sh` script, which copies the two params files to `$HOME/.pivx-params`
+
 ### Windows
 
 Unpack the files into a directory, and then run pivx-qt.exe.
diff --git a/params/Makefile.am b/params/Makefile.am
new file mode 100644
index 000000000000..02f1a142d17e
--- /dev/null
+++ b/params/Makefile.am
@@ -0,0 +1,3 @@
+dist_data_DATA =
+
+dist_data_DATA+=sapling-output.params sapling-spend.params
diff --git a/params/install-params.sh b/params/install-params.sh
new file mode 100755
index 000000000000..1d7a47375da0
--- /dev/null
+++ b/params/install-params.sh
@@ -0,0 +1,141 @@
+#!/usr/bin/env bash
+#
+# Copyright (c) 2015-2020 The Zcash developers
+# Copyright (c) 2020 The PIVX developers
+# Distributed under the MIT software license, see the accompanying
+# file COPYING or http://www.opensource.org/licenses/mit-license.php.
+
+export LC_ALL=C.UTF-8
+
+set -eu
+
+if [ -n "${1:-}" ]; then
+    PARAMS_DIR="$1"
+else
+    if [[ "$OSTYPE" == "darwin"* ]]; then
+        PARAMS_DIR="$HOME/Library/Application Support/PIVXParams"
+    else
+        PARAMS_DIR="$HOME/.pivx-params"
+    fi
+fi
+
+SAPLING_SPEND_NAME='sapling-spend.params'
+SAPLING_OUTPUT_NAME='sapling-output.params'
+
+SHA256CMD="$(command -v sha256sum || echo shasum)"
+SHA256ARGS="$(command -v sha256sum >/dev/null || echo '-a 256')"
+
+pushd () {
+    command pushd "$@" > /dev/null
+}
+
+popd () {
+    command popd > /dev/null
+}
+
+function install_params {
+    local filename="$1"
+    local output="$2"
+    local expectedhash="$3"
+
+    # if the params don't exist in the current directory, assume we're running from release tarballs
+    if ! [ -f "$filename" ]
+    then
+        filename="share/$filename"
+    fi
+
+    if ! [ -f "$output" ]
+    then
+        "$SHA256CMD" $SHA256ARGS -c <<EOF
+$expectedhash  $filename
+EOF
+
+        # Check the exit code of the shasum command:
+        CHECKSUM_RESULT=$?
+        if [ $CHECKSUM_RESULT -eq 0 ]; then
+            cp -v "$filename" "$output"
+        else
+            echo "Failed to verify parameter checksums!" >&2
+            exit 1
+        fi
+    fi
+}
+
+# Use flock to prevent parallel execution.
+function lock() {
+    local lockfile=/tmp/install_params.lock
+    if [[ "$OSTYPE" == "darwin"* ]]; then
+        if shlock -f ${lockfile} -p $$; then
+            return 0
+        else
+            return 1
+        fi
+    else
+        # create lock file
+        eval "exec 200>$lockfile"
+        # acquire the lock
+        flock -n 200 \
+            && return 0 \
+            || return 1
+    fi
+}
+
+function exit_locked_error {
+    echo "Only one instance of install-params.sh can be run at a time." >&2
+    exit 1
+}
+
+function main() {
+
+    lock install-params.sh \
+    || exit_locked_error
+
+    cat <<EOF
+PIVX - install-params.sh
+
+This script will install the PIVX zkSNARK parameters and verify their
+integrity with sha256sum.
+
+If they already exist locally, it will exit now and do nothing else.
+EOF
+
+    # Now create PARAMS_DIR and insert a README if necessary:
+    if ! [ -d "$PARAMS_DIR" ]
+    then
+        mkdir -p "$PARAMS_DIR"
+        README_PATH="$PARAMS_DIR/README"
+        cat >> "$README_PATH" <<EOF
+This directory stores common PIVX zkSNARK parameters. Note that it is
+distinct from the daemon's -datadir argument because the parameters are
+large and may be shared across multiple distinct -datadir's such as when
+setting up test networks.
+EOF
+
+        # This may be the first time the user's run this script, so give
+        # them some info:
+        cat <<EOF
+If the files are already present and have the correct
+sha256sum, nothing else is done.
+
+Creating params directory. For details about this directory, see:
+$README_PATH
+
+EOF
+    fi
+
+    if [ -d ".git" ] || [ -f autogen.sh ]
+    then
+        echo "Installing from source repo or dist tarball"
+        pushd params
+    fi
+
+    # Sapling parameters:
+    install_params "$SAPLING_SPEND_NAME" "$PARAMS_DIR/$SAPLING_SPEND_NAME" "8e48ffd23abb3a5fd9c5589204f32d9c31285a04b78096ba40a79b75677efc13"
+    install_params "$SAPLING_OUTPUT_NAME" "$PARAMS_DIR/$SAPLING_OUTPUT_NAME" "2f0ebbcbb9bb0bcffe95a397e7eba89c29eb4dde6191c339db88570e3f3fb0e4"
+
+    popd
+}
+
+main
+rm -f /tmp/install_params.lock
+exit 0
diff --git a/params/sapling-output.params b/params/sapling-output.params
new file mode 100644
index 000000000000..01760fa46ed1
Binary files /dev/null and b/params/sapling-output.params differ
diff --git a/params/sapling-spend.params b/params/sapling-spend.params
new file mode 100644
index 000000000000..b91cd77137a3
Binary files /dev/null and b/params/sapling-spend.params differ
diff --git a/share/setup.nsi.in b/share/setup.nsi.in
index 5a1bb3e59ea5..a695c19334da 100644
--- a/share/setup.nsi.in
+++ b/share/setup.nsi.in
@@ -80,6 +80,9 @@ Section -Main SEC0000
     File @abs_top_srcdir@/release/@BITCOIN_CLI_NAME@@EXEEXT@
     SetOutPath $INSTDIR\doc
     File /r @abs_top_srcdir@/doc\*.*
+    SetOutPath $APPDATA\PIVXParams
+    File @abs_top_srcdir@/params/sapling-output.params
+    File @abs_top_srcdir@/params/sapling-spend.params
     SetOutPath $INSTDIR
     WriteRegStr HKCU "${REGKEY}\Components" Main 1
 SectionEnd
diff --git a/src/util.cpp b/src/util.cpp
index 99a16d7980c7..708f112fb498 100644
--- a/src/util.cpp
+++ b/src/util.cpp
@@ -72,6 +72,10 @@
 #include <sys/prctl.h>
 #endif
 
+#ifdef MAC_OSX
+#include <CoreFoundation/CoreFoundation.h>
+#endif
+
 #include <boost/program_options/detail/config_file.hpp>
 #include <boost/program_options/parsers.hpp>
 #include <openssl/conf.h>
@@ -441,11 +445,41 @@ void initZKSNARKS()
     fs::path sapling_spend = path / "sapling-spend.params";
     fs::path sapling_output = path / "sapling-output.params";
 
-    if (!(fs::exists(sapling_spend) &&
-          fs::exists(sapling_output)
-    )) {
-        throw std::runtime_error("Sapling params don't exist");
+    bool fParamsFound = false;
+    if (fs::exists(sapling_spend) && fs::exists(sapling_output)) {
+        fParamsFound = true;
+    } else {
+#ifdef MAC_OSX
+        // macOS fallback path for params located within the app bundle
+        // This is a somewhat convoluted series of CoreFoundation calls
+        // that will result in the full path to the app bundle's "Resources"
+        // directory, which will contain the sapling params.
+        LogPrintf("Attempting to find params in app bundle...\n");
+        CFBundleRef mainBundle = CFBundleGetMainBundle();
+        CFURLRef bundleURL = CFBundleCopyBundleURL(mainBundle);
+
+        CFStringRef strBundlePath = CFURLCopyFileSystemPath(bundleURL, kCFURLPOSIXPathStyle);
+        const char* pathBundle = CFStringGetCStringPtr(strBundlePath, CFStringGetSystemEncoding());
+
+        fs::path bundle_path = fs::path(pathBundle);
+        LogPrintf("App bundle Resources path: %s\n", bundle_path);
+        sapling_spend = bundle_path / "Contents/Resources/sapling-spend.params";
+        sapling_output = bundle_path / "Contents/Resources/sapling-output.params";
+
+        // Release the CF objects
+        CFRelease(strBundlePath);
+        CFRelease(bundleURL);
+        CFRelease(mainBundle);
+#else
+        // Linux fallback path for debuild/ppa based installs
+        sapling_spend = "/usr/local/share/sapling-spend.params";
+        sapling_output = "/usr/local/share/sapling-output.params";
+#endif
+        if (fs::exists(sapling_spend) && fs::exists(sapling_output))
+            fParamsFound = true;
     }
+    if (!fParamsFound)
+        throw std::runtime_error("Sapling params don't exist");
 
     static_assert(
         sizeof(fs::path::value_type) == sizeof(codeunit),