diff --git a/README.md b/README.md
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--- a/README.md
+++ b/README.md
@@ -55,3 +55,7 @@ Successful JSON response:
 ## Notes
 
 - TODO: Add a small 1-day cache
+
+- Original code idea: <https://github.com/Unipisa/dm-cups/blob/d304b95d5b4aabafca1cc2fde0f828ea93238255/dm-cups#L61>
+
+- The first iteration of this project was generated this ChatGPT conversation: <https://chat.openai.com/share/de5438e8-660c-49c4-80de-7aae3df870cf>