diff --git a/blockchain.md b/blockchain.md
new file mode 100644
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--- /dev/null
+++ b/blockchain.md
@@ -0,0 +1,12 @@
+# Blockchain
+
+- A [[technology]].
+- Patently [[useful]]. Can be used to build [[distributed systems]].
+  - [[cryptocurrency]]
+  - [[voting]]
+- Often a [[joke]] in technology circles because of the amount of hype it's amassed.
+
+
+[//begin]: # "Autogenerated link references for markdown compatibility"
+[useful]: useful "Useful"
+[//end]: # "Autogenerated link references"
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diff --git a/polkadot.md b/polkadot.md
index 5c2924b65..41a2de8da 100644
--- a/polkadot.md
+++ b/polkadot.md
@@ -6,4 +6,5 @@
 
 [//begin]: # "Autogenerated link references for markdown compatibility"
 [go]: go "Go"
+[blockchain]: blockchain "Blockchain"
 [//end]: # "Autogenerated link references"
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