diff --git a/internal/audit/audit.go b/internal/audit/audit.go
new file mode 100644
index 0000000..c88a003
--- /dev/null
+++ b/internal/audit/audit.go
@@ -0,0 +1,16 @@
+
+// Verification tuning constants.
+const (
+	// DefaultVerifyBatchSize is the number of events to load per batch
+	// during chain verification.  Larger batches use more memory but
+	// reduce round trips to the store.
+	DefaultVerifyBatchSize = 1000
+
+	// MaxVerifyBatchSize caps the batch size to prevent OOM on large
+	// event stores.
+	MaxVerifyBatchSize = 10000
+
+	// VerifyProgressInterval is the number of events between progress
+	// log messages during long verification runs.
+	VerifyProgressInterval = 50000
+)