Add extrinsic_record.json for validator verification

extrinsic_record.json

@@ -0,0 +1,4 @@
+{
+  "extrinsic": "7559570-11",
+  "hotkey": "5H1JztCepU5uEWGdUmAYED6ZAigU8rKxhepD7fx47JbHNWY7"
+}