diff --git a/src/consensus.rs b/src/consensus.rs
index b2b5d4c..c7d32d5 100644
--- a/src/consensus.rs
+++ b/src/consensus.rs
@@ -1,4 +1,12 @@
+use std::fmt;
+
 pub struct ChainIndex {
 	pub height: u64,
 	pub id: [u8; 32],
+}
+
+impl fmt::Display for ChainIndex {
+	fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
+		write!(f, "{}:{}", self.height, hex::encode(&self.id))
+	}
 }
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