diff --git a/src/onionrproofs/blocknoncestart.py b/src/onionrproofs/blocknoncestart.py
new file mode 100644
index 00000000..93bf4908
--- /dev/null
+++ b/src/onionrproofs/blocknoncestart.py
@@ -0,0 +1 @@
+BLOCK_NONCE_START_INT = -10000000
\ No newline at end of file