diff --git a/_specs/51_attack_resistance.md b/_specs/ecip-1097.md
similarity index 98%
rename from _specs/51_attack_resistance.md
rename to _specs/ecip-1097.md
index a1413497b..d8b05a979 100644
--- a/_specs/51_attack_resistance.md
+++ b/_specs/ecip-1097.md
@@ -1,9 +1,9 @@
 ---
-ecip: <ECIP number>
-title: 51% Attack Resistance 
+ecip: 1097
+title: Checkpointing based 51% attack resistance 
 lang: en
-author: Dimitris Karakostas, Radek Tkaczyk, Romain Pellerin, Brian McKenna
-discussions-to: https://github.com/ethereumclassic/ECIPs/issues/348 | https://github.com/input-output-hk/ECIPs/issues/1
+author: Dimitris Karakostas (dimkarakostas), Radek Tkaczyk (rtkaczyk), Romain Pellerin (romainPellerin), Brian McKenna (@bpmckenna)
+discussions-to: https://github.com/input-output-hk/ECIPs/issues/1
 status: Draft
 type: Standards Track
 category: Core