diff --git a/script/research/x3dh/README.md b/script/research/x3dh/README.md
new file mode 100644
index 000000000..0d606b369
--- /dev/null
+++ b/script/research/x3dh/README.md
@@ -0,0 +1,2 @@
+* [Signal's Double Ratchet Algorithm](https://signal.org/docs/specifications/doubleratchet/)
+