diff --git a/builds/msvc/vs2013/libbitcoin-consensus-test/libbitcoin-consensus-test.vcxproj b/builds/msvc/vs2013/libbitcoin-consensus-test/libbitcoin-consensus-test.vcxproj
index 510b52c4..ca2996e2 100644
--- a/builds/msvc/vs2013/libbitcoin-consensus-test/libbitcoin-consensus-test.vcxproj
+++ b/builds/msvc/vs2013/libbitcoin-consensus-test/libbitcoin-consensus-test.vcxproj
@@ -84,39 +84,17 @@
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
   <ImportGroup Label="ExtensionTargets" />
   <ImportGroup Label="ExtensionSettings">
+    <Import Project="$(NuGetPackageRoot)secp256k1_vc120.0.1.0.16\build\native\secp256k1_vc120.targets" Condition="Exists('$(NuGetPackageRoot)secp256k1_vc120.0.1.0.16\build\native\secp256k1_vc120.targets')" />
     <Import Project="$(NuGetPackageRoot)boost.1.57.0.0\build\native\boost.targets" Condition="Exists('$(NuGetPackageRoot)boost.1.57.0.0\build\native\boost.targets')" />
-    <Import Project="$(NuGetPackageRoot)boost_chrono-vc120.1.57.0.0\build\native\boost_chrono-vc120.targets" Condition="Exists('$(NuGetPackageRoot)boost_chrono-vc120.1.57.0.0\build\native\boost_chrono-vc120.targets')" />
-    <Import Project="$(NuGetPackageRoot)boost_date_time-vc120.1.57.0.0\build\native\boost_date_time-vc120.targets" Condition="Exists('$(NuGetPackageRoot)boost_date_time-vc120.1.57.0.0\build\native\boost_date_time-vc120.targets')" />
-    <Import Project="$(NuGetPackageRoot)boost_filesystem-vc120.1.57.0.0\build\native\boost_filesystem-vc120.targets" Condition="Exists('$(NuGetPackageRoot)boost_filesystem-vc120.1.57.0.0\build\native\boost_filesystem-vc120.targets')" />
-    <Import Project="$(NuGetPackageRoot)boost_iostreams-vc120.1.57.0.0\build\native\boost_iostreams-vc120.targets" Condition="Exists('$(NuGetPackageRoot)boost_iostreams-vc120.1.57.0.0\build\native\boost_iostreams-vc120.targets')" />
-    <Import Project="$(NuGetPackageRoot)boost_locale-vc120.1.57.0.0\build\native\boost_locale-vc120.targets" Condition="Exists('$(NuGetPackageRoot)boost_locale-vc120.1.57.0.0\build\native\boost_locale-vc120.targets')" />
-    <Import Project="$(NuGetPackageRoot)boost_log-vc120.1.57.0.0\build\native\boost_log-vc120.targets" Condition="Exists('$(NuGetPackageRoot)boost_log-vc120.1.57.0.0\build\native\boost_log-vc120.targets')" />
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-    <Import Project="$(NuGetPackageRoot)boost_program_options-vc120.1.57.0.0\build\native\boost_program_options-vc120.targets" Condition="Exists('$(NuGetPackageRoot)boost_program_options-vc120.1.57.0.0\build\native\boost_program_options-vc120.targets')" />
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-    <Import Project="$(NuGetPackageRoot)boost_system-vc120.1.57.0.0\build\native\boost_system-vc120.targets" Condition="Exists('$(NuGetPackageRoot)boost_system-vc120.1.57.0.0\build\native\boost_system-vc120.targets')" />
-    <Import Project="$(NuGetPackageRoot)boost_thread-vc120.1.57.0.0\build\native\boost_thread-vc120.targets" Condition="Exists('$(NuGetPackageRoot)boost_thread-vc120.1.57.0.0\build\native\boost_thread-vc120.targets')" />
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-    <Import Project="$(NuGetPackageRoot)secp256k1_vc120.0.1.0.16\build\native\secp256k1_vc120.targets" Condition="Exists('$(NuGetPackageRoot)secp256k1_vc120.0.1.0.16\build\native\secp256k1_vc120.targets')" />
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     </PropertyGroup>
+    <Error Condition="!Exists('$(NuGetPackageRoot)secp256k1_vc120.0.1.0.16\build\native\secp256k1_vc120.targets')" Text="$([System.String]::Format('$(ErrorText)', '$(NuGetPackageRoot)secp256k1_vc120.0.1.0.16\build\native\secp256k1_vc120.targets'))" />
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-    <Error Condition="!Exists('$(NuGetPackageRoot)boost_system-vc120.1.57.0.0\build\native\boost_system-vc120.targets')" Text="$([System.String]::Format('$(ErrorText)', '$(NuGetPackageRoot)boost_system-vc120.1.57.0.0\build\native\boost_system-vc120.targets'))" />
-    <Error Condition="!Exists('$(NuGetPackageRoot)boost_thread-vc120.1.57.0.0\build\native\boost_thread-vc120.targets')" Text="$([System.String]::Format('$(ErrorText)', '$(NuGetPackageRoot)boost_thread-vc120.1.57.0.0\build\native\boost_thread-vc120.targets'))" />
     <Error Condition="!Exists('$(NuGetPackageRoot)boost_unit_test_framework-vc120.1.57.0.0\build\native\boost_unit_test_framework-vc120.targets')" Text="$([System.String]::Format('$(ErrorText)', '$(NuGetPackageRoot)boost_unit_test_framework-vc120.1.57.0.0\build\native\boost_unit_test_framework-vc120.targets'))" />
-    <Error Condition="!Exists('$(NuGetPackageRoot)secp256k1_vc120.0.1.0.16\build\native\secp256k1_vc120.targets')" Text="$([System.String]::Format('$(ErrorText)', '$(NuGetPackageRoot)secp256k1_vc120.0.1.0.16\build\native\secp256k1_vc120.targets'))" />
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   <ItemGroup>
     <ProjectReference Include="..\libbitcoin-consensus\libbitcoin-consensus.vcxproj">
diff --git a/builds/msvc/vs2013/libbitcoin-consensus-test/packages.config b/builds/msvc/vs2013/libbitcoin-consensus-test/packages.config
index 9bd030b6..a26f9664 100644
--- a/builds/msvc/vs2013/libbitcoin-consensus-test/packages.config
+++ b/builds/msvc/vs2013/libbitcoin-consensus-test/packages.config
@@ -6,18 +6,7 @@
  |
  -->
 <packages>
+  <package id="secp256k1_vc120" version="0.1.0.16" targetFramework="Native" />
   <package id="boost" version="1.57.0.0" targetFramework="Native" />
-  <package id="boost_chrono-vc120" version="1.57.0.0" targetFramework="Native" />
-  <package id="boost_date_time-vc120" version="1.57.0.0" targetFramework="Native" />
-  <package id="boost_filesystem-vc120" version="1.57.0.0" targetFramework="Native" />
-  <package id="boost_iostreams-vc120" version="1.57.0.0" targetFramework="Native" />
-  <package id="boost_locale-vc120" version="1.57.0.0" targetFramework="Native" />
-  <package id="boost_log-vc120" version="1.57.0.0" targetFramework="Native" />
-  <package id="boost_log_setup-vc120" version="1.57.0.0" targetFramework="Native" />
-  <package id="boost_program_options-vc120" version="1.57.0.0" targetFramework="Native" />
-  <package id="boost_regex-vc120" version="1.57.0.0" targetFramework="Native" />
-  <package id="boost_system-vc120" version="1.57.0.0" targetFramework="Native" />
-  <package id="boost_thread-vc120" version="1.57.0.0" targetFramework="Native" />
   <package id="boost_unit_test_framework-vc120" version="1.57.0.0" targetFramework="Native" />
-  <package id="secp256k1_vc120" version="0.1.0.16" targetFramework="Native" />
 </packages>
diff --git a/builds/msvc/vs2013/libbitcoin-consensus/libbitcoin-consensus.vcxproj b/builds/msvc/vs2013/libbitcoin-consensus/libbitcoin-consensus.vcxproj
index d92c0ffd..1426f086 100644
--- a/builds/msvc/vs2013/libbitcoin-consensus/libbitcoin-consensus.vcxproj
+++ b/builds/msvc/vs2013/libbitcoin-consensus/libbitcoin-consensus.vcxproj
@@ -125,36 +125,12 @@
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
   <ImportGroup Label="ExtensionTargets" />
   <ImportGroup Label="ExtensionSettings">
-    <Import Project="$(NuGetPackageRoot)boost.1.57.0.0\build\native\boost.targets" Condition="Exists('$(NuGetPackageRoot)boost.1.57.0.0\build\native\boost.targets')" />
-    <Import Project="$(NuGetPackageRoot)boost_chrono-vc120.1.57.0.0\build\native\boost_chrono-vc120.targets" Condition="Exists('$(NuGetPackageRoot)boost_chrono-vc120.1.57.0.0\build\native\boost_chrono-vc120.targets')" />
-    <Import Project="$(NuGetPackageRoot)boost_date_time-vc120.1.57.0.0\build\native\boost_date_time-vc120.targets" Condition="Exists('$(NuGetPackageRoot)boost_date_time-vc120.1.57.0.0\build\native\boost_date_time-vc120.targets')" />
-    <Import Project="$(NuGetPackageRoot)boost_filesystem-vc120.1.57.0.0\build\native\boost_filesystem-vc120.targets" Condition="Exists('$(NuGetPackageRoot)boost_filesystem-vc120.1.57.0.0\build\native\boost_filesystem-vc120.targets')" />
-    <Import Project="$(NuGetPackageRoot)boost_iostreams-vc120.1.57.0.0\build\native\boost_iostreams-vc120.targets" Condition="Exists('$(NuGetPackageRoot)boost_iostreams-vc120.1.57.0.0\build\native\boost_iostreams-vc120.targets')" />
-    <Import Project="$(NuGetPackageRoot)boost_locale-vc120.1.57.0.0\build\native\boost_locale-vc120.targets" Condition="Exists('$(NuGetPackageRoot)boost_locale-vc120.1.57.0.0\build\native\boost_locale-vc120.targets')" />
-    <Import Project="$(NuGetPackageRoot)boost_log-vc120.1.57.0.0\build\native\boost_log-vc120.targets" Condition="Exists('$(NuGetPackageRoot)boost_log-vc120.1.57.0.0\build\native\boost_log-vc120.targets')" />
-    <Import Project="$(NuGetPackageRoot)boost_log_setup-vc120.1.57.0.0\build\native\boost_log_setup-vc120.targets" Condition="Exists('$(NuGetPackageRoot)boost_log_setup-vc120.1.57.0.0\build\native\boost_log_setup-vc120.targets')" />
-    <Import Project="$(NuGetPackageRoot)boost_program_options-vc120.1.57.0.0\build\native\boost_program_options-vc120.targets" Condition="Exists('$(NuGetPackageRoot)boost_program_options-vc120.1.57.0.0\build\native\boost_program_options-vc120.targets')" />
-    <Import Project="$(NuGetPackageRoot)boost_regex-vc120.1.57.0.0\build\native\boost_regex-vc120.targets" Condition="Exists('$(NuGetPackageRoot)boost_regex-vc120.1.57.0.0\build\native\boost_regex-vc120.targets')" />
-    <Import Project="$(NuGetPackageRoot)boost_system-vc120.1.57.0.0\build\native\boost_system-vc120.targets" Condition="Exists('$(NuGetPackageRoot)boost_system-vc120.1.57.0.0\build\native\boost_system-vc120.targets')" />
-    <Import Project="$(NuGetPackageRoot)boost_thread-vc120.1.57.0.0\build\native\boost_thread-vc120.targets" Condition="Exists('$(NuGetPackageRoot)boost_thread-vc120.1.57.0.0\build\native\boost_thread-vc120.targets')" />
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   <Target Name="EnsureNuGetPackageBuildImports" BeforeTargets="PrepareForBuild">
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       <ErrorText>This project references NuGet package(s) that are missing on this computer. Enable NuGet Package Restore to download them.  For more information, see http://go.microsoft.com/fwlink/?LinkID=322105. The missing file is {0}.</ErrorText>
     </PropertyGroup>
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-    <Error Condition="!Exists('$(NuGetPackageRoot)boost_date_time-vc120.1.57.0.0\build\native\boost_date_time-vc120.targets')" Text="$([System.String]::Format('$(ErrorText)', '$(NuGetPackageRoot)boost_date_time-vc120.1.57.0.0\build\native\boost_date_time-vc120.targets'))" />
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-    <Error Condition="!Exists('$(NuGetPackageRoot)boost_regex-vc120.1.57.0.0\build\native\boost_regex-vc120.targets')" Text="$([System.String]::Format('$(ErrorText)', '$(NuGetPackageRoot)boost_regex-vc120.1.57.0.0\build\native\boost_regex-vc120.targets'))" />
-    <Error Condition="!Exists('$(NuGetPackageRoot)boost_system-vc120.1.57.0.0\build\native\boost_system-vc120.targets')" Text="$([System.String]::Format('$(ErrorText)', '$(NuGetPackageRoot)boost_system-vc120.1.57.0.0\build\native\boost_system-vc120.targets'))" />
-    <Error Condition="!Exists('$(NuGetPackageRoot)boost_thread-vc120.1.57.0.0\build\native\boost_thread-vc120.targets')" Text="$([System.String]::Format('$(ErrorText)', '$(NuGetPackageRoot)boost_thread-vc120.1.57.0.0\build\native\boost_thread-vc120.targets'))" />
     <Error Condition="!Exists('$(NuGetPackageRoot)secp256k1_vc120.0.1.0.16\build\native\secp256k1_vc120.targets')" Text="$([System.String]::Format('$(ErrorText)', '$(NuGetPackageRoot)secp256k1_vc120.0.1.0.16\build\native\secp256k1_vc120.targets'))" />
   </Target>
 </Project>
diff --git a/builds/msvc/vs2013/libbitcoin-consensus/packages.config b/builds/msvc/vs2013/libbitcoin-consensus/packages.config
index 36fb9ca5..476d89cf 100644
--- a/builds/msvc/vs2013/libbitcoin-consensus/packages.config
+++ b/builds/msvc/vs2013/libbitcoin-consensus/packages.config
@@ -6,17 +6,5 @@
  |
  -->
 <packages>
-  <package id="boost" version="1.57.0.0" targetFramework="Native" />
-  <package id="boost_chrono-vc120" version="1.57.0.0" targetFramework="Native" />
-  <package id="boost_date_time-vc120" version="1.57.0.0" targetFramework="Native" />
-  <package id="boost_filesystem-vc120" version="1.57.0.0" targetFramework="Native" />
-  <package id="boost_iostreams-vc120" version="1.57.0.0" targetFramework="Native" />
-  <package id="boost_locale-vc120" version="1.57.0.0" targetFramework="Native" />
-  <package id="boost_log-vc120" version="1.57.0.0" targetFramework="Native" />
-  <package id="boost_log_setup-vc120" version="1.57.0.0" targetFramework="Native" />
-  <package id="boost_program_options-vc120" version="1.57.0.0" targetFramework="Native" />
-  <package id="boost_regex-vc120" version="1.57.0.0" targetFramework="Native" />
-  <package id="boost_system-vc120" version="1.57.0.0" targetFramework="Native" />
-  <package id="boost_thread-vc120" version="1.57.0.0" targetFramework="Native" />
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diff --git a/builds/msvc/vs2015/libbitcoin-consensus-test/libbitcoin-consensus-test.vcxproj b/builds/msvc/vs2015/libbitcoin-consensus-test/libbitcoin-consensus-test.vcxproj
index 58d041eb..f1e0f2b1 100644
--- a/builds/msvc/vs2015/libbitcoin-consensus-test/libbitcoin-consensus-test.vcxproj
+++ b/builds/msvc/vs2015/libbitcoin-consensus-test/libbitcoin-consensus-test.vcxproj
@@ -84,41 +84,17 @@
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
   <ImportGroup Label="ExtensionTargets" />
   <ImportGroup Label="ExtensionSettings">
+    <Import Project="$(NuGetPackageRoot)secp256k1_vc140.0.1.0.15\build\native\secp256k1_vc140.targets" Condition="Exists('$(NuGetPackageRoot)secp256k1_vc140.0.1.0.15\build\native\secp256k1_vc140.targets')" />
     <Import Project="$(NuGetPackageRoot)boost.1.64.0.0\build\native\boost.targets" Condition="Exists('$(NuGetPackageRoot)boost.1.64.0.0\build\native\boost.targets')" />
-    <Import Project="$(NuGetPackageRoot)boost_atomic-vc140.1.64.0.0\build\native\boost_atomic-vc140.targets" Condition="Exists('$(NuGetPackageRoot)boost_atomic-vc140.1.64.0.0\build\native\boost_atomic-vc140.targets')" />
-    <Import Project="$(NuGetPackageRoot)boost_chrono-vc140.1.64.0.0\build\native\boost_chrono-vc140.targets" Condition="Exists('$(NuGetPackageRoot)boost_chrono-vc140.1.64.0.0\build\native\boost_chrono-vc140.targets')" />
-    <Import Project="$(NuGetPackageRoot)boost_date_time-vc140.1.64.0.0\build\native\boost_date_time-vc140.targets" Condition="Exists('$(NuGetPackageRoot)boost_date_time-vc140.1.64.0.0\build\native\boost_date_time-vc140.targets')" />
-    <Import Project="$(NuGetPackageRoot)boost_filesystem-vc140.1.64.0.0\build\native\boost_filesystem-vc140.targets" Condition="Exists('$(NuGetPackageRoot)boost_filesystem-vc140.1.64.0.0\build\native\boost_filesystem-vc140.targets')" />
-    <Import Project="$(NuGetPackageRoot)boost_iostreams-vc140.1.64.0.0\build\native\boost_iostreams-vc140.targets" Condition="Exists('$(NuGetPackageRoot)boost_iostreams-vc140.1.64.0.0\build\native\boost_iostreams-vc140.targets')" />
-    <Import Project="$(NuGetPackageRoot)boost_locale-vc140.1.64.0.0\build\native\boost_locale-vc140.targets" Condition="Exists('$(NuGetPackageRoot)boost_locale-vc140.1.64.0.0\build\native\boost_locale-vc140.targets')" />
-    <Import Project="$(NuGetPackageRoot)boost_log-vc140.1.64.0.0\build\native\boost_log-vc140.targets" Condition="Exists('$(NuGetPackageRoot)boost_log-vc140.1.64.0.0\build\native\boost_log-vc140.targets')" />
-    <Import Project="$(NuGetPackageRoot)boost_log_setup-vc140.1.64.0.0\build\native\boost_log_setup-vc140.targets" Condition="Exists('$(NuGetPackageRoot)boost_log_setup-vc140.1.64.0.0\build\native\boost_log_setup-vc140.targets')" />
-    <Import Project="$(NuGetPackageRoot)boost_program_options-vc140.1.64.0.0\build\native\boost_program_options-vc140.targets" Condition="Exists('$(NuGetPackageRoot)boost_program_options-vc140.1.64.0.0\build\native\boost_program_options-vc140.targets')" />
-    <Import Project="$(NuGetPackageRoot)boost_regex-vc140.1.64.0.0\build\native\boost_regex-vc140.targets" Condition="Exists('$(NuGetPackageRoot)boost_regex-vc140.1.64.0.0\build\native\boost_regex-vc140.targets')" />
-    <Import Project="$(NuGetPackageRoot)boost_system-vc140.1.64.0.0\build\native\boost_system-vc140.targets" Condition="Exists('$(NuGetPackageRoot)boost_system-vc140.1.64.0.0\build\native\boost_system-vc140.targets')" />
-    <Import Project="$(NuGetPackageRoot)boost_thread-vc140.1.64.0.0\build\native\boost_thread-vc140.targets" Condition="Exists('$(NuGetPackageRoot)boost_thread-vc140.1.64.0.0\build\native\boost_thread-vc140.targets')" />
     <Import Project="$(NuGetPackageRoot)boost_unit_test_framework-vc140.1.64.0.0\build\native\boost_unit_test_framework-vc140.targets" Condition="Exists('$(NuGetPackageRoot)boost_unit_test_framework-vc140.1.64.0.0\build\native\boost_unit_test_framework-vc140.targets')" />
-    <Import Project="$(NuGetPackageRoot)secp256k1_vc140.0.1.0.15\build\native\secp256k1_vc140.targets" Condition="Exists('$(NuGetPackageRoot)secp256k1_vc140.0.1.0.15\build\native\secp256k1_vc140.targets')" />
   </ImportGroup>
   <Target Name="EnsureNuGetPackageBuildImports" BeforeTargets="PrepareForBuild">
     <PropertyGroup>
       <ErrorText>This project references NuGet package(s) that are missing on this computer. Enable NuGet Package Restore to download them.  For more information, see http://go.microsoft.com/fwlink/?LinkID=322105. The missing file is {0}.</ErrorText>
     </PropertyGroup>
+    <Error Condition="!Exists('$(NuGetPackageRoot)secp256k1_vc140.0.1.0.15\build\native\secp256k1_vc140.targets')" Text="$([System.String]::Format('$(ErrorText)', '$(NuGetPackageRoot)secp256k1_vc140.0.1.0.15\build\native\secp256k1_vc140.targets'))" />
     <Error Condition="!Exists('$(NuGetPackageRoot)boost.1.64.0.0\build\native\boost.targets')" Text="$([System.String]::Format('$(ErrorText)', '$(NuGetPackageRoot)boost.1.64.0.0\build\native\boost.targets'))" />
-    <Error Condition="!Exists('$(NuGetPackageRoot)boost_atomic-vc140.1.64.0.0\build\native\boost_atomic-vc140.targets')" Text="$([System.String]::Format('$(ErrorText)', '$(NuGetPackageRoot)boost_atomic-vc140.1.64.0.0\build\native\boost_atomic-vc140.targets'))" />
-    <Error Condition="!Exists('$(NuGetPackageRoot)boost_chrono-vc140.1.64.0.0\build\native\boost_chrono-vc140.targets')" Text="$([System.String]::Format('$(ErrorText)', '$(NuGetPackageRoot)boost_chrono-vc140.1.64.0.0\build\native\boost_chrono-vc140.targets'))" />
-    <Error Condition="!Exists('$(NuGetPackageRoot)boost_date_time-vc140.1.64.0.0\build\native\boost_date_time-vc140.targets')" Text="$([System.String]::Format('$(ErrorText)', '$(NuGetPackageRoot)boost_date_time-vc140.1.64.0.0\build\native\boost_date_time-vc140.targets'))" />
-    <Error Condition="!Exists('$(NuGetPackageRoot)boost_filesystem-vc140.1.64.0.0\build\native\boost_filesystem-vc140.targets')" Text="$([System.String]::Format('$(ErrorText)', '$(NuGetPackageRoot)boost_filesystem-vc140.1.64.0.0\build\native\boost_filesystem-vc140.targets'))" />
-    <Error Condition="!Exists('$(NuGetPackageRoot)boost_iostreams-vc140.1.64.0.0\build\native\boost_iostreams-vc140.targets')" Text="$([System.String]::Format('$(ErrorText)', '$(NuGetPackageRoot)boost_iostreams-vc140.1.64.0.0\build\native\boost_iostreams-vc140.targets'))" />
-    <Error Condition="!Exists('$(NuGetPackageRoot)boost_locale-vc140.1.64.0.0\build\native\boost_locale-vc140.targets')" Text="$([System.String]::Format('$(ErrorText)', '$(NuGetPackageRoot)boost_locale-vc140.1.64.0.0\build\native\boost_locale-vc140.targets'))" />
-    <Error Condition="!Exists('$(NuGetPackageRoot)boost_log-vc140.1.64.0.0\build\native\boost_log-vc140.targets')" Text="$([System.String]::Format('$(ErrorText)', '$(NuGetPackageRoot)boost_log-vc140.1.64.0.0\build\native\boost_log-vc140.targets'))" />
-    <Error Condition="!Exists('$(NuGetPackageRoot)boost_log_setup-vc140.1.64.0.0\build\native\boost_log_setup-vc140.targets')" Text="$([System.String]::Format('$(ErrorText)', '$(NuGetPackageRoot)boost_log_setup-vc140.1.64.0.0\build\native\boost_log_setup-vc140.targets'))" />
-    <Error Condition="!Exists('$(NuGetPackageRoot)boost_program_options-vc140.1.64.0.0\build\native\boost_program_options-vc140.targets')" Text="$([System.String]::Format('$(ErrorText)', '$(NuGetPackageRoot)boost_program_options-vc140.1.64.0.0\build\native\boost_program_options-vc140.targets'))" />
-    <Error Condition="!Exists('$(NuGetPackageRoot)boost_regex-vc140.1.64.0.0\build\native\boost_regex-vc140.targets')" Text="$([System.String]::Format('$(ErrorText)', '$(NuGetPackageRoot)boost_regex-vc140.1.64.0.0\build\native\boost_regex-vc140.targets'))" />
-    <Error Condition="!Exists('$(NuGetPackageRoot)boost_system-vc140.1.64.0.0\build\native\boost_system-vc140.targets')" Text="$([System.String]::Format('$(ErrorText)', '$(NuGetPackageRoot)boost_system-vc140.1.64.0.0\build\native\boost_system-vc140.targets'))" />
-    <Error Condition="!Exists('$(NuGetPackageRoot)boost_thread-vc140.1.64.0.0\build\native\boost_thread-vc140.targets')" Text="$([System.String]::Format('$(ErrorText)', '$(NuGetPackageRoot)boost_thread-vc140.1.64.0.0\build\native\boost_thread-vc140.targets'))" />
     <Error Condition="!Exists('$(NuGetPackageRoot)boost_unit_test_framework-vc140.1.64.0.0\build\native\boost_unit_test_framework-vc140.targets')" Text="$([System.String]::Format('$(ErrorText)', '$(NuGetPackageRoot)boost_unit_test_framework-vc140.1.64.0.0\build\native\boost_unit_test_framework-vc140.targets'))" />
-    <Error Condition="!Exists('$(NuGetPackageRoot)secp256k1_vc140.0.1.0.15\build\native\secp256k1_vc140.targets')" Text="$([System.String]::Format('$(ErrorText)', '$(NuGetPackageRoot)secp256k1_vc140.0.1.0.15\build\native\secp256k1_vc140.targets'))" />
   </Target>
   <ItemGroup>
     <ProjectReference Include="..\libbitcoin-consensus\libbitcoin-consensus.vcxproj">
diff --git a/builds/msvc/vs2015/libbitcoin-consensus-test/packages.config b/builds/msvc/vs2015/libbitcoin-consensus-test/packages.config
index 51f1dffb..c3e85280 100644
--- a/builds/msvc/vs2015/libbitcoin-consensus-test/packages.config
+++ b/builds/msvc/vs2015/libbitcoin-consensus-test/packages.config
@@ -6,19 +6,7 @@
  |
  -->
 <packages>
+  <package id="secp256k1_vc140" version="0.1.0.15" targetFramework="Native" />
   <package id="boost" version="1.64.0.0" targetFramework="Native" />
-  <package id="boost_atomic-vc140" version="1.64.0.0" targetFramework="Native" />
-  <package id="boost_chrono-vc140" version="1.64.0.0" targetFramework="Native" />
-  <package id="boost_date_time-vc140" version="1.64.0.0" targetFramework="Native" />
-  <package id="boost_filesystem-vc140" version="1.64.0.0" targetFramework="Native" />
-  <package id="boost_iostreams-vc140" version="1.64.0.0" targetFramework="Native" />
-  <package id="boost_locale-vc140" version="1.64.0.0" targetFramework="Native" />
-  <package id="boost_log-vc140" version="1.64.0.0" targetFramework="Native" />
-  <package id="boost_log_setup-vc140" version="1.64.0.0" targetFramework="Native" />
-  <package id="boost_program_options-vc140" version="1.64.0.0" targetFramework="Native" />
-  <package id="boost_regex-vc140" version="1.64.0.0" targetFramework="Native" />
-  <package id="boost_system-vc140" version="1.64.0.0" targetFramework="Native" />
-  <package id="boost_thread-vc140" version="1.64.0.0" targetFramework="Native" />
   <package id="boost_unit_test_framework-vc140" version="1.64.0.0" targetFramework="Native" />
-  <package id="secp256k1_vc140" version="0.1.0.15" targetFramework="Native" />
 </packages>
diff --git a/builds/msvc/vs2015/libbitcoin-consensus/libbitcoin-consensus.vcxproj b/builds/msvc/vs2015/libbitcoin-consensus/libbitcoin-consensus.vcxproj
index a0180cbf..fecf3b45 100644
--- a/builds/msvc/vs2015/libbitcoin-consensus/libbitcoin-consensus.vcxproj
+++ b/builds/msvc/vs2015/libbitcoin-consensus/libbitcoin-consensus.vcxproj
@@ -125,38 +125,12 @@
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
   <ImportGroup Label="ExtensionTargets" />
   <ImportGroup Label="ExtensionSettings">
-    <Import Project="$(NuGetPackageRoot)boost.1.64.0.0\build\native\boost.targets" Condition="Exists('$(NuGetPackageRoot)boost.1.64.0.0\build\native\boost.targets')" />
-    <Import Project="$(NuGetPackageRoot)boost_atomic-vc140.1.64.0.0\build\native\boost_atomic-vc140.targets" Condition="Exists('$(NuGetPackageRoot)boost_atomic-vc140.1.64.0.0\build\native\boost_atomic-vc140.targets')" />
-    <Import Project="$(NuGetPackageRoot)boost_chrono-vc140.1.64.0.0\build\native\boost_chrono-vc140.targets" Condition="Exists('$(NuGetPackageRoot)boost_chrono-vc140.1.64.0.0\build\native\boost_chrono-vc140.targets')" />
-    <Import Project="$(NuGetPackageRoot)boost_date_time-vc140.1.64.0.0\build\native\boost_date_time-vc140.targets" Condition="Exists('$(NuGetPackageRoot)boost_date_time-vc140.1.64.0.0\build\native\boost_date_time-vc140.targets')" />
-    <Import Project="$(NuGetPackageRoot)boost_filesystem-vc140.1.64.0.0\build\native\boost_filesystem-vc140.targets" Condition="Exists('$(NuGetPackageRoot)boost_filesystem-vc140.1.64.0.0\build\native\boost_filesystem-vc140.targets')" />
-    <Import Project="$(NuGetPackageRoot)boost_iostreams-vc140.1.64.0.0\build\native\boost_iostreams-vc140.targets" Condition="Exists('$(NuGetPackageRoot)boost_iostreams-vc140.1.64.0.0\build\native\boost_iostreams-vc140.targets')" />
-    <Import Project="$(NuGetPackageRoot)boost_locale-vc140.1.64.0.0\build\native\boost_locale-vc140.targets" Condition="Exists('$(NuGetPackageRoot)boost_locale-vc140.1.64.0.0\build\native\boost_locale-vc140.targets')" />
-    <Import Project="$(NuGetPackageRoot)boost_log-vc140.1.64.0.0\build\native\boost_log-vc140.targets" Condition="Exists('$(NuGetPackageRoot)boost_log-vc140.1.64.0.0\build\native\boost_log-vc140.targets')" />
-    <Import Project="$(NuGetPackageRoot)boost_log_setup-vc140.1.64.0.0\build\native\boost_log_setup-vc140.targets" Condition="Exists('$(NuGetPackageRoot)boost_log_setup-vc140.1.64.0.0\build\native\boost_log_setup-vc140.targets')" />
-    <Import Project="$(NuGetPackageRoot)boost_program_options-vc140.1.64.0.0\build\native\boost_program_options-vc140.targets" Condition="Exists('$(NuGetPackageRoot)boost_program_options-vc140.1.64.0.0\build\native\boost_program_options-vc140.targets')" />
-    <Import Project="$(NuGetPackageRoot)boost_regex-vc140.1.64.0.0\build\native\boost_regex-vc140.targets" Condition="Exists('$(NuGetPackageRoot)boost_regex-vc140.1.64.0.0\build\native\boost_regex-vc140.targets')" />
-    <Import Project="$(NuGetPackageRoot)boost_system-vc140.1.64.0.0\build\native\boost_system-vc140.targets" Condition="Exists('$(NuGetPackageRoot)boost_system-vc140.1.64.0.0\build\native\boost_system-vc140.targets')" />
-    <Import Project="$(NuGetPackageRoot)boost_thread-vc140.1.64.0.0\build\native\boost_thread-vc140.targets" Condition="Exists('$(NuGetPackageRoot)boost_thread-vc140.1.64.0.0\build\native\boost_thread-vc140.targets')" />
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       <ErrorText>This project references NuGet package(s) that are missing on this computer. Enable NuGet Package Restore to download them.  For more information, see http://go.microsoft.com/fwlink/?LinkID=322105. The missing file is {0}.</ErrorText>
     </PropertyGroup>
-    <Error Condition="!Exists('$(NuGetPackageRoot)boost.1.64.0.0\build\native\boost.targets')" Text="$([System.String]::Format('$(ErrorText)', '$(NuGetPackageRoot)boost.1.64.0.0\build\native\boost.targets'))" />
-    <Error Condition="!Exists('$(NuGetPackageRoot)boost_atomic-vc140.1.64.0.0\build\native\boost_atomic-vc140.targets')" Text="$([System.String]::Format('$(ErrorText)', '$(NuGetPackageRoot)boost_atomic-vc140.1.64.0.0\build\native\boost_atomic-vc140.targets'))" />
-    <Error Condition="!Exists('$(NuGetPackageRoot)boost_chrono-vc140.1.64.0.0\build\native\boost_chrono-vc140.targets')" Text="$([System.String]::Format('$(ErrorText)', '$(NuGetPackageRoot)boost_chrono-vc140.1.64.0.0\build\native\boost_chrono-vc140.targets'))" />
-    <Error Condition="!Exists('$(NuGetPackageRoot)boost_date_time-vc140.1.64.0.0\build\native\boost_date_time-vc140.targets')" Text="$([System.String]::Format('$(ErrorText)', '$(NuGetPackageRoot)boost_date_time-vc140.1.64.0.0\build\native\boost_date_time-vc140.targets'))" />
-    <Error Condition="!Exists('$(NuGetPackageRoot)boost_filesystem-vc140.1.64.0.0\build\native\boost_filesystem-vc140.targets')" Text="$([System.String]::Format('$(ErrorText)', '$(NuGetPackageRoot)boost_filesystem-vc140.1.64.0.0\build\native\boost_filesystem-vc140.targets'))" />
-    <Error Condition="!Exists('$(NuGetPackageRoot)boost_iostreams-vc140.1.64.0.0\build\native\boost_iostreams-vc140.targets')" Text="$([System.String]::Format('$(ErrorText)', '$(NuGetPackageRoot)boost_iostreams-vc140.1.64.0.0\build\native\boost_iostreams-vc140.targets'))" />
-    <Error Condition="!Exists('$(NuGetPackageRoot)boost_locale-vc140.1.64.0.0\build\native\boost_locale-vc140.targets')" Text="$([System.String]::Format('$(ErrorText)', '$(NuGetPackageRoot)boost_locale-vc140.1.64.0.0\build\native\boost_locale-vc140.targets'))" />
-    <Error Condition="!Exists('$(NuGetPackageRoot)boost_log-vc140.1.64.0.0\build\native\boost_log-vc140.targets')" Text="$([System.String]::Format('$(ErrorText)', '$(NuGetPackageRoot)boost_log-vc140.1.64.0.0\build\native\boost_log-vc140.targets'))" />
-    <Error Condition="!Exists('$(NuGetPackageRoot)boost_log_setup-vc140.1.64.0.0\build\native\boost_log_setup-vc140.targets')" Text="$([System.String]::Format('$(ErrorText)', '$(NuGetPackageRoot)boost_log_setup-vc140.1.64.0.0\build\native\boost_log_setup-vc140.targets'))" />
-    <Error Condition="!Exists('$(NuGetPackageRoot)boost_program_options-vc140.1.64.0.0\build\native\boost_program_options-vc140.targets')" Text="$([System.String]::Format('$(ErrorText)', '$(NuGetPackageRoot)boost_program_options-vc140.1.64.0.0\build\native\boost_program_options-vc140.targets'))" />
-    <Error Condition="!Exists('$(NuGetPackageRoot)boost_regex-vc140.1.64.0.0\build\native\boost_regex-vc140.targets')" Text="$([System.String]::Format('$(ErrorText)', '$(NuGetPackageRoot)boost_regex-vc140.1.64.0.0\build\native\boost_regex-vc140.targets'))" />
-    <Error Condition="!Exists('$(NuGetPackageRoot)boost_system-vc140.1.64.0.0\build\native\boost_system-vc140.targets')" Text="$([System.String]::Format('$(ErrorText)', '$(NuGetPackageRoot)boost_system-vc140.1.64.0.0\build\native\boost_system-vc140.targets'))" />
-    <Error Condition="!Exists('$(NuGetPackageRoot)boost_thread-vc140.1.64.0.0\build\native\boost_thread-vc140.targets')" Text="$([System.String]::Format('$(ErrorText)', '$(NuGetPackageRoot)boost_thread-vc140.1.64.0.0\build\native\boost_thread-vc140.targets'))" />
     <Error Condition="!Exists('$(NuGetPackageRoot)secp256k1_vc140.0.1.0.15\build\native\secp256k1_vc140.targets')" Text="$([System.String]::Format('$(ErrorText)', '$(NuGetPackageRoot)secp256k1_vc140.0.1.0.15\build\native\secp256k1_vc140.targets'))" />
   </Target>
 </Project>
diff --git a/builds/msvc/vs2015/libbitcoin-consensus/packages.config b/builds/msvc/vs2015/libbitcoin-consensus/packages.config
index 4eb4ee63..2554cbcc 100644
--- a/builds/msvc/vs2015/libbitcoin-consensus/packages.config
+++ b/builds/msvc/vs2015/libbitcoin-consensus/packages.config
@@ -6,18 +6,5 @@
  |
  -->
 <packages>
-  <package id="boost" version="1.64.0.0" targetFramework="Native" />
-  <package id="boost_atomic-vc140" version="1.64.0.0" targetFramework="Native" />
-  <package id="boost_chrono-vc140" version="1.64.0.0" targetFramework="Native" />
-  <package id="boost_date_time-vc140" version="1.64.0.0" targetFramework="Native" />
-  <package id="boost_filesystem-vc140" version="1.64.0.0" targetFramework="Native" />
-  <package id="boost_iostreams-vc140" version="1.64.0.0" targetFramework="Native" />
-  <package id="boost_locale-vc140" version="1.64.0.0" targetFramework="Native" />
-  <package id="boost_log-vc140" version="1.64.0.0" targetFramework="Native" />
-  <package id="boost_log_setup-vc140" version="1.64.0.0" targetFramework="Native" />
-  <package id="boost_program_options-vc140" version="1.64.0.0" targetFramework="Native" />
-  <package id="boost_regex-vc140" version="1.64.0.0" targetFramework="Native" />
-  <package id="boost_system-vc140" version="1.64.0.0" targetFramework="Native" />
-  <package id="boost_thread-vc140" version="1.64.0.0" targetFramework="Native" />
   <package id="secp256k1_vc140" version="0.1.0.15" targetFramework="Native" />
 </packages>
diff --git a/builds/msvc/vs2017/libbitcoin-consensus-test/libbitcoin-consensus-test.vcxproj b/builds/msvc/vs2017/libbitcoin-consensus-test/libbitcoin-consensus-test.vcxproj
index 3f13539f..7c7844d7 100644
--- a/builds/msvc/vs2017/libbitcoin-consensus-test/libbitcoin-consensus-test.vcxproj
+++ b/builds/msvc/vs2017/libbitcoin-consensus-test/libbitcoin-consensus-test.vcxproj
@@ -84,41 +84,17 @@
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
   <ImportGroup Label="ExtensionTargets" />
   <ImportGroup Label="ExtensionSettings">
+    <Import Project="$(NuGetPackageRoot)secp256k1_vc141.0.1.0.16\build\native\secp256k1_vc141.targets" Condition="Exists('$(NuGetPackageRoot)secp256k1_vc141.0.1.0.16\build\native\secp256k1_vc141.targets')" />
     <Import Project="$(NuGetPackageRoot)boost.1.64.0.0\build\native\boost.targets" Condition="Exists('$(NuGetPackageRoot)boost.1.64.0.0\build\native\boost.targets')" />
-    <Import Project="$(NuGetPackageRoot)boost_atomic-vc141.1.64.0.0\build\native\boost_atomic-vc141.targets" Condition="Exists('$(NuGetPackageRoot)boost_atomic-vc141.1.64.0.0\build\native\boost_atomic-vc141.targets')" />
-    <Import Project="$(NuGetPackageRoot)boost_chrono-vc141.1.64.0.0\build\native\boost_chrono-vc141.targets" Condition="Exists('$(NuGetPackageRoot)boost_chrono-vc141.1.64.0.0\build\native\boost_chrono-vc141.targets')" />
-    <Import Project="$(NuGetPackageRoot)boost_date_time-vc141.1.64.0.0\build\native\boost_date_time-vc141.targets" Condition="Exists('$(NuGetPackageRoot)boost_date_time-vc141.1.64.0.0\build\native\boost_date_time-vc141.targets')" />
-    <Import Project="$(NuGetPackageRoot)boost_filesystem-vc141.1.64.0.0\build\native\boost_filesystem-vc141.targets" Condition="Exists('$(NuGetPackageRoot)boost_filesystem-vc141.1.64.0.0\build\native\boost_filesystem-vc141.targets')" />
-    <Import Project="$(NuGetPackageRoot)boost_iostreams-vc141.1.64.0.0\build\native\boost_iostreams-vc141.targets" Condition="Exists('$(NuGetPackageRoot)boost_iostreams-vc141.1.64.0.0\build\native\boost_iostreams-vc141.targets')" />
-    <Import Project="$(NuGetPackageRoot)boost_locale-vc141.1.64.0.0\build\native\boost_locale-vc141.targets" Condition="Exists('$(NuGetPackageRoot)boost_locale-vc141.1.64.0.0\build\native\boost_locale-vc141.targets')" />
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-    <Import Project="$(NuGetPackageRoot)boost_regex-vc141.1.64.0.0\build\native\boost_regex-vc141.targets" Condition="Exists('$(NuGetPackageRoot)boost_regex-vc141.1.64.0.0\build\native\boost_regex-vc141.targets')" />
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-    <Import Project="$(NuGetPackageRoot)secp256k1_vc141.0.1.0.16\build\native\secp256k1_vc141.targets" Condition="Exists('$(NuGetPackageRoot)secp256k1_vc141.0.1.0.16\build\native\secp256k1_vc141.targets')" />
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       <ErrorText>This project references NuGet package(s) that are missing on this computer. Enable NuGet Package Restore to download them.  For more information, see http://go.microsoft.com/fwlink/?LinkID=322105. The missing file is {0}.</ErrorText>
     </PropertyGroup>
+    <Error Condition="!Exists('$(NuGetPackageRoot)secp256k1_vc141.0.1.0.16\build\native\secp256k1_vc141.targets')" Text="$([System.String]::Format('$(ErrorText)', '$(NuGetPackageRoot)secp256k1_vc141.0.1.0.16\build\native\secp256k1_vc141.targets'))" />
     <Error Condition="!Exists('$(NuGetPackageRoot)boost.1.64.0.0\build\native\boost.targets')" Text="$([System.String]::Format('$(ErrorText)', '$(NuGetPackageRoot)boost.1.64.0.0\build\native\boost.targets'))" />
-    <Error Condition="!Exists('$(NuGetPackageRoot)boost_atomic-vc141.1.64.0.0\build\native\boost_atomic-vc141.targets')" Text="$([System.String]::Format('$(ErrorText)', '$(NuGetPackageRoot)boost_atomic-vc141.1.64.0.0\build\native\boost_atomic-vc141.targets'))" />
-    <Error Condition="!Exists('$(NuGetPackageRoot)boost_chrono-vc141.1.64.0.0\build\native\boost_chrono-vc141.targets')" Text="$([System.String]::Format('$(ErrorText)', '$(NuGetPackageRoot)boost_chrono-vc141.1.64.0.0\build\native\boost_chrono-vc141.targets'))" />
-    <Error Condition="!Exists('$(NuGetPackageRoot)boost_date_time-vc141.1.64.0.0\build\native\boost_date_time-vc141.targets')" Text="$([System.String]::Format('$(ErrorText)', '$(NuGetPackageRoot)boost_date_time-vc141.1.64.0.0\build\native\boost_date_time-vc141.targets'))" />
-    <Error Condition="!Exists('$(NuGetPackageRoot)boost_filesystem-vc141.1.64.0.0\build\native\boost_filesystem-vc141.targets')" Text="$([System.String]::Format('$(ErrorText)', '$(NuGetPackageRoot)boost_filesystem-vc141.1.64.0.0\build\native\boost_filesystem-vc141.targets'))" />
-    <Error Condition="!Exists('$(NuGetPackageRoot)boost_iostreams-vc141.1.64.0.0\build\native\boost_iostreams-vc141.targets')" Text="$([System.String]::Format('$(ErrorText)', '$(NuGetPackageRoot)boost_iostreams-vc141.1.64.0.0\build\native\boost_iostreams-vc141.targets'))" />
-    <Error Condition="!Exists('$(NuGetPackageRoot)boost_locale-vc141.1.64.0.0\build\native\boost_locale-vc141.targets')" Text="$([System.String]::Format('$(ErrorText)', '$(NuGetPackageRoot)boost_locale-vc141.1.64.0.0\build\native\boost_locale-vc141.targets'))" />
-    <Error Condition="!Exists('$(NuGetPackageRoot)boost_log-vc141.1.64.0.0\build\native\boost_log-vc141.targets')" Text="$([System.String]::Format('$(ErrorText)', '$(NuGetPackageRoot)boost_log-vc141.1.64.0.0\build\native\boost_log-vc141.targets'))" />
-    <Error Condition="!Exists('$(NuGetPackageRoot)boost_log_setup-vc141.1.64.0.0\build\native\boost_log_setup-vc141.targets')" Text="$([System.String]::Format('$(ErrorText)', '$(NuGetPackageRoot)boost_log_setup-vc141.1.64.0.0\build\native\boost_log_setup-vc141.targets'))" />
-    <Error Condition="!Exists('$(NuGetPackageRoot)boost_program_options-vc141.1.64.0.0\build\native\boost_program_options-vc141.targets')" Text="$([System.String]::Format('$(ErrorText)', '$(NuGetPackageRoot)boost_program_options-vc141.1.64.0.0\build\native\boost_program_options-vc141.targets'))" />
-    <Error Condition="!Exists('$(NuGetPackageRoot)boost_regex-vc141.1.64.0.0\build\native\boost_regex-vc141.targets')" Text="$([System.String]::Format('$(ErrorText)', '$(NuGetPackageRoot)boost_regex-vc141.1.64.0.0\build\native\boost_regex-vc141.targets'))" />
-    <Error Condition="!Exists('$(NuGetPackageRoot)boost_system-vc141.1.64.0.0\build\native\boost_system-vc141.targets')" Text="$([System.String]::Format('$(ErrorText)', '$(NuGetPackageRoot)boost_system-vc141.1.64.0.0\build\native\boost_system-vc141.targets'))" />
-    <Error Condition="!Exists('$(NuGetPackageRoot)boost_thread-vc141.1.64.0.0\build\native\boost_thread-vc141.targets')" Text="$([System.String]::Format('$(ErrorText)', '$(NuGetPackageRoot)boost_thread-vc141.1.64.0.0\build\native\boost_thread-vc141.targets'))" />
     <Error Condition="!Exists('$(NuGetPackageRoot)boost_unit_test_framework-vc141.1.64.0.0\build\native\boost_unit_test_framework-vc141.targets')" Text="$([System.String]::Format('$(ErrorText)', '$(NuGetPackageRoot)boost_unit_test_framework-vc141.1.64.0.0\build\native\boost_unit_test_framework-vc141.targets'))" />
-    <Error Condition="!Exists('$(NuGetPackageRoot)secp256k1_vc141.0.1.0.16\build\native\secp256k1_vc141.targets')" Text="$([System.String]::Format('$(ErrorText)', '$(NuGetPackageRoot)secp256k1_vc141.0.1.0.16\build\native\secp256k1_vc141.targets'))" />
   </Target>
   <ItemGroup>
     <ProjectReference Include="..\libbitcoin-consensus\libbitcoin-consensus.vcxproj">
diff --git a/builds/msvc/vs2017/libbitcoin-consensus-test/packages.config b/builds/msvc/vs2017/libbitcoin-consensus-test/packages.config
index eb41f90d..6bc5f031 100644
--- a/builds/msvc/vs2017/libbitcoin-consensus-test/packages.config
+++ b/builds/msvc/vs2017/libbitcoin-consensus-test/packages.config
@@ -6,19 +6,7 @@
  |
  -->
 <packages>
+  <package id="secp256k1_vc141" version="0.1.0.16" targetFramework="Native" />
   <package id="boost" version="1.64.0.0" targetFramework="Native" />
-  <package id="boost_atomic-vc141" version="1.64.0.0" targetFramework="Native" />
-  <package id="boost_chrono-vc141" version="1.64.0.0" targetFramework="Native" />
-  <package id="boost_date_time-vc141" version="1.64.0.0" targetFramework="Native" />
-  <package id="boost_filesystem-vc141" version="1.64.0.0" targetFramework="Native" />
-  <package id="boost_iostreams-vc141" version="1.64.0.0" targetFramework="Native" />
-  <package id="boost_locale-vc141" version="1.64.0.0" targetFramework="Native" />
-  <package id="boost_log-vc141" version="1.64.0.0" targetFramework="Native" />
-  <package id="boost_log_setup-vc141" version="1.64.0.0" targetFramework="Native" />
-  <package id="boost_program_options-vc141" version="1.64.0.0" targetFramework="Native" />
-  <package id="boost_regex-vc141" version="1.64.0.0" targetFramework="Native" />
-  <package id="boost_system-vc141" version="1.64.0.0" targetFramework="Native" />
-  <package id="boost_thread-vc141" version="1.64.0.0" targetFramework="Native" />
   <package id="boost_unit_test_framework-vc141" version="1.64.0.0" targetFramework="Native" />
-  <package id="secp256k1_vc141" version="0.1.0.16" targetFramework="Native" />
 </packages>
diff --git a/builds/msvc/vs2017/libbitcoin-consensus/libbitcoin-consensus.vcxproj b/builds/msvc/vs2017/libbitcoin-consensus/libbitcoin-consensus.vcxproj
index 41eeb81e..0b5de902 100644
--- a/builds/msvc/vs2017/libbitcoin-consensus/libbitcoin-consensus.vcxproj
+++ b/builds/msvc/vs2017/libbitcoin-consensus/libbitcoin-consensus.vcxproj
@@ -125,38 +125,12 @@
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
   <ImportGroup Label="ExtensionTargets" />
   <ImportGroup Label="ExtensionSettings">
-    <Import Project="$(NuGetPackageRoot)boost.1.64.0.0\build\native\boost.targets" Condition="Exists('$(NuGetPackageRoot)boost.1.64.0.0\build\native\boost.targets')" />
-    <Import Project="$(NuGetPackageRoot)boost_atomic-vc141.1.64.0.0\build\native\boost_atomic-vc141.targets" Condition="Exists('$(NuGetPackageRoot)boost_atomic-vc141.1.64.0.0\build\native\boost_atomic-vc141.targets')" />
-    <Import Project="$(NuGetPackageRoot)boost_chrono-vc141.1.64.0.0\build\native\boost_chrono-vc141.targets" Condition="Exists('$(NuGetPackageRoot)boost_chrono-vc141.1.64.0.0\build\native\boost_chrono-vc141.targets')" />
-    <Import Project="$(NuGetPackageRoot)boost_date_time-vc141.1.64.0.0\build\native\boost_date_time-vc141.targets" Condition="Exists('$(NuGetPackageRoot)boost_date_time-vc141.1.64.0.0\build\native\boost_date_time-vc141.targets')" />
-    <Import Project="$(NuGetPackageRoot)boost_filesystem-vc141.1.64.0.0\build\native\boost_filesystem-vc141.targets" Condition="Exists('$(NuGetPackageRoot)boost_filesystem-vc141.1.64.0.0\build\native\boost_filesystem-vc141.targets')" />
-    <Import Project="$(NuGetPackageRoot)boost_iostreams-vc141.1.64.0.0\build\native\boost_iostreams-vc141.targets" Condition="Exists('$(NuGetPackageRoot)boost_iostreams-vc141.1.64.0.0\build\native\boost_iostreams-vc141.targets')" />
-    <Import Project="$(NuGetPackageRoot)boost_locale-vc141.1.64.0.0\build\native\boost_locale-vc141.targets" Condition="Exists('$(NuGetPackageRoot)boost_locale-vc141.1.64.0.0\build\native\boost_locale-vc141.targets')" />
-    <Import Project="$(NuGetPackageRoot)boost_log-vc141.1.64.0.0\build\native\boost_log-vc141.targets" Condition="Exists('$(NuGetPackageRoot)boost_log-vc141.1.64.0.0\build\native\boost_log-vc141.targets')" />
-    <Import Project="$(NuGetPackageRoot)boost_log_setup-vc141.1.64.0.0\build\native\boost_log_setup-vc141.targets" Condition="Exists('$(NuGetPackageRoot)boost_log_setup-vc141.1.64.0.0\build\native\boost_log_setup-vc141.targets')" />
-    <Import Project="$(NuGetPackageRoot)boost_program_options-vc141.1.64.0.0\build\native\boost_program_options-vc141.targets" Condition="Exists('$(NuGetPackageRoot)boost_program_options-vc141.1.64.0.0\build\native\boost_program_options-vc141.targets')" />
-    <Import Project="$(NuGetPackageRoot)boost_regex-vc141.1.64.0.0\build\native\boost_regex-vc141.targets" Condition="Exists('$(NuGetPackageRoot)boost_regex-vc141.1.64.0.0\build\native\boost_regex-vc141.targets')" />
-    <Import Project="$(NuGetPackageRoot)boost_system-vc141.1.64.0.0\build\native\boost_system-vc141.targets" Condition="Exists('$(NuGetPackageRoot)boost_system-vc141.1.64.0.0\build\native\boost_system-vc141.targets')" />
-    <Import Project="$(NuGetPackageRoot)boost_thread-vc141.1.64.0.0\build\native\boost_thread-vc141.targets" Condition="Exists('$(NuGetPackageRoot)boost_thread-vc141.1.64.0.0\build\native\boost_thread-vc141.targets')" />
     <Import Project="$(NuGetPackageRoot)secp256k1_vc141.0.1.0.16\build\native\secp256k1_vc141.targets" Condition="Exists('$(NuGetPackageRoot)secp256k1_vc141.0.1.0.16\build\native\secp256k1_vc141.targets')" />
   </ImportGroup>
   <Target Name="EnsureNuGetPackageBuildImports" BeforeTargets="PrepareForBuild">
     <PropertyGroup>
       <ErrorText>This project references NuGet package(s) that are missing on this computer. Enable NuGet Package Restore to download them.  For more information, see http://go.microsoft.com/fwlink/?LinkID=322105. The missing file is {0}.</ErrorText>
     </PropertyGroup>
-    <Error Condition="!Exists('$(NuGetPackageRoot)boost.1.64.0.0\build\native\boost.targets')" Text="$([System.String]::Format('$(ErrorText)', '$(NuGetPackageRoot)boost.1.64.0.0\build\native\boost.targets'))" />
-    <Error Condition="!Exists('$(NuGetPackageRoot)boost_atomic-vc141.1.64.0.0\build\native\boost_atomic-vc141.targets')" Text="$([System.String]::Format('$(ErrorText)', '$(NuGetPackageRoot)boost_atomic-vc141.1.64.0.0\build\native\boost_atomic-vc141.targets'))" />
-    <Error Condition="!Exists('$(NuGetPackageRoot)boost_chrono-vc141.1.64.0.0\build\native\boost_chrono-vc141.targets')" Text="$([System.String]::Format('$(ErrorText)', '$(NuGetPackageRoot)boost_chrono-vc141.1.64.0.0\build\native\boost_chrono-vc141.targets'))" />
-    <Error Condition="!Exists('$(NuGetPackageRoot)boost_date_time-vc141.1.64.0.0\build\native\boost_date_time-vc141.targets')" Text="$([System.String]::Format('$(ErrorText)', '$(NuGetPackageRoot)boost_date_time-vc141.1.64.0.0\build\native\boost_date_time-vc141.targets'))" />
-    <Error Condition="!Exists('$(NuGetPackageRoot)boost_filesystem-vc141.1.64.0.0\build\native\boost_filesystem-vc141.targets')" Text="$([System.String]::Format('$(ErrorText)', '$(NuGetPackageRoot)boost_filesystem-vc141.1.64.0.0\build\native\boost_filesystem-vc141.targets'))" />
-    <Error Condition="!Exists('$(NuGetPackageRoot)boost_iostreams-vc141.1.64.0.0\build\native\boost_iostreams-vc141.targets')" Text="$([System.String]::Format('$(ErrorText)', '$(NuGetPackageRoot)boost_iostreams-vc141.1.64.0.0\build\native\boost_iostreams-vc141.targets'))" />
-    <Error Condition="!Exists('$(NuGetPackageRoot)boost_locale-vc141.1.64.0.0\build\native\boost_locale-vc141.targets')" Text="$([System.String]::Format('$(ErrorText)', '$(NuGetPackageRoot)boost_locale-vc141.1.64.0.0\build\native\boost_locale-vc141.targets'))" />
-    <Error Condition="!Exists('$(NuGetPackageRoot)boost_log-vc141.1.64.0.0\build\native\boost_log-vc141.targets')" Text="$([System.String]::Format('$(ErrorText)', '$(NuGetPackageRoot)boost_log-vc141.1.64.0.0\build\native\boost_log-vc141.targets'))" />
-    <Error Condition="!Exists('$(NuGetPackageRoot)boost_log_setup-vc141.1.64.0.0\build\native\boost_log_setup-vc141.targets')" Text="$([System.String]::Format('$(ErrorText)', '$(NuGetPackageRoot)boost_log_setup-vc141.1.64.0.0\build\native\boost_log_setup-vc141.targets'))" />
-    <Error Condition="!Exists('$(NuGetPackageRoot)boost_program_options-vc141.1.64.0.0\build\native\boost_program_options-vc141.targets')" Text="$([System.String]::Format('$(ErrorText)', '$(NuGetPackageRoot)boost_program_options-vc141.1.64.0.0\build\native\boost_program_options-vc141.targets'))" />
-    <Error Condition="!Exists('$(NuGetPackageRoot)boost_regex-vc141.1.64.0.0\build\native\boost_regex-vc141.targets')" Text="$([System.String]::Format('$(ErrorText)', '$(NuGetPackageRoot)boost_regex-vc141.1.64.0.0\build\native\boost_regex-vc141.targets'))" />
-    <Error Condition="!Exists('$(NuGetPackageRoot)boost_system-vc141.1.64.0.0\build\native\boost_system-vc141.targets')" Text="$([System.String]::Format('$(ErrorText)', '$(NuGetPackageRoot)boost_system-vc141.1.64.0.0\build\native\boost_system-vc141.targets'))" />
-    <Error Condition="!Exists('$(NuGetPackageRoot)boost_thread-vc141.1.64.0.0\build\native\boost_thread-vc141.targets')" Text="$([System.String]::Format('$(ErrorText)', '$(NuGetPackageRoot)boost_thread-vc141.1.64.0.0\build\native\boost_thread-vc141.targets'))" />
     <Error Condition="!Exists('$(NuGetPackageRoot)secp256k1_vc141.0.1.0.16\build\native\secp256k1_vc141.targets')" Text="$([System.String]::Format('$(ErrorText)', '$(NuGetPackageRoot)secp256k1_vc141.0.1.0.16\build\native\secp256k1_vc141.targets'))" />
   </Target>
 </Project>
diff --git a/builds/msvc/vs2017/libbitcoin-consensus/packages.config b/builds/msvc/vs2017/libbitcoin-consensus/packages.config
index d4b17cce..cdb371a2 100644
--- a/builds/msvc/vs2017/libbitcoin-consensus/packages.config
+++ b/builds/msvc/vs2017/libbitcoin-consensus/packages.config
@@ -6,18 +6,5 @@
  |
  -->
 <packages>
-  <package id="boost" version="1.64.0.0" targetFramework="Native" />
-  <package id="boost_atomic-vc141" version="1.64.0.0" targetFramework="Native" />
-  <package id="boost_chrono-vc141" version="1.64.0.0" targetFramework="Native" />
-  <package id="boost_date_time-vc141" version="1.64.0.0" targetFramework="Native" />
-  <package id="boost_filesystem-vc141" version="1.64.0.0" targetFramework="Native" />
-  <package id="boost_iostreams-vc141" version="1.64.0.0" targetFramework="Native" />
-  <package id="boost_locale-vc141" version="1.64.0.0" targetFramework="Native" />
-  <package id="boost_log-vc141" version="1.64.0.0" targetFramework="Native" />
-  <package id="boost_log_setup-vc141" version="1.64.0.0" targetFramework="Native" />
-  <package id="boost_program_options-vc141" version="1.64.0.0" targetFramework="Native" />
-  <package id="boost_regex-vc141" version="1.64.0.0" targetFramework="Native" />
-  <package id="boost_system-vc141" version="1.64.0.0" targetFramework="Native" />
-  <package id="boost_thread-vc141" version="1.64.0.0" targetFramework="Native" />
   <package id="secp256k1_vc141" version="0.1.0.16" targetFramework="Native" />
 </packages>
diff --git a/configure.ac b/configure.ac
index b64eeda6..2e5ea04c 100644
--- a/configure.ac
+++ b/configure.ac
@@ -347,19 +347,9 @@ AC_CHECK_HEADERS([sys/endian.h],
 
 # Check dependencies.
 #==============================================================================
-# Require Boost of at least version 1.55.0 if in gcc and output ${boost_CPPFLAGS/LDFLAGS}.
+# Require Boost of at least version 1.57.0 and output ${boost_CPPFLAGS/LDFLAGS}.
 #------------------------------------------------------------------------------
-AS_CASE([${CC}], [*gcc*],
-    [AX_BOOST_BASE([1.55.0],
-        [AC_SUBST([boost_CPPFLAGS], [${BOOST_CPPFLAGS}])
-         AC_SUBST([boost_LDFLAGS], [${BOOST_LDFLAGS}])
-         AC_MSG_NOTICE([boost_CPPFLAGS : ${boost_CPPFLAGS}])
-         AC_MSG_NOTICE([boost_LDFLAGS : ${boost_LDFLAGS}])],
-        [AC_MSG_ERROR([Boost 1.55.0 or later is required but was not found.])])])
-
-# Require Boost of at least version 1.57.0 if in clang and output ${boost_CPPFLAGS/LDFLAGS}.
-#------------------------------------------------------------------------------
-AS_CASE([${CC}], [*clang*],
+AS_CASE([${CC}], [*],
     [AX_BOOST_BASE([1.57.0],
         [AC_SUBST([boost_CPPFLAGS], [${BOOST_CPPFLAGS}])
          AC_SUBST([boost_LDFLAGS], [${BOOST_LDFLAGS}])