diff --git a/src/serialize.h b/src/serialize.h
index 2d790190a0..de37fddf29 100644
--- a/src/serialize.h
+++ b/src/serialize.h
@@ -167,9 +167,9 @@ const Out& AsBase(const In& x)
     return x;
 }
 
-#define READWRITE(...) (::SerReadWriteMany(s, ser_action, __VA_ARGS__))
-#define SER_READ(obj, code) ::SerRead(s, ser_action, obj, [&](Stream& s, typename std::remove_const<Type>::type& obj) { code; })
-#define SER_WRITE(obj, code) ::SerWrite(s, ser_action, obj, [&](Stream& s, const Type& obj) { code; })
+#define READWRITE(...) (ser_action.SerReadWriteMany(s, __VA_ARGS__))
+#define SER_READ(obj, code) ser_action.SerRead(s, obj, [&](Stream& s, typename std::remove_const<Type>::type& obj) { code; })
+#define SER_WRITE(obj, code) ser_action.SerWrite(s, obj, [&](Stream& s, const Type& obj) { code; })
 
 /**
  * Implement the Ser and Unser methods needed for implementing a formatter (see Using below).
@@ -1006,17 +1006,65 @@ void Unserialize(Stream& is, std::shared_ptr<const T>& p)
     p = std::make_shared<const T>(deserialize, is);
 }
 
+/**
+ * Support for (un)serializing many things at once
+ */
+
+template <typename Stream, typename... Args>
+void SerializeMany(Stream& s, const Args&... args)
+{
+    (::Serialize(s, args), ...);
+}
+
+template <typename Stream, typename... Args>
+inline void UnserializeMany(Stream& s, Args&&... args)
+{
+    (::Unserialize(s, args), ...);
+}
 
 /**
  * Support for all macros providing or using the ser_action parameter of the SerializationOps method.
  */
 struct ActionSerialize {
-    constexpr bool ForRead() const { return false; }
+    static constexpr bool ForRead() { return false; }
+
+    template<typename Stream, typename... Args>
+    static void SerReadWriteMany(Stream& s, const Args&... args)
+    {
+        ::SerializeMany(s, args...);
+    }
+
+    template<typename Stream, typename Type, typename Fn>
+    static void SerRead(Stream& s, Type&&, Fn&&)
+    {
+    }
+
+    template<typename Stream, typename Type, typename Fn>
+    static void SerWrite(Stream& s, Type&& obj, Fn&& fn)
+    {
+        fn(s, std::forward<Type>(obj));
+    }
 };
 struct ActionUnserialize {
-    constexpr bool ForRead() const { return true; }
-};
+    static constexpr bool ForRead() { return true; }
 
+    template<typename Stream, typename... Args>
+    static void SerReadWriteMany(Stream& s, Args&&... args)
+    {
+        ::UnserializeMany(s, args...);
+    }
+
+    template<typename Stream, typename Type, typename Fn>
+    static void SerRead(Stream& s, Type&& obj, Fn&& fn)
+    {
+        fn(s, std::forward<Type>(obj));
+    }
+
+    template<typename Stream, typename Type, typename Fn>
+    static void SerWrite(Stream& s, Type&&, Fn&&)
+    {
+    }
+};
 
 /* ::GetSerializeSize implementations
  *
@@ -1063,52 +1111,6 @@ public:
     int GetVersion() const { return nVersion; }
 };
 
-template <typename Stream, typename... Args>
-void SerializeMany(Stream& s, const Args&... args)
-{
-    (::Serialize(s, args), ...);
-}
-
-template <typename Stream, typename... Args>
-inline void UnserializeMany(Stream& s, Args&&... args)
-{
-    (::Unserialize(s, args), ...);
-}
-
-template<typename Stream, typename... Args>
-inline void SerReadWriteMany(Stream& s, ActionSerialize ser_action, const Args&... args)
-{
-    ::SerializeMany(s, args...);
-}
-
-template<typename Stream, typename... Args>
-inline void SerReadWriteMany(Stream& s, ActionUnserialize ser_action, Args&&... args)
-{
-    ::UnserializeMany(s, args...);
-}
-
-template<typename Stream, typename Type, typename Fn>
-inline void SerRead(Stream& s, ActionSerialize ser_action, Type&&, Fn&&)
-{
-}
-
-template<typename Stream, typename Type, typename Fn>
-inline void SerRead(Stream& s, ActionUnserialize ser_action, Type&& obj, Fn&& fn)
-{
-    fn(s, std::forward<Type>(obj));
-}
-
-template<typename Stream, typename Type, typename Fn>
-inline void SerWrite(Stream& s, ActionSerialize ser_action, Type&& obj, Fn&& fn)
-{
-    fn(s, std::forward<Type>(obj));
-}
-
-template<typename Stream, typename Type, typename Fn>
-inline void SerWrite(Stream& s, ActionUnserialize ser_action, Type&&, Fn&&)
-{
-}
-
 template<typename I>
 inline void WriteVarInt(CSizeComputer &s, I n)
 {