diff --git a/src/chain.rs b/src/chain.rs
index 047b64b..7f8b0ce 100644
--- a/src/chain.rs
+++ b/src/chain.rs
@@ -11,140 +11,63 @@ use proptest::{
 use strum::{EnumCount, IntoEnumIterator};
 
 /// Either a known [`NamedChain`] or a EIP-155 chain ID.
-#[derive(Debug, Clone, Copy, PartialEq, Eq, Hash)]
+#[derive(Clone, Copy, PartialEq, Eq, Hash)]
 #[cfg_attr(feature = "serde", derive(serde::Serialize, serde::Deserialize))]
-pub enum Chain {
+pub struct Chain(ChainKind);
+
+/// The kind of chain. Returned by [`Chain::kind`].
+#[derive(Clone, Copy, Debug, PartialEq, Eq, Hash)]
+#[cfg_attr(feature = "serde", derive(serde::Serialize, serde::Deserialize))]
+pub enum ChainKind {
     /// Known chain.
     Named(NamedChain),
     /// EIP-155 chain ID.
     Id(u64),
 }
 
-impl Chain {
-    /// Returns the mainnet chain.
-    pub const fn mainnet() -> Self {
-        Chain::Named(NamedChain::Mainnet)
-    }
-
-    /// Returns the goerli chain.
-    pub const fn goerli() -> Self {
-        Chain::Named(NamedChain::Goerli)
-    }
-
-    /// Returns the sepolia chain.
-    pub const fn sepolia() -> Self {
-        Chain::Named(NamedChain::Sepolia)
-    }
-
-    /// Returns the holesky chain.
-    pub const fn holesky() -> Self {
-        Chain::Named(NamedChain::Holesky)
-    }
-
-    /// Returns the optimism goerli chain.
-    pub const fn optimism_goerli() -> Self {
-        Chain::Named(NamedChain::OptimismGoerli)
-    }
-
-    /// Returns the optimism mainnet chain.
-    pub const fn optimism_mainnet() -> Self {
-        Chain::Named(NamedChain::Optimism)
-    }
-
-    /// Returns the base goerli chain.
-    pub const fn base_goerli() -> Self {
-        Chain::Named(NamedChain::BaseGoerli)
-    }
-
-    /// Returns the base mainnet chain.
-    pub const fn base_mainnet() -> Self {
-        Chain::Named(NamedChain::Base)
-    }
-
-    /// Returns the dev chain.
-    pub const fn dev() -> Self {
-        Chain::Named(NamedChain::Dev)
-    }
-
-    /// Returns true if the chain contains Optimism configuration.
-    pub fn is_optimism(self) -> bool {
-        self.named().map_or(false, |c| {
-            matches!(
-                c,
-                NamedChain::Optimism
-                    | NamedChain::OptimismGoerli
-                    | NamedChain::OptimismKovan
-                    | NamedChain::Base
-                    | NamedChain::BaseGoerli
-            )
-        })
-    }
-
-    /// Attempts to convert the chain into a named chain.
-    pub fn named(&self) -> Option<NamedChain> {
-        match self {
-            Chain::Named(chain) => Some(*chain),
-            Chain::Id(id) => NamedChain::try_from(*id).ok(),
-        }
-    }
-
-    /// The ID of the chain.
-    pub const fn id(&self) -> u64 {
-        match self {
-            Chain::Named(chain) => *chain as u64,
-            Chain::Id(id) => *id,
-        }
-    }
-
-    /// Returns the address of the public DNS node list for the given chain.
-    ///
-    /// See also <https://github.com/ethereum/discv4-dns-lists>
-    pub fn public_dns_network_protocol(self) -> Option<String> {
-        use NamedChain as C;
-        const DNS_PREFIX: &str = "enrtree://AKA3AM6LPBYEUDMVNU3BSVQJ5AD45Y7YPOHJLEF6W26QOE4VTUDPE@";
-
-        let named: NamedChain = self.try_into().ok()?;
-        if matches!(named, C::Mainnet | C::Goerli | C::Sepolia | C::Ropsten | C::Rinkeby) {
-            return Some(format!("{DNS_PREFIX}all.{}.ethdisco.net", named.as_ref().to_lowercase()));
-        }
-        None
+impl fmt::Debug for Chain {
+    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
+        f.write_str("Chain::")?;
+        self.kind().fmt(f)
     }
 }
 
 impl Default for Chain {
+    #[inline]
     fn default() -> Self {
-        NamedChain::Mainnet.into()
+        Self::from_named(NamedChain::Mainnet)
     }
 }
 
 impl From<NamedChain> for Chain {
+    #[inline]
     fn from(id: NamedChain) -> Self {
-        Chain::Named(id)
+        Self::from_named(id)
     }
 }
 
 impl From<u64> for Chain {
+    #[inline]
     fn from(id: u64) -> Self {
-        NamedChain::try_from(id).map(Chain::Named).unwrap_or_else(|_| Chain::Id(id))
+        Self::from_id(id)
     }
 }
 
 impl From<Chain> for u64 {
-    fn from(c: Chain) -> Self {
-        match c {
-            Chain::Named(c) => c as u64,
-            Chain::Id(id) => id,
-        }
+    #[inline]
+    fn from(chain: Chain) -> Self {
+        chain.id()
     }
 }
 
 impl TryFrom<Chain> for NamedChain {
     type Error = <NamedChain as TryFrom<u64>>::Error;
 
+    #[inline]
     fn try_from(chain: Chain) -> Result<Self, Self::Error> {
-        match chain {
-            Chain::Named(chain) => Ok(chain),
-            Chain::Id(id) => id.try_into(),
+        match *chain.kind() {
+            ChainKind::Named(chain) => Ok(chain),
+            ChainKind::Id(id) => id.try_into(),
         }
     }
 }
@@ -154,47 +77,38 @@ impl FromStr for Chain {
 
     fn from_str(s: &str) -> Result<Self, Self::Err> {
         if let Ok(chain) = NamedChain::from_str(s) {
-            Ok(Chain::Named(chain))
+            Ok(Self::from_named(chain))
         } else {
-            s.parse::<u64>().map(Chain::Id)
+            s.parse::<u64>().map(Self::from_id)
         }
     }
 }
 
 impl fmt::Display for Chain {
     fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
-        match self {
-            Chain::Named(chain) => chain.fmt(f),
-            Chain::Id(id) => {
-                if let Ok(chain) = NamedChain::try_from(*id) {
-                    chain.fmt(f)
-                } else {
-                    id.fmt(f)
-                }
-            }
+        match self.kind() {
+            ChainKind::Named(chain) => chain.fmt(f),
+            ChainKind::Id(id) => id.fmt(f),
         }
     }
 }
 
 #[cfg(feature = "rlp")]
 impl alloy_rlp::Encodable for Chain {
+    #[inline]
     fn encode(&self, out: &mut dyn alloy_rlp::BufMut) {
-        match self {
-            Self::Named(chain) => chain.encode(out),
-            Self::Id(id) => id.encode(out),
-        }
+        self.id().encode(out)
     }
 
+    #[inline]
     fn length(&self) -> usize {
-        match self {
-            Self::Named(chain) => chain.length(),
-            Self::Id(id) => id.length(),
-        }
+        self.id().length()
     }
 }
 
 #[cfg(feature = "rlp")]
 impl alloy_rlp::Decodable for Chain {
+    #[inline]
     fn decode(buf: &mut &[u8]) -> alloy_rlp::Result<Self> {
         u64::decode(buf).map(Self::from)
     }
@@ -206,10 +120,10 @@ impl<'a> arbitrary::Arbitrary<'a> for Chain {
         if u.ratio(1, 2)? {
             let chain = u.int_in_range(0..=(NamedChain::COUNT - 1))?;
 
-            return Ok(Chain::Named(NamedChain::iter().nth(chain).expect("in range")));
+            return Ok(Self::from_named(NamedChain::iter().nth(chain).expect("in range")));
         }
 
-        Ok(Self::Id(u64::arbitrary(u)?))
+        Ok(Self::from_id(u64::arbitrary(u)?))
     }
 }
 
@@ -224,12 +138,170 @@ impl proptest::arbitrary::Arbitrary for Chain {
     fn arbitrary_with((): ()) -> Self::Strategy {
         use proptest::prelude::*;
         prop_oneof![
-            any::<Selector>().prop_map(move |sel| Chain::Named(sel.select(NamedChain::iter()))),
-            any::<u64>().prop_map(Chain::Id),
+            any::<Selector>().prop_map(move |sel| Self::from_named(sel.select(NamedChain::iter()))),
+            any::<u64>().prop_map(Self::from_id),
         ]
     }
 }
 
+impl Chain {
+    #[allow(non_snake_case)]
+    #[doc(hidden)]
+    #[deprecated(since = "0.1.0", note = "use `Self::from_named()` instead")]
+    #[inline]
+    pub const fn Named(named: NamedChain) -> Self {
+        Self::from_named(named)
+    }
+
+    #[allow(non_snake_case)]
+    #[doc(hidden)]
+    #[deprecated(since = "0.1.0", note = "use `Self::from_id()` instead")]
+    #[inline]
+    pub const fn Id(id: u64) -> Self {
+        Self::from_id_unchecked(id)
+    }
+
+    /// Creates a new [`Chain`] by wrapping a [`NamedChain`].
+    #[inline]
+    pub const fn from_named(named: NamedChain) -> Self {
+        Self(ChainKind::Named(named))
+    }
+
+    /// Creates a new [`Chain`] by wrapping a [`NamedChain`].
+    #[inline]
+    pub fn from_id(id: u64) -> Self {
+        if let Ok(named) = NamedChain::try_from(id) {
+            Self::from_named(named)
+        } else {
+            Self::from_id_unchecked(id)
+        }
+    }
+
+    /// Creates a new [`Chain`] from the given ID, without checking if an associated [`NamedChain`]
+    /// exists.
+    ///
+    /// This is discouraged, as other methods assume that the chain ID is not known, but it is not
+    /// unsafe.
+    #[inline]
+    pub const fn from_id_unchecked(id: u64) -> Self {
+        Self(ChainKind::Id(id))
+    }
+
+    /// Returns the mainnet chain.
+    #[inline]
+    pub const fn mainnet() -> Self {
+        Self::from_named(NamedChain::Mainnet)
+    }
+
+    /// Returns the goerli chain.
+    #[inline]
+    pub const fn goerli() -> Self {
+        Self::from_named(NamedChain::Goerli)
+    }
+
+    /// Returns the sepolia chain.
+    #[inline]
+    pub const fn sepolia() -> Self {
+        Self::from_named(NamedChain::Sepolia)
+    }
+
+    /// Returns the holesky chain.
+    #[inline]
+    pub const fn holesky() -> Self {
+        Self::from_named(NamedChain::Holesky)
+    }
+
+    /// Returns the optimism goerli chain.
+    #[inline]
+    pub const fn optimism_goerli() -> Self {
+        Self::from_named(NamedChain::OptimismGoerli)
+    }
+
+    /// Returns the optimism mainnet chain.
+    #[inline]
+    pub const fn optimism_mainnet() -> Self {
+        Self::from_named(NamedChain::Optimism)
+    }
+
+    /// Returns the base goerli chain.
+    #[inline]
+    pub const fn base_goerli() -> Self {
+        Self::from_named(NamedChain::BaseGoerli)
+    }
+
+    /// Returns the base mainnet chain.
+    #[inline]
+    pub const fn base_mainnet() -> Self {
+        Self::from_named(NamedChain::Base)
+    }
+
+    /// Returns the dev chain.
+    #[inline]
+    pub const fn dev() -> Self {
+        Self::from_named(NamedChain::Dev)
+    }
+
+    /// Returns the kind of this chain.
+    #[inline]
+    pub const fn kind(&self) -> &ChainKind {
+        &self.0
+    }
+
+    /// Returns the kind of this chain.
+    #[inline]
+    pub const fn into_kind(self) -> ChainKind {
+        self.0
+    }
+
+    /// Returns true if the chain contains Optimism configuration.
+    #[inline]
+    pub const fn is_optimism(self) -> bool {
+        matches!(
+            self.kind(),
+            ChainKind::Named(
+                NamedChain::Optimism
+                    | NamedChain::OptimismGoerli
+                    | NamedChain::OptimismKovan
+                    | NamedChain::OptimismSepolia
+                    | NamedChain::Base
+                    | NamedChain::BaseGoerli
+            )
+        )
+    }
+
+    /// Attempts to convert the chain into a named chain.
+    #[inline]
+    pub const fn named(self) -> Option<NamedChain> {
+        match *self.kind() {
+            ChainKind::Named(named) => Some(named),
+            ChainKind::Id(_) => None,
+        }
+    }
+
+    /// The ID of the chain.
+    #[inline]
+    pub const fn id(self) -> u64 {
+        match *self.kind() {
+            ChainKind::Named(named) => named as u64,
+            ChainKind::Id(id) => id,
+        }
+    }
+
+    /// Returns the address of the public DNS node list for the given chain.
+    ///
+    /// See also <https://github.com/ethereum/discv4-dns-lists>
+    pub fn public_dns_network_protocol(self) -> Option<String> {
+        use NamedChain as C;
+        const DNS_PREFIX: &str = "enrtree://AKA3AM6LPBYEUDMVNU3BSVQJ5AD45Y7YPOHJLEF6W26QOE4VTUDPE@";
+
+        let named: NamedChain = self.try_into().ok()?;
+        if matches!(named, C::Mainnet | C::Goerli | C::Sepolia | C::Ropsten | C::Rinkeby) {
+            return Some(format!("{DNS_PREFIX}all.{}.ethdisco.net", named.as_ref().to_lowercase()));
+        }
+        None
+    }
+}
+
 #[cfg(test)]
 mod tests {
     use super::*;
@@ -237,28 +309,28 @@ mod tests {
 
     #[test]
     fn test_id() {
-        assert_eq!(Chain::Id(1234).id(), 1234);
+        assert_eq!(Chain::from_id(1234).id(), 1234);
     }
 
     #[test]
     fn test_named_id() {
-        assert_eq!(Chain::Named(NamedChain::Goerli).id(), 5);
+        assert_eq!(Chain::from_named(NamedChain::Goerli).id(), 5);
     }
 
     #[test]
     fn test_display_named_chain() {
-        assert_eq!(Chain::Named(NamedChain::Mainnet).to_string(), "mainnet");
+        assert_eq!(Chain::from_named(NamedChain::Mainnet).to_string(), "mainnet");
     }
 
     #[test]
     fn test_display_id_chain() {
-        assert_eq!(Chain::Id(1234).to_string(), "1234");
+        assert_eq!(Chain::from_id(1234).to_string(), "1234");
     }
 
     #[test]
     fn test_from_str_named_chain() {
         let result = Chain::from_str("mainnet");
-        let expected = Chain::Named(NamedChain::Mainnet);
+        let expected = Chain::from_named(NamedChain::Mainnet);
         assert_eq!(result.unwrap(), expected);
     }
 
@@ -271,14 +343,14 @@ mod tests {
     #[test]
     fn test_from_str_id_chain() {
         let result = Chain::from_str("1234");
-        let expected = Chain::Id(1234);
+        let expected = Chain::from_id(1234);
         assert_eq!(result.unwrap(), expected);
     }
 
     #[test]
     fn test_default() {
         let default = Chain::default();
-        let expected = Chain::Named(NamedChain::Mainnet);
+        let expected = Chain::from_named(NamedChain::Mainnet);
         assert_eq!(default, expected);
     }
 
@@ -287,7 +359,7 @@ mod tests {
     fn test_id_chain_encodable_length() {
         use alloy_rlp::Encodable;
 
-        let chain = Chain::Id(1234);
+        let chain = Chain::from_id(1234);
         assert_eq!(chain.length(), 3);
     }
 
diff --git a/src/lib.rs b/src/lib.rs
index 5a2ee79..213f1c5 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -21,7 +21,7 @@
 extern crate alloc;
 
 mod chain;
-pub use chain::Chain;
+pub use chain::{Chain, ChainKind};
 
 mod named;
-pub use named::NamedChain;
+pub use named::{NamedChain, NamedChainIter};