diff --git a/sxt/proof/sumcheck/constant.cc b/sxt/proof/sumcheck/constant.cc
new file mode 100644
index 00000000..39619780
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+++ b/sxt/proof/sumcheck/constant.cc
@@ -0,0 +1,17 @@
+/** Proofs GPU - Space and Time's cryptographic proof algorithms on the CPU and GPU.
+ *
+ * Copyright 2024-present Space and Time Labs, Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+#include "sxt/proof/sumcheck/constant.h"
diff --git a/sxt/proof/sumcheck/constant.h b/sxt/proof/sumcheck/constant.h
new file mode 100644
index 00000000..aa70ad9a
--- /dev/null
+++ b/sxt/proof/sumcheck/constant.h
@@ -0,0 +1,26 @@
+/** Proofs GPU - Space and Time's cryptographic proof algorithms on the CPU and GPU.
+ *
+ * Copyright 2024-present Space and Time Labs, Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+#pragma once
+
+namespace sxt::prfsk {
+//--------------------------------------------------------------------------------------------------
+// max_degree_v
+//--------------------------------------------------------------------------------------------------
+// the maximum degree of the round polynomial
+// used in sumcheck
+constexpr unsigned max_degree_v = 5u;
+} // namespace sxt::prfsk