diff --git a/profile/README.md b/profile/README.md
index 1cdf29c..acb3a95 100644
--- a/profile/README.md
+++ b/profile/README.md
@@ -1,3 +1,6 @@
 ## The Coast Train Project
 
+[![Earth ArXiv Preprint
+DOI](https://img.shields.io/badge/%F0%9F%8C%8D%F0%9F%8C%8F%F0%9F%8C%8E%20EarthArXiv-doi.org%2F10.31223%2FX5Z06C-%23FF7F2A)](https://doi.org/10.31223/X5Z06C)
+
 details soon