diff --git a/build.ps1 b/build.ps1
index 01dfb59..8ed04b9 100644
--- a/build.ps1
+++ b/build.ps1
@@ -131,10 +131,18 @@ function BuildNuGetPackage([string]$BuildType, [string]$Arch, [string]$Version)
 	#md pkg\nuget\ZeroTier.Sockets\runtimes\win10-arm\native -Force
 
 	# Build wrapper library for C# ZeroTier.Sockets abstraction
-	csc -target:library -debug:pdbonly `
-		-pdb:pkg\nuget\ZeroTier.Sockets\bin\ZeroTier.Sockets.pdb `
-		-out:pkg\nuget\ZeroTier.Sockets\bin\ZeroTier.Sockets.dll `
-		.\src\bindings\csharp\*.cs
+	#csc -target:library -debug:pdbonly `
+	#	-pdb:pkg\nuget\ZeroTier.Sockets\bin\ZeroTier.Sockets.pdb `
+	#	-out:pkg\nuget\ZeroTier.Sockets\bin\ZeroTier.Sockets.dll `
+	#	.\src\bindings\csharp\*.cs
+
+	# Copy sources into bindings library project
+	cp .\src\bindings\csharp\*.cs .\pkg\nuget\bindings\ZeroTier.Sockets\
+
+	# Build bindings library
+	pushd ./pkg/nuget/bindings/
+	dotnet build --configuration Release
+	popd
 
 	# Build unmanaged native libzt.dll with exported P/INVOKE symbols
 	Build-Library -BuildType $BuildType -Arch $Arch -LangBinding "csharp"
@@ -145,7 +153,6 @@ function BuildNuGetPackage([string]$BuildType, [string]$Arch, [string]$Version)
 
 	# .NET Framework
 	md pkg\nuget\ZeroTier.Sockets\lib\net40 -Force
-	md pkg\nuget\ZeroTier.Sockets\lib\net403 -Force
 	md pkg\nuget\ZeroTier.Sockets\lib\net45 -Force
 	md pkg\nuget\ZeroTier.Sockets\lib\net451 -Force
 	md pkg\nuget\ZeroTier.Sockets\lib\net452 -Force
@@ -156,6 +163,19 @@ function BuildNuGetPackage([string]$BuildType, [string]$Arch, [string]$Version)
 	md pkg\nuget\ZeroTier.Sockets\lib\net471 -Force
 	md pkg\nuget\ZeroTier.Sockets\lib\net472 -Force
 	md pkg\nuget\ZeroTier.Sockets\lib\net48 -Force
+	md pkg\nuget\ZeroTier.Sockets\lib\netstandard1.3 -Force
+	md pkg\nuget\ZeroTier.Sockets\lib\netstandard1.4 -Force
+	md pkg\nuget\ZeroTier.Sockets\lib\netstandard1.5 -Force
+	md pkg\nuget\ZeroTier.Sockets\lib\netstandard1.6 -Force
+	md pkg\nuget\ZeroTier.Sockets\lib\netstandard2.0 -Force
+	md pkg\nuget\ZeroTier.Sockets\lib\netstandard2.1 -Force
+	md pkg\nuget\ZeroTier.Sockets\lib\netcoreapp1.0 -Force
+	md pkg\nuget\ZeroTier.Sockets\lib\netcoreapp1.1 -Force
+	md pkg\nuget\ZeroTier.Sockets\lib\netcoreapp2.0 -Force
+	md pkg\nuget\ZeroTier.Sockets\lib\netcoreapp2.1 -Force
+	md pkg\nuget\ZeroTier.Sockets\lib\netcoreapp2.2 -Force
+	md pkg\nuget\ZeroTier.Sockets\lib\netcoreapp3.0 -Force
+	md pkg\nuget\ZeroTier.Sockets\lib\netcoreapp3.1 -Force
 
 	# .NET "Core" 5.0 (moniker missing from microsoft documentation?)
 	md pkg\nuget\ZeroTier.Sockets\lib\net5.0 -Force
@@ -167,6 +187,13 @@ function BuildNuGetPackage([string]$BuildType, [string]$Arch, [string]$Version)
 			-Destination "pkg\nuget\ZeroTier.Sockets\lib\$folder" -Recurse
 	}
 
+	# Copy bindings library "ZeroTier.Sockets.dll"
+	$folders = Get-ChildItem .\pkg\nuget\bindings\ZeroTier.Sockets\bin\Release
+	foreach ($folder in $folders.name){
+		cp -Path ".\pkg\nuget\bindings\ZeroTier.Sockets\bin\Release\$folder\*.dll" `
+			-Destination "pkg\nuget\ZeroTier.Sockets\lib\$folder" -Recurse
+	}
+
 	# Native DLL placement
 
 	cp .\dist\win-$archAlias-pinvoke-$($BuildType.ToLower())\lib\*.dll `
diff --git a/include/version.h b/include/version.h
new file mode 100644
index 0000000..5db4ccc
--- /dev/null
+++ b/include/version.h
@@ -0,0 +1,7 @@
+#ifndef ZTS_VERSION_H
+#define ZTS_VER_CORE_STR="1.4.6"
+#define ZTS_VER_LIB_STR="1.3.4"
+#define ZTS_VER_LIB_MAJOR=1.3.4
+#define ZTS_VER_LIB_MINOR=1.3.4
+#define ZTS_VER_LIB_PATCH=1.3.4
+#endif
diff --git a/pkg/nuget/bindings/ZeroTier.Sockets/ZeroTier.Sockets.csproj b/pkg/nuget/bindings/ZeroTier.Sockets/ZeroTier.Sockets.csproj
new file mode 100644
index 0000000..306644b
--- /dev/null
+++ b/pkg/nuget/bindings/ZeroTier.Sockets/ZeroTier.Sockets.csproj
@@ -0,0 +1,7 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <TargetFrameworks>net5.0;net40;net45;net451;net452;net46;net461;net462;net47;net471;net472;net48;netcoreapp1.0;netcoreapp1.1;netcoreapp2.0;netcoreapp2.1;netcoreapp2.2;netcoreapp3.0;netcoreapp3.1;netstandard1.3;netstandard1.4;netstandard1.5;netstandard1.6;netstandard2.0;netstandard2.1</TargetFrameworks>
+  </PropertyGroup>
+
+</Project>
diff --git a/pkg/nuget/bindings/dotnet.sln b/pkg/nuget/bindings/dotnet.sln
new file mode 100644
index 0000000..10096a3
--- /dev/null
+++ b/pkg/nuget/bindings/dotnet.sln
@@ -0,0 +1,34 @@
+
+Microsoft Visual Studio Solution File, Format Version 12.00
+# Visual Studio 15
+VisualStudioVersion = 15.0.26124.0
+MinimumVisualStudioVersion = 15.0.26124.0
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "ZeroTier.Sockets", "ZeroTier.Sockets\ZeroTier.Sockets.csproj", "{D4F39F65-88E6-457D-807A-AB602AE80D7A}"
+EndProject
+Global
+	GlobalSection(SolutionConfigurationPlatforms) = preSolution
+		Debug|Any CPU = Debug|Any CPU
+		Debug|x64 = Debug|x64
+		Debug|x86 = Debug|x86
+		Release|Any CPU = Release|Any CPU
+		Release|x64 = Release|x64
+		Release|x86 = Release|x86
+	EndGlobalSection
+	GlobalSection(SolutionProperties) = preSolution
+		HideSolutionNode = FALSE
+	EndGlobalSection
+	GlobalSection(ProjectConfigurationPlatforms) = postSolution
+		{D4F39F65-88E6-457D-807A-AB602AE80D7A}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{D4F39F65-88E6-457D-807A-AB602AE80D7A}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{D4F39F65-88E6-457D-807A-AB602AE80D7A}.Debug|x64.ActiveCfg = Debug|Any CPU
+		{D4F39F65-88E6-457D-807A-AB602AE80D7A}.Debug|x64.Build.0 = Debug|Any CPU
+		{D4F39F65-88E6-457D-807A-AB602AE80D7A}.Debug|x86.ActiveCfg = Debug|Any CPU
+		{D4F39F65-88E6-457D-807A-AB602AE80D7A}.Debug|x86.Build.0 = Debug|Any CPU
+		{D4F39F65-88E6-457D-807A-AB602AE80D7A}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{D4F39F65-88E6-457D-807A-AB602AE80D7A}.Release|Any CPU.Build.0 = Release|Any CPU
+		{D4F39F65-88E6-457D-807A-AB602AE80D7A}.Release|x64.ActiveCfg = Release|Any CPU
+		{D4F39F65-88E6-457D-807A-AB602AE80D7A}.Release|x64.Build.0 = Release|Any CPU
+		{D4F39F65-88E6-457D-807A-AB602AE80D7A}.Release|x86.ActiveCfg = Release|Any CPU
+		{D4F39F65-88E6-457D-807A-AB602AE80D7A}.Release|x86.Build.0 = Release|Any CPU
+	EndGlobalSection
+EndGlobal