diff --git a/.github/workflows/ci-expanded.yml b/.github/workflows/ci-expanded.yml
index 94eb7f25..f2a21344 100644
--- a/.github/workflows/ci-expanded.yml
+++ b/.github/workflows/ci-expanded.yml
@@ -543,7 +543,7 @@ jobs:
         working-directory: 'libbitcoin-node'
         run: |
           lcov --ignore-errors version,gcov,mismatch,mismatch --directory . --capture --output-file coverage.info
-          lcov --ignore-errors unused --remove coverage.info "${{ github.workspace }}/prefix/*" "${{ github.workspace }}/libbitcoin-node/examples/*" "${{ github.workspace }}/libbitcoin-node/test/*"  --output-file coverage.info
+          lcov --ignore-errors unused --extract coverage.info "${{ github.workspace }}/libbitcoin-node/include/*" "${{ github.workspace }}/libbitcoin-node/src/*" --output-file coverage.info
 
       - name: Coveralls.io upload
         if: ${{ matrix.coverage == 'lcov' }}
@@ -1118,7 +1118,7 @@ jobs:
         working-directory: 'libbitcoin-node'
         run: |
           lcov --ignore-errors version,gcov,mismatch,mismatch --directory . --capture --output-file coverage.info
-          lcov --ignore-errors unused --remove coverage.info "${{ github.workspace }}/prefix/*" "${{ github.workspace }}/libbitcoin-node/examples/*" "${{ github.workspace }}/libbitcoin-node/test/*"  --output-file coverage.info
+          lcov --ignore-errors unused --extract coverage.info "${{ github.workspace }}/libbitcoin-node/include/*" "${{ github.workspace }}/libbitcoin-node/src/*" --output-file coverage.info
 
       - name: Coveralls.io upload
         if: ${{ matrix.coverage == 'lcov' }}
@@ -1616,7 +1616,7 @@ jobs:
         working-directory: 'libbitcoin-node'
         run: |
           lcov --ignore-errors version,gcov,mismatch,mismatch --directory . --capture --output-file coverage.info
-          lcov --ignore-errors unused --remove coverage.info "${{ github.workspace }}/prefix/*" "${{ github.workspace }}/libbitcoin-node/examples/*" "${{ github.workspace }}/libbitcoin-node/test/*"  --output-file coverage.info
+          lcov --ignore-errors unused --extract coverage.info "${{ github.workspace }}/libbitcoin-node/include/*" "${{ github.workspace }}/libbitcoin-node/src/*" --output-file coverage.info
 
       - name: Coveralls.io upload
         if: ${{ matrix.coverage == 'lcov' }}
diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index c750e0e6..2e593976 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -239,7 +239,7 @@ jobs:
         working-directory: 'libbitcoin-node'
         run: |
           lcov --ignore-errors version,gcov,mismatch,mismatch --directory . --capture --output-file coverage.info
-          lcov --ignore-errors unused --remove coverage.info "${{ github.workspace }}/prefix/*" "${{ github.workspace }}/libbitcoin-node/examples/*" "${{ github.workspace }}/libbitcoin-node/test/*"  --output-file coverage.info
+          lcov --ignore-errors unused --extract coverage.info "${{ github.workspace }}/libbitcoin-node/include/*" "${{ github.workspace }}/libbitcoin-node/src/*" --output-file coverage.info
 
       - name: Coveralls.io upload
         if: ${{ matrix.coverage == 'lcov' }}
@@ -507,7 +507,7 @@ jobs:
         working-directory: 'libbitcoin-node'
         run: |
           lcov --ignore-errors version,gcov,mismatch,mismatch --directory . --capture --output-file coverage.info
-          lcov --ignore-errors unused --remove coverage.info "${{ github.workspace }}/prefix/*" "${{ github.workspace }}/libbitcoin-node/examples/*" "${{ github.workspace }}/libbitcoin-node/test/*"  --output-file coverage.info
+          lcov --ignore-errors unused --extract coverage.info "${{ github.workspace }}/libbitcoin-node/include/*" "${{ github.workspace }}/libbitcoin-node/src/*" --output-file coverage.info
 
       - name: Coveralls.io upload
         if: ${{ matrix.coverage == 'lcov' }}
@@ -733,7 +733,7 @@ jobs:
         working-directory: 'libbitcoin-node'
         run: |
           lcov --ignore-errors version,gcov,mismatch,mismatch --directory . --capture --output-file coverage.info
-          lcov --ignore-errors unused --remove coverage.info "${{ github.workspace }}/prefix/*" "${{ github.workspace }}/libbitcoin-node/examples/*" "${{ github.workspace }}/libbitcoin-node/test/*"  --output-file coverage.info
+          lcov --ignore-errors unused --extract coverage.info "${{ github.workspace }}/libbitcoin-node/include/*" "${{ github.workspace }}/libbitcoin-node/src/*" --output-file coverage.info
 
       - name: Coveralls.io upload
         if: ${{ matrix.coverage == 'lcov' }}
diff --git a/builds/cmake/install-cmake.sh b/builds/cmake/install-cmake.sh
index 6f8eff21..d7ea94e1 100755
--- a/builds/cmake/install-cmake.sh
+++ b/builds/cmake/install-cmake.sh
@@ -12,6 +12,8 @@
 #                               Default: OFF
 # -Denable-avx512=<ON/OFF>    Use Intel AVX512 intrinsics.
 #                               Default: OFF
+# -Denable-ifma=<ON/OFF>      Use Intel AVX512 IFMA intrinsics.
+#                               Default: OFF
 # -Denable-sse41=<ON/OFF>     Use SSE4.1 hardware instructions.
 #                               Default: OFF
 # -Denable-shani=<ON/OFF>     Use Intel/ARM SHA Extensions.
@@ -1056,6 +1058,8 @@ help()
     msg "                              Default: OFF"
     msg "-Denable-avx512=<ON/OFF>    Use Intel AVX512 intrinsics."
     msg "                              Default: OFF"
+    msg "-Denable-ifma=<ON/OFF>      Use Intel AVX512 IFMA intrinsics."
+    msg "                              Default: OFF"
     msg "-Denable-sse41=<ON/OFF>     Use SSE4.1 hardware instructions."
     msg "                              Default: OFF"
     msg "-Denable-shani=<ON/OFF>     Use Intel/ARM SHA Extensions."
diff --git a/builds/cmake/install-presets.sh b/builds/cmake/install-presets.sh
index 39a732d6..5b672422 100755
--- a/builds/cmake/install-presets.sh
+++ b/builds/cmake/install-presets.sh
@@ -12,6 +12,8 @@
 #                               Default: OFF
 # -Denable-avx512=<ON/OFF>    Use Intel AVX512 intrinsics.
 #                               Default: OFF
+# -Denable-ifma=<ON/OFF>      Use Intel AVX512 IFMA intrinsics.
+#                               Default: OFF
 # -Denable-sse41=<ON/OFF>     Use SSE4.1 hardware instructions.
 #                               Default: OFF
 # -Denable-shani=<ON/OFF>     Use Intel/ARM SHA Extensions.
@@ -1134,6 +1136,8 @@ help()
     msg "                              Default: OFF"
     msg "-Denable-avx512=<ON/OFF>    Use Intel AVX512 intrinsics."
     msg "                              Default: OFF"
+    msg "-Denable-ifma=<ON/OFF>      Use Intel AVX512 IFMA intrinsics."
+    msg "                              Default: OFF"
     msg "-Denable-sse41=<ON/OFF>     Use SSE4.1 hardware instructions."
     msg "                              Default: OFF"
     msg "-Denable-shani=<ON/OFF>     Use Intel/ARM SHA Extensions."
diff --git a/builds/gnu/install-gnu.sh b/builds/gnu/install-gnu.sh
index 88acc5f5..d1b8d055 100755
--- a/builds/gnu/install-gnu.sh
+++ b/builds/gnu/install-gnu.sh
@@ -12,6 +12,8 @@
 #                               Default: --disable-avx2
 # --<enable/disable>-avx512   Use Intel AVX512 intrinsics.
 #                               Default: --disable-avx512
+# --<enable/disable>-ifma     Use Intel AVX512 IFMA intrinsics.
+#                               Default: --disable-ifma
 # --<enable/disable>-sse41    Use SSE4.1 hardware instructions.
 #                               Default: --disable-sse41
 # --<enable/disable>-shani    Use Intel/ARM SHA Extensions.
@@ -1291,6 +1293,8 @@ help()
     msg "                              Default: --disable-avx2"
     msg "--<enable/disable>-avx512   Use Intel AVX512 intrinsics."
     msg "                              Default: --disable-avx512"
+    msg "--<enable/disable>-ifma     Use Intel AVX512 IFMA intrinsics."
+    msg "                              Default: --disable-ifma"
     msg "--<enable/disable>-sse41    Use SSE4.1 hardware instructions."
     msg "                              Default: --disable-sse41"
     msg "--<enable/disable>-shani    Use Intel/ARM SHA Extensions."
diff --git a/builds/msvc/build-msvc.cmd b/builds/msvc/build-msvc.cmd
index bd8b8b43..ead06757 100644
--- a/builds/msvc/build-msvc.cmd
+++ b/builds/msvc/build-msvc.cmd
@@ -13,6 +13,7 @@ REM
 REM Script options:
 REM --enable-avx2               Use Intel AVX2 intrinsics.
 REM --enable-avx512             Use Intel AVX512 intrinsics.
+REM --enable-ifma               Use Intel AVX512 IFMA intrinsics.
 REM --enable-sse41              Use SSE4.1 hardware instructions.
 REM --enable-shani              Use Intel/ARM SHA Extensions.
 REM --enable-crypto             Use ARM Crypto Extensions.
@@ -249,6 +250,12 @@ if "!libbitcoin_node_TAG!" == "" (
         ) else (
             set "libbitcoin-system_PARAMS=!libbitcoin-system_PARAMS! /p:Option-arch=AdvancedVectorExtensions512"
         )
+    ) else if "%~1" == "--enable-ifma" (
+        if "!libbitcoin-system_PARAMS!" == "" (
+            set "libbitcoin-system_PARAMS=/p:Option-ifma=true"
+        ) else (
+            set "libbitcoin-system_PARAMS=!libbitcoin-system_PARAMS! /p:Option-ifma=true"
+        )
     ) else if "%~1" == "--enable-sse41" (
         if "!libbitcoin-system_PARAMS!" == "" (
             set "libbitcoin-system_PARAMS=/p:Option-arch=AdvancedVectorExtensions"
@@ -512,6 +519,7 @@ if "!libbitcoin_node_TAG!" == "" (
     call :msg "Script options:"
     call :msg "--enable-avx2               Use Intel AVX2 intrinsics."
     call :msg "--enable-avx512             Use Intel AVX512 intrinsics."
+    call :msg "--enable-ifma               Use Intel AVX512 IFMA intrinsics."
     call :msg "--enable-sse41              Use SSE4.1 hardware instructions."
     call :msg "--enable-shani              Use Intel/ARM SHA Extensions."
     call :msg "--enable-crypto             Use ARM Crypto Extensions."
diff --git a/builds/msvc/properties/Release.props b/builds/msvc/properties/Release.props
index 9fc03897..d7482af8 100644
--- a/builds/msvc/properties/Release.props
+++ b/builds/msvc/properties/Release.props
@@ -35,8 +35,6 @@
       <Optimization>MaxSpeed</Optimization>
 
       <!-- Literal (not macro) values retain property page presentation text. -->
-      <EnableEnhancedInstructionSet Condition="'$(Option-arch)' == 'NotSet'">NotSet</EnableEnhancedInstructionSet>
-      <EnableEnhancedInstructionSet Condition="'$(Option-arch)' == 'NoExtensions'">NoExtensions</EnableEnhancedInstructionSet>
       <EnableEnhancedInstructionSet Condition="'$(Option-arch)' == 'StreamingSIMDExtensions'">StreamingSIMDExtensions</EnableEnhancedInstructionSet>
       <EnableEnhancedInstructionSet Condition="'$(Option-arch)' == 'StreamingSIMDExtensions2'">StreamingSIMDExtensions2</EnableEnhancedInstructionSet>
       <EnableEnhancedInstructionSet Condition="'$(Option-arch)' == 'AdvancedVectorExtensions'">AdvancedVectorExtensions</EnableEnhancedInstructionSet>
diff --git a/builds/msvc/vs2026/libbitcoin-node-test/libbitcoin-node-test.vcxproj b/builds/msvc/vs2026/libbitcoin-node-test/libbitcoin-node-test.vcxproj
index b4bbe735..27562ec3 100644
--- a/builds/msvc/vs2026/libbitcoin-node-test/libbitcoin-node-test.vcxproj
+++ b/builds/msvc/vs2026/libbitcoin-node-test/libbitcoin-node-test.vcxproj
@@ -13,30 +13,6 @@
     <ProjectName>libbitcoin-node-test</ProjectName>
   </PropertyGroup>
   <ItemGroup Label="ProjectConfigurations">
-    <ProjectConfiguration Include="DebugDEXE|ARM">
-      <Configuration>DebugDEXE</Configuration>
-      <Platform>ARM</Platform>
-    </ProjectConfiguration>
-    <ProjectConfiguration Include="ReleaseDEXE|ARM">
-      <Configuration>ReleaseDEXE</Configuration>
-      <Platform>ARM</Platform>
-    </ProjectConfiguration>
-    <ProjectConfiguration Include="DebugLEXE|ARM">
-      <Configuration>DebugLEXE</Configuration>
-      <Platform>ARM</Platform>
-    </ProjectConfiguration>
-    <ProjectConfiguration Include="ReleaseLEXE|ARM">
-      <Configuration>ReleaseLEXE</Configuration>
-      <Platform>ARM</Platform>
-    </ProjectConfiguration>
-    <ProjectConfiguration Include="DebugSEXE|ARM">
-      <Configuration>DebugSEXE</Configuration>
-      <Platform>ARM</Platform>
-    </ProjectConfiguration>
-    <ProjectConfiguration Include="ReleaseSEXE|ARM">
-      <Configuration>ReleaseSEXE</Configuration>
-      <Platform>ARM</Platform>
-    </ProjectConfiguration>
     <ProjectConfiguration Include="DebugDEXE|ARM64">
       <Configuration>DebugDEXE</Configuration>
       <Platform>ARM64</Platform>
diff --git a/builds/msvc/vs2026/libbitcoin-node.sln b/builds/msvc/vs2026/libbitcoin-node.sln
index f94a45f0..947beb4d 100644
--- a/builds/msvc/vs2026/libbitcoin-node.sln
+++ b/builds/msvc/vs2026/libbitcoin-node.sln
@@ -9,8 +9,6 @@ Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "libbitcoin-node-test", "lib
 EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
-		StaticDebug|ARM = StaticDebug|ARM
-		StaticRelease|ARM = StaticRelease|ARM
 		StaticDebug|ARM64 = StaticDebug|ARM64
 		StaticRelease|ARM64 = StaticRelease|ARM64
 		StaticDebug|Win32 = StaticDebug|Win32
@@ -19,10 +17,6 @@ Global
 		StaticRelease|x64 = StaticRelease|x64
 	EndGlobalSection
 	GlobalSection(ProjectConfigurationPlatforms) = postSolution
-		{5FFB5F52-0772-4404-BB2F-39BE5F82A158}.StaticDebug|ARM.ActiveCfg = DebugLIB|ARM
-		{5FFB5F52-0772-4404-BB2F-39BE5F82A158}.StaticDebug|ARM.Build.0 = DebugLIB|ARM
-		{5FFB5F52-0772-4404-BB2F-39BE5F82A158}.StaticRelease|ARM.ActiveCfg = ReleaseLIB|ARM
-		{5FFB5F52-0772-4404-BB2F-39BE5F82A158}.StaticRelease|ARM.Build.0 = ReleaseLIB|ARM
 		{5FFB5F52-0772-4404-BB2F-39BE5F82A158}.StaticDebug|ARM64.ActiveCfg = DebugLIB|ARM64
 		{5FFB5F52-0772-4404-BB2F-39BE5F82A158}.StaticDebug|ARM64.Build.0 = DebugLIB|ARM64
 		{5FFB5F52-0772-4404-BB2F-39BE5F82A158}.StaticRelease|ARM64.ActiveCfg = ReleaseLIB|ARM64
@@ -35,10 +29,6 @@ Global
 		{5FFB5F52-0772-4404-BB2F-39BE5F82A158}.StaticDebug|x64.Build.0 = DebugLIB|x64
 		{5FFB5F52-0772-4404-BB2F-39BE5F82A158}.StaticRelease|x64.ActiveCfg = ReleaseLIB|x64
 		{5FFB5F52-0772-4404-BB2F-39BE5F82A158}.StaticRelease|x64.Build.0 = ReleaseLIB|x64
-		{4BD50864-D3BC-4F64-AEBB-DDEB8A622FA8}.StaticDebug|ARM.ActiveCfg = DebugSEXE|ARM
-		{4BD50864-D3BC-4F64-AEBB-DDEB8A622FA8}.StaticDebug|ARM.Build.0 = DebugSEXE|ARM
-		{4BD50864-D3BC-4F64-AEBB-DDEB8A622FA8}.StaticRelease|ARM.ActiveCfg = ReleaseSEXE|ARM
-		{4BD50864-D3BC-4F64-AEBB-DDEB8A622FA8}.StaticRelease|ARM.Build.0 = ReleaseSEXE|ARM
 		{4BD50864-D3BC-4F64-AEBB-DDEB8A622FA8}.StaticDebug|ARM64.ActiveCfg = DebugSEXE|ARM64
 		{4BD50864-D3BC-4F64-AEBB-DDEB8A622FA8}.StaticDebug|ARM64.Build.0 = DebugSEXE|ARM64
 		{4BD50864-D3BC-4F64-AEBB-DDEB8A622FA8}.StaticRelease|ARM64.ActiveCfg = ReleaseSEXE|ARM64
diff --git a/builds/msvc/vs2026/libbitcoin-node/libbitcoin-node.vcxproj b/builds/msvc/vs2026/libbitcoin-node/libbitcoin-node.vcxproj
index e1463564..9093cd0e 100644
--- a/builds/msvc/vs2026/libbitcoin-node/libbitcoin-node.vcxproj
+++ b/builds/msvc/vs2026/libbitcoin-node/libbitcoin-node.vcxproj
@@ -12,30 +12,6 @@
     <ProjectName>libbitcoin-node</ProjectName>
   </PropertyGroup>
   <ItemGroup Label="ProjectConfigurations">
-    <ProjectConfiguration Include="DebugDLL|ARM">
-      <Configuration>DebugDLL</Configuration>
-      <Platform>ARM</Platform>
-    </ProjectConfiguration>
-    <ProjectConfiguration Include="ReleaseDLL|ARM">
-      <Configuration>ReleaseDLL</Configuration>
-      <Platform>ARM</Platform>
-    </ProjectConfiguration>
-    <ProjectConfiguration Include="DebugLTCG|ARM">
-      <Configuration>DebugLTCG</Configuration>
-      <Platform>ARM</Platform>
-    </ProjectConfiguration>
-    <ProjectConfiguration Include="ReleaseLTCG|ARM">
-      <Configuration>ReleaseLTCG</Configuration>
-      <Platform>ARM</Platform>
-    </ProjectConfiguration>
-    <ProjectConfiguration Include="DebugLIB|ARM">
-      <Configuration>DebugLIB</Configuration>
-      <Platform>ARM</Platform>
-    </ProjectConfiguration>
-    <ProjectConfiguration Include="ReleaseLIB|ARM">
-      <Configuration>ReleaseLIB</Configuration>
-      <Platform>ARM</Platform>
-    </ProjectConfiguration>
     <ProjectConfiguration Include="DebugDLL|ARM64">
       <Configuration>DebugDLL</Configuration>
       <Platform>ARM64</Platform>
diff --git a/builds/msvc/vs2026/libbitcoin-system.import.props b/builds/msvc/vs2026/libbitcoin-system.import.props
index 6aaae20b..7f9ea8cf 100644
--- a/builds/msvc/vs2026/libbitcoin-system.import.props
+++ b/builds/msvc/vs2026/libbitcoin-system.import.props
@@ -21,6 +21,7 @@
     <!--<Option-256>true</Option-256>-->
     <!--<Option-128>true</Option-128>-->
     <Option-sha Condition="'$(Option-sha)' == ''">false</Option-sha>
+    <Option-ifma Condition="'$(Option-ifma)' == ''">false</Option-ifma>
     <Option-secp256k1 Condition="'$(Option-secp256k1)' == ''">true</Option-secp256k1>
     <Option-ultrafast Condition="'$(Option-ultrafast)' == ''">false</Option-ultrafast>
     <Option-cuda Condition="'$(Option-cuda)' == ''">false</Option-cuda>
@@ -39,6 +40,7 @@
 
   <Target Name="SystemOptionInfo" BeforeTargets="PrepareForBuild">
     <Message Text="Option-sha        : $(Option-sha)" Importance="high"/>
+    <Message Text="Option-ifma       : $(Option-ifma)" Importance="high"/>
     <Message Text="Option-secp256k1  : $(Option-secp256k1)" Importance="high"/>
     <Message Text="Option-ultrafast  : $(Option-ultrafast)" Importance="high"/>
     <Message Text="Option-cuda       : $(Option-cuda)" Importance="high"/>
@@ -62,6 +64,7 @@
       <!-- Enable use of CPU intrinsics. -->
       <!-- Eventually these options will be used to select SVE levels. -->
       <PreprocessorDefinitions Condition="'$(Option-sha)' == 'true'">WITH_SHA;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <PreprocessorDefinitions Condition="'$(Option-ifma)' == 'true'">WITH_IFMA;%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <!--<PreprocessorDefinitions Condition="'$(Option-512)' == 'true'">WITH_512;%(PreprocessorDefinitions)</PreprocessorDefinitions>-->
       <!--<PreprocessorDefinitions Condition="'$(Option-256)' == 'true'">WITH_256;%(PreprocessorDefinitions)</PreprocessorDefinitions>-->
       <!--<PreprocessorDefinitions Condition="'$(Option-128)' == 'true'">WITH_128;%(PreprocessorDefinitions)</PreprocessorDefinitions>-->
diff --git a/builds/msvc/vs2026/libbitcoin-system.import.xml b/builds/msvc/vs2026/libbitcoin-system.import.xml
index 1501f8df..e43fb528 100644
--- a/builds/msvc/vs2026/libbitcoin-system.import.xml
+++ b/builds/msvc/vs2026/libbitcoin-system.import.xml
@@ -20,6 +20,7 @@
       <!--<Category Name="256" DisplayName="256" />-->
       <!--<Category Name="128" DisplayName="128" />-->
       <Category Name="sha" DisplayName="sha" />
+      <Category Name="ifma" DisplayName="ifma" />
     </Rule.Categories>
     <Rule.DataSource>
       <DataSource Persistence="ProjectFile" ItemType="" />
@@ -28,6 +29,10 @@
       <EnumValue Name="false" DisplayName="No" />
       <EnumValue Name="true" DisplayName="Yes" />
     </EnumProperty>
+    <EnumProperty Name="Option-ifma" DisplayName="Enable AVX512 IFMA Multiplication" Description="Requires AVX512 IFMA (xcpu) CPU and /arch:AVX512." Category="ifma">
+      <EnumValue Name="false" DisplayName="No" />
+      <EnumValue Name="true" DisplayName="Yes" />
+    </EnumProperty>
     <!--<EnumProperty Name="Option-512" DisplayName="Enable 512 Bit Vectorization" Description="Requires AVX512 (xcpu) or SVE (arm) CPU." Category="512">
       <EnumValue Name="false" DisplayName="No" />
       <EnumValue Name="true" DisplayName="Yes" />