diff --git a/nano/lib/CMakeLists.txt b/nano/lib/CMakeLists.txt
index 271091dce..9612fdf80 100644
--- a/nano/lib/CMakeLists.txt
+++ b/nano/lib/CMakeLists.txt
@@ -21,6 +21,10 @@ add_library(
   ${platform_sources}
   asio.hpp
   asio.cpp
+  block_sideband.hpp
+  block_sideband.cpp
+  block_type.hpp
+  block_type.cpp
   blockbuilders.hpp
   blockbuilders.cpp
   blocks.hpp
diff --git a/nano/lib/block_sideband.cpp b/nano/lib/block_sideband.cpp
new file mode 100644
index 000000000..e69de29bb
diff --git a/nano/lib/block_sideband.hpp b/nano/lib/block_sideband.hpp
new file mode 100644
index 000000000..dc7e8a428
--- /dev/null
+++ b/nano/lib/block_sideband.hpp
@@ -0,0 +1,68 @@
+#pragma once
+
+#include <nano/lib/block_type.hpp>
+#include <nano/lib/epoch.hpp>
+#include <nano/lib/numbers.hpp>
+#include <nano/lib/stream.hpp>
+#include <nano/lib/timer.hpp>
+
+#include <cstdint>
+
+namespace nano
+{
+class object_stream;
+}
+
+namespace nano
+{
+class block_details
+{
+	static_assert (std::is_same<std::underlying_type<nano::epoch>::type, uint8_t> (), "Epoch enum is not the proper type");
+	static_assert (static_cast<uint8_t> (nano::epoch::max) < (1 << 5), "Epoch max is too large for the sideband");
+
+public:
+	block_details () = default;
+	block_details (nano::epoch const epoch_a, bool const is_send_a, bool const is_receive_a, bool const is_epoch_a);
+	static constexpr size_t size ()
+	{
+		return 1;
+	}
+	bool operator== (block_details const & other_a) const;
+	void serialize (nano::stream &) const;
+	bool deserialize (nano::stream &);
+	nano::epoch epoch{ nano::epoch::epoch_0 };
+	bool is_send{ false };
+	bool is_receive{ false };
+	bool is_epoch{ false };
+
+private:
+	uint8_t packed () const;
+	void unpack (uint8_t);
+
+public: // Logging
+	void operator() (nano::object_stream &) const;
+};
+
+std::string state_subtype (nano::block_details const);
+
+class block_sideband final
+{
+public:
+	block_sideband () = default;
+	block_sideband (nano::account const &, nano::block_hash const &, nano::amount const &, uint64_t const, nano::seconds_t const local_timestamp, nano::block_details const &, nano::epoch const source_epoch_a);
+	block_sideband (nano::account const &, nano::block_hash const &, nano::amount const &, uint64_t const, nano::seconds_t const local_timestamp, nano::epoch const epoch_a, bool const is_send, bool const is_receive, bool const is_epoch, nano::epoch const source_epoch_a);
+	void serialize (nano::stream &, nano::block_type) const;
+	bool deserialize (nano::stream &, nano::block_type);
+	static size_t size (nano::block_type);
+	nano::block_hash successor{ 0 };
+	nano::account account{};
+	nano::amount balance{ 0 };
+	uint64_t height{ 0 };
+	uint64_t timestamp{ 0 };
+	nano::block_details details;
+	nano::epoch source_epoch{ nano::epoch::epoch_0 };
+
+public: // Logging
+	void operator() (nano::object_stream &) const;
+};
+} // namespace nano
diff --git a/nano/lib/block_type.cpp b/nano/lib/block_type.cpp
new file mode 100644
index 000000000..4afb9b0fd
--- /dev/null
+++ b/nano/lib/block_type.cpp
@@ -0,0 +1,13 @@
+#include <nano/lib/block_type.hpp>
+
+#include <magic_enum.hpp>
+
+std::string_view nano::to_string (nano::block_type type)
+{
+	return magic_enum::enum_name (type);
+}
+
+void nano::serialize_block_type (nano::stream & stream, const nano::block_type & type)
+{
+	nano::write (stream, type);
+}
diff --git a/nano/lib/block_type.hpp b/nano/lib/block_type.hpp
new file mode 100644
index 000000000..020722e31
--- /dev/null
+++ b/nano/lib/block_type.hpp
@@ -0,0 +1,26 @@
+#pragma once
+
+#include <nano/lib/stream.hpp>
+
+#include <cstdint>
+#include <string>
+
+namespace nano
+{
+enum class block_type : uint8_t
+{
+	invalid = 0,
+	not_a_block = 1,
+	send = 2,
+	receive = 3,
+	open = 4,
+	change = 5,
+	state = 6
+};
+
+std::string_view to_string (block_type);
+/**
+ * Serialize block type as an 8-bit value
+ */
+void serialize_block_type (nano::stream &, nano::block_type const &);
+} // namespace nano
diff --git a/nano/lib/blocks.cpp b/nano/lib/blocks.cpp
index 3a13bb386..0ad893339 100644
--- a/nano/lib/blocks.cpp
+++ b/nano/lib/blocks.cpp
@@ -1443,11 +1443,6 @@ std::shared_ptr<nano::block> nano::deserialize_block_json (boost::property_tree:
 	return result;
 }
 
-void nano::serialize_block_type (nano::stream & stream, const nano::block_type & type)
-{
-	nano::write (stream, type);
-}
-
 void nano::serialize_block (nano::stream & stream_a, nano::block const & block_a)
 {
 	nano::serialize_block_type (stream_a, block_a.type ());
@@ -1986,8 +1981,3 @@ void nano::block_sideband::operator() (nano::object_stream & obs) const
 	obs.write ("source_epoch", source_epoch);
 	obs.write ("details", details);
 }
-
-std::string_view nano::to_string (nano::block_type type)
-{
-	return magic_enum::enum_name (type);
-}
diff --git a/nano/lib/blocks.hpp b/nano/lib/blocks.hpp
index 19c31d95e..0fb5aee4a 100644
--- a/nano/lib/blocks.hpp
+++ b/nano/lib/blocks.hpp
@@ -1,6 +1,7 @@
 #pragma once
 
 #include <nano/crypto/blake2/blake2.h>
+#include <nano/lib/block_sideband.hpp>
 #include <nano/lib/epoch.hpp>
 #include <nano/lib/errors.hpp>
 #include <nano/lib/numbers.hpp>
@@ -21,70 +22,6 @@ namespace nano
 class block_visitor;
 class mutable_block_visitor;
 
-enum class block_type : uint8_t
-{
-	invalid = 0,
-	not_a_block = 1,
-	send = 2,
-	receive = 3,
-	open = 4,
-	change = 5,
-	state = 6
-};
-
-std::string_view to_string (block_type);
-
-class block_details
-{
-	static_assert (std::is_same<std::underlying_type<nano::epoch>::type, uint8_t> (), "Epoch enum is not the proper type");
-	static_assert (static_cast<uint8_t> (nano::epoch::max) < (1 << 5), "Epoch max is too large for the sideband");
-
-public:
-	block_details () = default;
-	block_details (nano::epoch const epoch_a, bool const is_send_a, bool const is_receive_a, bool const is_epoch_a);
-	static constexpr size_t size ()
-	{
-		return 1;
-	}
-	bool operator== (block_details const & other_a) const;
-	void serialize (nano::stream &) const;
-	bool deserialize (nano::stream &);
-	nano::epoch epoch{ nano::epoch::epoch_0 };
-	bool is_send{ false };
-	bool is_receive{ false };
-	bool is_epoch{ false };
-
-private:
-	uint8_t packed () const;
-	void unpack (uint8_t);
-
-public: // Logging
-	void operator() (nano::object_stream &) const;
-};
-
-std::string state_subtype (nano::block_details const);
-
-class block_sideband final
-{
-public:
-	block_sideband () = default;
-	block_sideband (nano::account const &, nano::block_hash const &, nano::amount const &, uint64_t const, nano::seconds_t const local_timestamp, nano::block_details const &, nano::epoch const source_epoch_a);
-	block_sideband (nano::account const &, nano::block_hash const &, nano::amount const &, uint64_t const, nano::seconds_t const local_timestamp, nano::epoch const epoch_a, bool const is_send, bool const is_receive, bool const is_epoch, nano::epoch const source_epoch_a);
-	void serialize (nano::stream &, nano::block_type) const;
-	bool deserialize (nano::stream &, nano::block_type);
-	static size_t size (nano::block_type);
-	nano::block_hash successor{ 0 };
-	nano::account account{};
-	nano::amount balance{ 0 };
-	uint64_t height{ 0 };
-	uint64_t timestamp{ 0 };
-	nano::block_details details;
-	nano::epoch source_epoch{ nano::epoch::epoch_0 };
-
-public: // Logging
-	void operator() (nano::object_stream &) const;
-};
-
 class block
 {
 public:
@@ -446,10 +383,6 @@ using block_uniquer = nano::uniquer<nano::uint256_union, nano::block>;
 std::shared_ptr<nano::block> deserialize_block (nano::stream &);
 std::shared_ptr<nano::block> deserialize_block (nano::stream &, nano::block_type, nano::block_uniquer * = nullptr);
 std::shared_ptr<nano::block> deserialize_block_json (boost::property_tree::ptree const &, nano::block_uniquer * = nullptr);
-/**
- * Serialize block type as an 8-bit value
- */
-void serialize_block_type (nano::stream &, nano::block_type const &);
 /**
  * Serialize a block prefixed with an 8-bit typecode
  */
diff --git a/nano/store/block.hpp b/nano/store/block.hpp
index 826aafc41..c0d252a65 100644
--- a/nano/store/block.hpp
+++ b/nano/store/block.hpp
@@ -1,5 +1,6 @@
 #pragma once
 
+#include <nano/lib/block_sideband.hpp>
 #include <nano/lib/blocks.hpp>
 #include <nano/lib/numbers.hpp>
 #include <nano/store/component.hpp>