diff --git a/poc-memory/src/query.rs b/poc-memory/src/query.rs
index fdc76b9..5c5c112 100644
--- a/poc-memory/src/query.rs
+++ b/poc-memory/src/query.rs
@@ -180,7 +180,8 @@ fn resolve_field(field: &str, key: &str, store: &Store, graph: &Graph) -> Option
         "retrievals"    => Some(Value::Num(node.retrievals as f64)),
         "uses"          => Some(Value::Num(node.uses as f64)),
         "wrongs"        => Some(Value::Num(node.wrongs as f64)),
-        "created"       => Some(Value::Str(node.created.clone())),
+        "created"       => Some(Value::Num(node.created_at as f64)),
+        "timestamp"     => Some(Value::Num(node.timestamp as f64)),
         "content"       => Some(Value::Str(node.content.clone())),
         "degree"        => Some(Value::Num(graph.degree(key) as f64)),
         "community_id"  => {