diff --git a/system/bitcoin/mempool.nix b/system/bitcoin/mempool.nix
new file mode 100644
index 0000000..7bed071
--- /dev/null
+++ b/system/bitcoin/mempool.nix
@@ -0,0 +1,10 @@
+{...}: {
+  services.mempool = {
+    enable = true;
+    electrumServer = "fulcrum";
+    frontend.enable = true;
+  };
+  # Set this to create an onion service to make the mempool web interface
+  # available via Tor:
+  # nix-bitcoin.onionServices.mempool-frontend.enable = true;
+}