diff --git a/builds/gnu/test_runner.sh b/builds/gnu/test_runner.sh
index d1c7604a..f5a9d5a5 100755
--- a/builds/gnu/test_runner.sh
+++ b/builds/gnu/test_runner.sh
@@ -8,13 +8,7 @@
 
 # Define tests and options.
 #==============================================================================
-BOOST_UNIT_TEST_OPTIONS=\
-    "--log_level=warning "\
-    "--show_progress=no "\
-    "--detect_memory_leak=0 "\
-    "--report_level=no "\
-    "--build-info=yes "\
-    "--run_tests=*"
+BOOST_UNIT_TEST_OPTIONS="--log_level=warning --show_progress=no --detect_memory_leak=0 --report_level=no --build_info=yes --run_test=*"
 
 # Run tests.
 #==============================================================================
diff --git a/builds/msvc/vs2022/bs/bs.props b/builds/msvc/vs2022/bs/bs.props
index 6df6b756..4c4dd891 100644
--- a/builds/msvc/vs2022/bs/bs.props
+++ b/builds/msvc/vs2022/bs/bs.props
@@ -57,9 +57,6 @@
     <Linkage-libbitcoin-node>static</Linkage-libbitcoin-node>
     <Linkage-libbitcoin-server>static</Linkage-libbitcoin-server>
   </PropertyGroup>
-  <PropertyGroup Condition="'$(Option-ultrafast)' == 'true' And '$(Option-cuda)' == 'true'">
-    <Linkage-ultrafast>cuda</Linkage-ultrafast>
-  </PropertyGroup>
 
   <!-- Messages -->
 
diff --git a/builds/msvc/vs2022/libbitcoin-server-test/libbitcoin-server-test.props b/builds/msvc/vs2022/libbitcoin-server-test/libbitcoin-server-test.props
index 5f985f2f..812ea36a 100644
--- a/builds/msvc/vs2022/libbitcoin-server-test/libbitcoin-server-test.props
+++ b/builds/msvc/vs2022/libbitcoin-server-test/libbitcoin-server-test.props
@@ -59,9 +59,6 @@
     <Linkage-libbitcoin-node>static</Linkage-libbitcoin-node>
     <Linkage-libbitcoin-server>static</Linkage-libbitcoin-server>
   </PropertyGroup>
-  <PropertyGroup Condition="'$(Option-ultrafast)' == 'true' And '$(Option-cuda)' == 'true'">
-    <Linkage-ultrafast>cuda</Linkage-ultrafast>
-  </PropertyGroup>
 
   <!-- Messages -->
 
diff --git a/builds/msvc/vs2022/libbitcoin-server/libbitcoin-server.props b/builds/msvc/vs2022/libbitcoin-server/libbitcoin-server.props
index 147a6b19..7fa708bc 100644
--- a/builds/msvc/vs2022/libbitcoin-server/libbitcoin-server.props
+++ b/builds/msvc/vs2022/libbitcoin-server/libbitcoin-server.props
@@ -61,9 +61,6 @@
     <Linkage-libbitcoin-network>static</Linkage-libbitcoin-network>
     <Linkage-libbitcoin-node>static</Linkage-libbitcoin-node>
   </PropertyGroup>
-  <PropertyGroup Condition="'$(Option-ultrafast)' == 'true' And '$(Option-cuda)' == 'true'">
-    <Linkage-ultrafast>cuda</Linkage-ultrafast>
-  </PropertyGroup>
 
   <!-- Messages -->
 
diff --git a/builds/msvc/vs2026/bs/bs.props b/builds/msvc/vs2026/bs/bs.props
index 6df6b756..4c4dd891 100644
--- a/builds/msvc/vs2026/bs/bs.props
+++ b/builds/msvc/vs2026/bs/bs.props
@@ -57,9 +57,6 @@
     <Linkage-libbitcoin-node>static</Linkage-libbitcoin-node>
     <Linkage-libbitcoin-server>static</Linkage-libbitcoin-server>
   </PropertyGroup>
-  <PropertyGroup Condition="'$(Option-ultrafast)' == 'true' And '$(Option-cuda)' == 'true'">
-    <Linkage-ultrafast>cuda</Linkage-ultrafast>
-  </PropertyGroup>
 
   <!-- Messages -->
 
diff --git a/builds/msvc/vs2026/bs/bs.vcxproj b/builds/msvc/vs2026/bs/bs.vcxproj
index 6f3608ac..c516d1cb 100644
--- a/builds/msvc/vs2026/bs/bs.vcxproj
+++ b/builds/msvc/vs2026/bs/bs.vcxproj
@@ -171,7 +171,7 @@
     <Import Project="$(NuGetPackageRoot)libbitcoin-boost_thread-vc145.1.91.0\build\libbitcoin-boost_thread-vc145.targets" Condition="Exists('$(NuGetPackageRoot)libbitcoin-boost_thread-vc145.1.91.0\build\libbitcoin-boost_thread-vc145.targets')" />
     <Import Project="$(NuGetPackageRoot)libbitcoin-boost_url-vc145.1.91.0\build\libbitcoin-boost_url-vc145.targets" Condition="Exists('$(NuGetPackageRoot)libbitcoin-boost_url-vc145.1.91.0\build\libbitcoin-boost_url-vc145.targets')" />
     <Import Project="$(NuGetPackageRoot)secp256k1_vc145.0.6.1.2\build\native\secp256k1_vc145.targets" Condition="Exists('$(NuGetPackageRoot)secp256k1_vc145.0.6.1.2\build\native\secp256k1_vc145.targets')" />
-    <Import Project="$(NuGetPackageRoot)UltrafastSecp256k1-vc145.4.4.0.4\build\native\UltrafastSecp256k1-vc145.targets" Condition="Exists('$(NuGetPackageRoot)UltrafastSecp256k1-vc145.4.4.0.4\build\native\UltrafastSecp256k1-vc145.targets')" />
+    <Import Project="$(NuGetPackageRoot)UltrafastSecp256k1-vc145.4.5.0.0\build\native\UltrafastSecp256k1-vc145.targets" Condition="Exists('$(NuGetPackageRoot)UltrafastSecp256k1-vc145.4.5.0.0\build\native\UltrafastSecp256k1-vc145.targets')" />
   </ImportGroup>
   <Target Name="EnsureNuGetPackageBuildImports" BeforeTargets="PrepareForBuild">
     <PropertyGroup>
@@ -186,7 +186,7 @@
     <Error Condition="!Exists('$(NuGetPackageRoot)libbitcoin-boost_thread-vc145.1.91.0\build\libbitcoin-boost_thread-vc145.targets')" Text="$([System.String]::Format('$(ErrorText)', '$(NuGetPackageRoot)libbitcoin-boost_thread-vc145.1.91.0\build\libbitcoin-boost_thread-vc145.targets'))" />
     <Error Condition="!Exists('$(NuGetPackageRoot)libbitcoin-boost_url-vc145.1.91.0\build\libbitcoin-boost_url-vc145.targets')" Text="$([System.String]::Format('$(ErrorText)', '$(NuGetPackageRoot)libbitcoin-boost_url-vc145.1.91.0\build\libbitcoin-boost_url-vc145.targets'))" />
     <Error Condition="!Exists('$(NuGetPackageRoot)secp256k1_vc145.0.6.1.2\build\native\secp256k1_vc145.targets')" Text="$([System.String]::Format('$(ErrorText)', '$(NuGetPackageRoot)secp256k1_vc145.0.6.1.2\build\native\secp256k1_vc145.targets'))" />
-    <Error Condition="!Exists('$(NuGetPackageRoot)UltrafastSecp256k1-vc145.4.4.0.4\build\native\UltrafastSecp256k1-vc145.targets')" Text="$([System.String]::Format('$(ErrorText)', '$(NuGetPackageRoot)UltrafastSecp256k1-vc145.4.4.0.4\build\native\UltrafastSecp256k1-vc145.targets'))" />
+    <Error Condition="!Exists('$(NuGetPackageRoot)UltrafastSecp256k1-vc145.4.5.0.0\build\native\UltrafastSecp256k1-vc145.targets')" Text="$([System.String]::Format('$(ErrorText)', '$(NuGetPackageRoot)UltrafastSecp256k1-vc145.4.5.0.0\build\native\UltrafastSecp256k1-vc145.targets'))" />
   </Target>
   <ItemGroup>
     <ProjectReference Include="..\libbitcoin-server\libbitcoin-server.vcxproj">
diff --git a/builds/msvc/vs2026/bs/packages.config b/builds/msvc/vs2026/bs/packages.config
index 70ab1ee8..3b11f99d 100644
--- a/builds/msvc/vs2026/bs/packages.config
+++ b/builds/msvc/vs2026/bs/packages.config
@@ -6,7 +6,7 @@
  |
  -->
 <packages>
-  <package id="UltrafastSecp256k1-vc145" version="4.4.0.4" targetFramework="Native" />
+  <package id="UltrafastSecp256k1-vc145" version="4.5.0.0" targetFramework="Native" />
   <package id="libbitcoin-boost" version="1.91.0" targetFramework="Native" />
   <package id="libbitcoin-boost_container-vc145" version="1.91.0" targetFramework="Native" />
   <package id="libbitcoin-boost_iostreams-vc145" version="1.91.0" targetFramework="Native" />
diff --git a/builds/msvc/vs2026/libbitcoin-server-test/libbitcoin-server-test.props b/builds/msvc/vs2026/libbitcoin-server-test/libbitcoin-server-test.props
index 5f985f2f..812ea36a 100644
--- a/builds/msvc/vs2026/libbitcoin-server-test/libbitcoin-server-test.props
+++ b/builds/msvc/vs2026/libbitcoin-server-test/libbitcoin-server-test.props
@@ -59,9 +59,6 @@
     <Linkage-libbitcoin-node>static</Linkage-libbitcoin-node>
     <Linkage-libbitcoin-server>static</Linkage-libbitcoin-server>
   </PropertyGroup>
-  <PropertyGroup Condition="'$(Option-ultrafast)' == 'true' And '$(Option-cuda)' == 'true'">
-    <Linkage-ultrafast>cuda</Linkage-ultrafast>
-  </PropertyGroup>
 
   <!-- Messages -->
 
diff --git a/builds/msvc/vs2026/libbitcoin-server-test/libbitcoin-server-test.vcxproj b/builds/msvc/vs2026/libbitcoin-server-test/libbitcoin-server-test.vcxproj
index f2d54f49..4b64d228 100644
--- a/builds/msvc/vs2026/libbitcoin-server-test/libbitcoin-server-test.vcxproj
+++ b/builds/msvc/vs2026/libbitcoin-server-test/libbitcoin-server-test.vcxproj
@@ -187,7 +187,7 @@
     <Import Project="$(NuGetPackageRoot)libbitcoin-boost_unit_test_framework-vc145.1.91.0\build\libbitcoin-boost_unit_test_framework-vc145.targets" Condition="Exists('$(NuGetPackageRoot)libbitcoin-boost_unit_test_framework-vc145.1.91.0\build\libbitcoin-boost_unit_test_framework-vc145.targets')" />
     <Import Project="$(NuGetPackageRoot)libbitcoin-boost_url-vc145.1.91.0\build\libbitcoin-boost_url-vc145.targets" Condition="Exists('$(NuGetPackageRoot)libbitcoin-boost_url-vc145.1.91.0\build\libbitcoin-boost_url-vc145.targets')" />
     <Import Project="$(NuGetPackageRoot)secp256k1_vc145.0.6.1.2\build\native\secp256k1_vc145.targets" Condition="Exists('$(NuGetPackageRoot)secp256k1_vc145.0.6.1.2\build\native\secp256k1_vc145.targets')" />
-    <Import Project="$(NuGetPackageRoot)UltrafastSecp256k1-vc145.4.4.0.4\build\native\UltrafastSecp256k1-vc145.targets" Condition="Exists('$(NuGetPackageRoot)UltrafastSecp256k1-vc145.4.4.0.4\build\native\UltrafastSecp256k1-vc145.targets')" />
+    <Import Project="$(NuGetPackageRoot)UltrafastSecp256k1-vc145.4.5.0.0\build\native\UltrafastSecp256k1-vc145.targets" Condition="Exists('$(NuGetPackageRoot)UltrafastSecp256k1-vc145.4.5.0.0\build\native\UltrafastSecp256k1-vc145.targets')" />
   </ImportGroup>
   <Target Name="EnsureNuGetPackageBuildImports" BeforeTargets="PrepareForBuild">
     <PropertyGroup>
@@ -203,7 +203,7 @@
     <Error Condition="!Exists('$(NuGetPackageRoot)libbitcoin-boost_unit_test_framework-vc145.1.91.0\build\libbitcoin-boost_unit_test_framework-vc145.targets')" Text="$([System.String]::Format('$(ErrorText)', '$(NuGetPackageRoot)libbitcoin-boost_unit_test_framework-vc145.1.91.0\build\libbitcoin-boost_unit_test_framework-vc145.targets'))" />
     <Error Condition="!Exists('$(NuGetPackageRoot)libbitcoin-boost_url-vc145.1.91.0\build\libbitcoin-boost_url-vc145.targets')" Text="$([System.String]::Format('$(ErrorText)', '$(NuGetPackageRoot)libbitcoin-boost_url-vc145.1.91.0\build\libbitcoin-boost_url-vc145.targets'))" />
     <Error Condition="!Exists('$(NuGetPackageRoot)secp256k1_vc145.0.6.1.2\build\native\secp256k1_vc145.targets')" Text="$([System.String]::Format('$(ErrorText)', '$(NuGetPackageRoot)secp256k1_vc145.0.6.1.2\build\native\secp256k1_vc145.targets'))" />
-    <Error Condition="!Exists('$(NuGetPackageRoot)UltrafastSecp256k1-vc145.4.4.0.4\build\native\UltrafastSecp256k1-vc145.targets')" Text="$([System.String]::Format('$(ErrorText)', '$(NuGetPackageRoot)UltrafastSecp256k1-vc145.4.4.0.4\build\native\UltrafastSecp256k1-vc145.targets'))" />
+    <Error Condition="!Exists('$(NuGetPackageRoot)UltrafastSecp256k1-vc145.4.5.0.0\build\native\UltrafastSecp256k1-vc145.targets')" Text="$([System.String]::Format('$(ErrorText)', '$(NuGetPackageRoot)UltrafastSecp256k1-vc145.4.5.0.0\build\native\UltrafastSecp256k1-vc145.targets'))" />
   </Target>
   <ItemGroup>
     <ProjectReference Include="..\libbitcoin-server\libbitcoin-server.vcxproj">
diff --git a/builds/msvc/vs2026/libbitcoin-server-test/packages.config b/builds/msvc/vs2026/libbitcoin-server-test/packages.config
index 929828e8..faeba215 100644
--- a/builds/msvc/vs2026/libbitcoin-server-test/packages.config
+++ b/builds/msvc/vs2026/libbitcoin-server-test/packages.config
@@ -6,7 +6,7 @@
  |
  -->
 <packages>
-  <package id="UltrafastSecp256k1-vc145" version="4.4.0.4" targetFramework="Native" />
+  <package id="UltrafastSecp256k1-vc145" version="4.5.0.0" targetFramework="Native" />
   <package id="libbitcoin-boost" version="1.91.0" targetFramework="Native" />
   <package id="libbitcoin-boost_container-vc145" version="1.91.0" targetFramework="Native" />
   <package id="libbitcoin-boost_iostreams-vc145" version="1.91.0" targetFramework="Native" />
diff --git a/builds/msvc/vs2026/libbitcoin-server/libbitcoin-server.props b/builds/msvc/vs2026/libbitcoin-server/libbitcoin-server.props
index 147a6b19..7fa708bc 100644
--- a/builds/msvc/vs2026/libbitcoin-server/libbitcoin-server.props
+++ b/builds/msvc/vs2026/libbitcoin-server/libbitcoin-server.props
@@ -61,9 +61,6 @@
     <Linkage-libbitcoin-network>static</Linkage-libbitcoin-network>
     <Linkage-libbitcoin-node>static</Linkage-libbitcoin-node>
   </PropertyGroup>
-  <PropertyGroup Condition="'$(Option-ultrafast)' == 'true' And '$(Option-cuda)' == 'true'">
-    <Linkage-ultrafast>cuda</Linkage-ultrafast>
-  </PropertyGroup>
 
   <!-- Messages -->
 
diff --git a/builds/msvc/vs2026/libbitcoin-server/libbitcoin-server.vcxproj b/builds/msvc/vs2026/libbitcoin-server/libbitcoin-server.vcxproj
index 63667347..fd2bb81a 100644
--- a/builds/msvc/vs2026/libbitcoin-server/libbitcoin-server.vcxproj
+++ b/builds/msvc/vs2026/libbitcoin-server/libbitcoin-server.vcxproj
@@ -229,7 +229,7 @@
     <Import Project="$(NuGetPackageRoot)libbitcoin-boost_thread-vc145.1.91.0\build\libbitcoin-boost_thread-vc145.targets" Condition="Exists('$(NuGetPackageRoot)libbitcoin-boost_thread-vc145.1.91.0\build\libbitcoin-boost_thread-vc145.targets')" />
     <Import Project="$(NuGetPackageRoot)libbitcoin-boost_url-vc145.1.91.0\build\libbitcoin-boost_url-vc145.targets" Condition="Exists('$(NuGetPackageRoot)libbitcoin-boost_url-vc145.1.91.0\build\libbitcoin-boost_url-vc145.targets')" />
     <Import Project="$(NuGetPackageRoot)secp256k1_vc145.0.6.1.2\build\native\secp256k1_vc145.targets" Condition="Exists('$(NuGetPackageRoot)secp256k1_vc145.0.6.1.2\build\native\secp256k1_vc145.targets')" />
-    <Import Project="$(NuGetPackageRoot)UltrafastSecp256k1-vc145.4.4.0.4\build\native\UltrafastSecp256k1-vc145.targets" Condition="Exists('$(NuGetPackageRoot)UltrafastSecp256k1-vc145.4.4.0.4\build\native\UltrafastSecp256k1-vc145.targets')" />
+    <Import Project="$(NuGetPackageRoot)UltrafastSecp256k1-vc145.4.5.0.0\build\native\UltrafastSecp256k1-vc145.targets" Condition="Exists('$(NuGetPackageRoot)UltrafastSecp256k1-vc145.4.5.0.0\build\native\UltrafastSecp256k1-vc145.targets')" />
   </ImportGroup>
   <Target Name="EnsureNuGetPackageBuildImports" BeforeTargets="PrepareForBuild">
     <PropertyGroup>
@@ -244,7 +244,7 @@
     <Error Condition="!Exists('$(NuGetPackageRoot)libbitcoin-boost_thread-vc145.1.91.0\build\libbitcoin-boost_thread-vc145.targets')" Text="$([System.String]::Format('$(ErrorText)', '$(NuGetPackageRoot)libbitcoin-boost_thread-vc145.1.91.0\build\libbitcoin-boost_thread-vc145.targets'))" />
     <Error Condition="!Exists('$(NuGetPackageRoot)libbitcoin-boost_url-vc145.1.91.0\build\libbitcoin-boost_url-vc145.targets')" Text="$([System.String]::Format('$(ErrorText)', '$(NuGetPackageRoot)libbitcoin-boost_url-vc145.1.91.0\build\libbitcoin-boost_url-vc145.targets'))" />
     <Error Condition="!Exists('$(NuGetPackageRoot)secp256k1_vc145.0.6.1.2\build\native\secp256k1_vc145.targets')" Text="$([System.String]::Format('$(ErrorText)', '$(NuGetPackageRoot)secp256k1_vc145.0.6.1.2\build\native\secp256k1_vc145.targets'))" />
-    <Error Condition="!Exists('$(NuGetPackageRoot)UltrafastSecp256k1-vc145.4.4.0.4\build\native\UltrafastSecp256k1-vc145.targets')" Text="$([System.String]::Format('$(ErrorText)', '$(NuGetPackageRoot)UltrafastSecp256k1-vc145.4.4.0.4\build\native\UltrafastSecp256k1-vc145.targets'))" />
+    <Error Condition="!Exists('$(NuGetPackageRoot)UltrafastSecp256k1-vc145.4.5.0.0\build\native\UltrafastSecp256k1-vc145.targets')" Text="$([System.String]::Format('$(ErrorText)', '$(NuGetPackageRoot)UltrafastSecp256k1-vc145.4.5.0.0\build\native\UltrafastSecp256k1-vc145.targets'))" />
   </Target>
   <ItemGroup>
     <Natvis Include="..\..\debug.natvis" />
diff --git a/builds/msvc/vs2026/libbitcoin-server/packages.config b/builds/msvc/vs2026/libbitcoin-server/packages.config
index 70ab1ee8..3b11f99d 100644
--- a/builds/msvc/vs2026/libbitcoin-server/packages.config
+++ b/builds/msvc/vs2026/libbitcoin-server/packages.config
@@ -6,7 +6,7 @@
  |
  -->
 <packages>
-  <package id="UltrafastSecp256k1-vc145" version="4.4.0.4" targetFramework="Native" />
+  <package id="UltrafastSecp256k1-vc145" version="4.5.0.0" targetFramework="Native" />
   <package id="libbitcoin-boost" version="1.91.0" targetFramework="Native" />
   <package id="libbitcoin-boost_container-vc145" version="1.91.0" targetFramework="Native" />
   <package id="libbitcoin-boost_iostreams-vc145" version="1.91.0" targetFramework="Native" />