diff --git a/zcash_primitives/src/block.rs b/zcash_primitives/src/block.rs
new file mode 100644
index 000000000..816975d0b
--- /dev/null
+++ b/zcash_primitives/src/block.rs
@@ -0,0 +1,32 @@
+use std::ops::Deref;
+
+#[derive(Clone, Copy, Debug, PartialEq, Eq, Hash)]
+pub struct BlockHash(pub [u8; 32]);
+
+/// A Zcash block header.
+pub struct BlockHeader(BlockHeaderData);
+
+impl Deref for BlockHeader {
+    type Target = BlockHeaderData;
+
+    fn deref(&self) -> &BlockHeaderData {
+        &self.0
+    }
+}
+
+pub struct BlockHeaderData {
+    pub version: i32,
+    pub prev_block: BlockHash,
+    pub merkle_root: [u8; 32],
+    pub final_sapling_root: [u8; 32],
+    pub time: u32,
+    pub bits: u32,
+    pub nonce: [u8; 32],
+    pub solution: Vec<u8>,
+}
+
+impl BlockHeaderData {
+    pub fn freeze(self) -> BlockHeader {
+        BlockHeader(self)
+    }
+}
diff --git a/zcash_primitives/src/lib.rs b/zcash_primitives/src/lib.rs
index 247520938..97b826f50 100644
--- a/zcash_primitives/src/lib.rs
+++ b/zcash_primitives/src/lib.rs
@@ -10,6 +10,7 @@ extern crate sapling_crypto;
 
 use sapling_crypto::jubjub::JubjubBls12;
 
+pub mod block;
 pub mod sapling;
 mod serialize;
 pub mod transaction;