diff --git a/core/src/lib.rs b/core/src/lib.rs
index dd50489e..ba7cc2a9 100644
--- a/core/src/lib.rs
+++ b/core/src/lib.rs
@@ -17,7 +17,6 @@
 #![warn(missing_docs)]
 #![warn(unused_extern_crates)]
 
-#[cfg(not(tarpaulin_include))]
 #[macro_use]
 pub mod macros;
 
diff --git a/core/src/macros.rs b/core/src/macros.rs
index 956c2d02..94ab3112 100644
--- a/core/src/macros.rs
+++ b/core/src/macros.rs
@@ -1,192 +1,5 @@
-//! Useful macros for implementing new chains
+//! Macro for defining a new hash type.
 
-#[macro_export]
-/// Implement `serde::Serialize` and `serde::Deserialize` by passing through to the hex
-macro_rules! impl_hex_serde {
-    ($item:ty) => {
-        impl serde::Serialize for $item {
-            fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
-            where
-                S: serde::Serializer,
-            {
-                let s = $crate::ser::ByteFormat::serialize_hex(self);
-                serializer.serialize_str(&s)
-            }
-        }
-
-        impl<'de> serde::Deserialize<'de> for $item {
-            fn deserialize<D>(deserializer: D) -> Result<$item, D::Error>
-            where
-                D: serde::Deserializer<'de>,
-            {
-                let s: &str = serde::Deserialize::deserialize(deserializer)?;
-                <$item as $crate::ser::ByteFormat>::deserialize_hex(s)
-                    .map_err(|e| serde::de::Error::custom(e.to_string()))
-            }
-        }
-    };
-}
-
-#[macro_export]
-/// Wrap a prefixed vector of bytes (`u8`) in a newtype, and implement convenience functions for
-/// it.
-macro_rules! wrap_prefixed_byte_vector {
-    (
-        $(#[$outer:meta])*
-        $wrapper_name:ident
-    ) => {
-        $(#[$outer])*
-        #[derive(Clone, Debug, Eq, PartialEq, Default, Hash, PartialOrd, Ord)]
-        pub struct $wrapper_name(Vec<u8>);
-
-        impl $crate::ser::ByteFormat for $wrapper_name {
-            type Error = $crate::ser::SerError;
-
-            fn serialized_length(&self) -> usize {
-                let mut length = self.len();
-                length += self.len_prefix() as usize;
-                length
-            }
-
-            fn read_from<R>(reader: &mut R) -> Result<Self, Self::Error>
-            where
-                R: std::io::Read
-            {
-                Ok(coins_core::ser::read_prefix_vec(reader)?.into())
-            }
-
-            fn write_to<W>(&self, writer: &mut W) -> Result<usize, Self::Error>
-            where
-                W: std::io::Write
-            {
-                coins_core::ser::write_prefix_vec(writer, &self.0)
-            }
-        }
-
-        impl_hex_serde!($wrapper_name);
-
-        impl std::convert::AsRef<[u8]> for $wrapper_name {
-            fn as_ref(&self) -> &[u8] {
-                &self.0[..]
-            }
-        }
-
-        impl $wrapper_name {
-            /// Instantate a new wrapped vector
-            pub fn new(v: Vec<u8>) -> Self {
-                Self(v)
-            }
-
-            /// Construct an empty wrapped vector instance.
-            pub fn null() -> Self {
-                Self(vec![])
-            }
-
-            /// Return a reference to the underlying bytes
-            pub fn items(&self) -> &[u8] {
-                &self.0
-            }
-
-            /// Set the underlying items vector.
-            pub fn set_items(&mut self, v: Vec<u8>) {
-                self.0 = v
-            }
-
-            /// Push an item to the item vector.
-            pub fn push(&mut self, i: u8) {
-                self.0.push(i)
-            }
-
-            /// Return the length of the item vector.
-            pub fn len(&self) -> usize {
-                self.0.len()
-            }
-
-            /// Return true if the length of the item vector is 0.
-            pub fn is_empty(&self) -> bool {
-                self.len() == 0
-            }
-
-            /// Determine the byte-length of the vector length prefix
-            pub fn len_prefix(&self) -> u8 {
-                $crate::ser::prefix_byte_len(self.len() as u64)
-            }
-
-            /// Insert an item at the specified index.
-            pub fn insert(&mut self, index: usize, i: u8) {
-                self.0.insert(index, i)
-            }
-        }
-
-        impl From<&[u8]> for $wrapper_name {
-            fn from(v: &[u8]) -> Self {
-                Self(v.to_vec())
-            }
-        }
-
-        impl From<Vec<u8>> for $wrapper_name {
-            fn from(v: Vec<u8>) -> Self {
-                Self(v)
-            }
-        }
-
-        impl std::ops::Index<usize> for $wrapper_name {
-            type Output = u8;
-
-            fn index(&self, index: usize) -> &Self::Output {
-                &self.0[index]
-            }
-        }
-
-        impl std::ops::Index<std::ops::Range<usize>> for $wrapper_name {
-            type Output = [u8];
-
-            fn index(&self, range: std::ops::Range<usize>) -> &[u8] {
-                &self.0[range]
-            }
-        }
-
-        impl std::ops::IndexMut<usize> for $wrapper_name {
-            fn index_mut(&mut self, index: usize) -> &mut Self::Output {
-                &mut self.0[index]
-            }
-        }
-
-        impl std::iter::Extend<u8> for $wrapper_name {
-            fn extend<I: std::iter::IntoIterator<Item=u8>>(&mut self, iter: I) {
-                self.0.extend(iter)
-            }
-        }
-
-        impl std::iter::IntoIterator for $wrapper_name {
-            type Item = u8;
-            type IntoIter = std::vec::IntoIter<u8>;
-
-            fn into_iter(self) -> Self::IntoIter {
-                self.0.into_iter()
-            }
-        }
-    }
-}
-
-#[macro_export]
-/// Implement conversion between script types by passing via `as_ref().into()`
-macro_rules! impl_script_conversion {
-    ($t1:ty, $t2:ty) => {
-        impl From<&$t2> for $t1 {
-            fn from(t: &$t2) -> $t1 {
-                t.as_ref().into()
-            }
-        }
-        impl From<&$t1> for $t2 {
-            fn from(t: &$t1) -> $t2 {
-                t.as_ref().into()
-            }
-        }
-    };
-}
-
-#[macro_export]
 /// Instantiate a new marked digest. Wraps the output of some type that implemented `digest::Digest`
 macro_rules! marked_digest {
     (