diff --git a/extra/hashcash/authors.txt b/extra/hashcash/authors.txt
new file mode 100755
index 0000000000..e69de29bb2
diff --git a/extra/hashcash/hashcash.factor b/extra/hashcash/hashcash.factor
new file mode 100755
index 0000000000..fe7cf10bd3
--- /dev/null
+++ b/extra/hashcash/hashcash.factor
@@ -0,0 +1,4 @@
+! Copyright (C) 2009 Your name.
+! See http://factorcode.org/license.txt for BSD license.
+USING: ;
+IN: hashcash