diff --git a/include/wrapping_dap_chain_datum.h b/include/wrapping_dap_chain_datum.h
new file mode 100644
index 0000000000000000000000000000000000000000..bfbdeb560f816d63e70d1f6c161fa6f11941b7e6
--- /dev/null
+++ b/include/wrapping_dap_chain_datum.h
@@ -0,0 +1,163 @@
+#ifndef _WRAPPING_DAP_CHAIN_DATUM_
+#define _WRAPPING_DAP_CHAIN_DATUM_
+#include "Python.h"
+#include "dap_chain_datum.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/* DAP Chain datum type id */
+typedef struct PyDapChainDatumTypeId{
+ PyObject_HEAD
+ dap_chain_datum_typeid_t *type_id;
+}PyDapChainDatumTypeIdObject;
+
+static PyTypeObject DapChainDatumTypeIdObject_DapChainDatumTypeIdObjectType = {
+ PyVarObject_HEAD_INIT(NULL, 0)
+ "CellFrame.ChainDatumTypeId", /* tp_name */
+ sizeof(PyDapChainDatumTypeIdObject), /* tp_basicsize */
+ 0, /* tp_itemsize */
+ 0, /* tp_dealloc */
+ 0, /* tp_print */
+ 0, /* tp_getattr */
+ 0, /* tp_setattr */
+ 0, /* tp_reserved */
+ 0, /* tp_repr */
+ 0, /* tp_as_number */
+ 0, /* tp_as_sequence */
+ 0, /* tp_as_mapping */
+ 0, /* tp_hash */
+ 0, /* tp_call */
+ 0, /* tp_str */
+ 0, /* tp_getattro */
+ 0, /* tp_setattro */
+ 0, /* tp_as_buffer */
+ Py_TPFLAGS_DEFAULT |
+ Py_TPFLAGS_BASETYPE, /* tp_flags */
+ "Chain datum type id object", /* tp_doc */
+ 0, /* tp_traverse */
+ 0, /* tp_clear */
+ 0, /* tp_richcompare */
+ 0, /* tp_weaklistoffset */
+ 0, /* tp_iter */
+ 0, /* tp_iternext */
+ 0, /* tp_methods */
+ 0, /* tp_members */
+ 0, /* tp_getset */
+ 0, /* tp_base */
+ 0, /* tp_dict */
+ 0, /* tp_descr_get */
+ 0, /* tp_descr_set */
+ 0, /* tp_dictoffset */
+ 0, /* tp_init */
+ 0, /* tp_alloc */
+ PyType_GenericNew, /* tp_new */
+};
+/* -------------------------------- */
+
+typedef struct PyDapChainDatum{
+ PyObject_HEAD
+ dap_chain_datum_t *datum;
+}PyDapChainDatumObject;
+
+//void PyDapChainDatumObject_dealloc(PyDapChainDatumObject* object);
+PyObject *DapChainDatumObject_new(PyTypeObject *type_object, PyObject *args, PyObject *kwds);
+
+static PyTypeObject DapChainDatumObject_DapChainDatumObjectType = {
+ PyVarObject_HEAD_INIT(NULL, 0)
+ "CellFrame.ChainDatum", /* tp_name */
+ sizeof(PyDapChainDatumObject), /* tp_basicsize */
+ 0, /* tp_itemsize */
+ 0, /* tp_dealloc */
+ 0, /* tp_print */
+ 0, /* tp_getattr */
+ 0, /* tp_setattr */
+ 0, /* tp_reserved */
+ 0, /* tp_repr */
+ 0, /* tp_as_number */
+ 0, /* tp_as_sequence */
+ 0, /* tp_as_mapping */
+ 0, /* tp_hash */
+ 0, /* tp_call */
+ 0, /* tp_str */
+ 0, /* tp_getattro */
+ 0, /* tp_setattro */
+ 0, /* tp_as_buffer */
+ Py_TPFLAGS_DEFAULT |
+ Py_TPFLAGS_BASETYPE, /* tp_flags */
+ "Chain datum object", /* tp_doc */
+ 0, /* tp_traverse */
+ 0, /* tp_clear */
+ 0, /* tp_richcompare */
+ 0, /* tp_weaklistoffset */
+ 0, /* tp_iter */
+ 0, /* tp_iternext */
+ 0, /* tp_methods */
+ 0, /* tp_members */
+ 0, /* tp_getset */
+ 0, /* tp_base */
+ 0, /* tp_dict */
+ 0, /* tp_descr_get */
+ 0, /* tp_descr_set */
+ 0, /* tp_dictoffset */
+ 0, /* tp_init */
+ 0, /* tp_alloc */
+ PyDapChainDatumObject_new, /* tp_new */
+};
+/* -------------------------------- */
+
+/* DAP Chain datum iter*/
+typedef struct PyDapChainDatumIter{
+ PyObject_HEAD
+ dap_chain_datum_iter_t *datum_iter;
+}PyDapChainDatumIterObject;
+
+static PyTypeObject DapChainDatumIterObject_DapChainDatumIterObjectType = {
+ PyVarObject_HEAD_INIT(NULL, 0)
+ "CellFrame.ChainDatumIter", /* tp_name */
+ sizeof(PyDapChainDatumIterObject), /* tp_basicsize */
+ 0, /* tp_itemsize */
+ 0, /* tp_dealloc */
+ 0, /* tp_print */
+ 0, /* tp_getattr */
+ 0, /* tp_setattr */
+ 0, /* tp_reserved */
+ 0, /* tp_repr */
+ 0, /* tp_as_number */
+ 0, /* tp_as_sequence */
+ 0, /* tp_as_mapping */
+ 0, /* tp_hash */
+ 0, /* tp_call */
+ 0, /* tp_str */
+ 0, /* tp_getattro */
+ 0, /* tp_setattro */
+ 0, /* tp_as_buffer */
+ Py_TPFLAGS_DEFAULT |
+ Py_TPFLAGS_BASETYPE, /* tp_flags */
+ "Chain datum iter object", /* tp_doc */
+ 0, /* tp_traverse */
+ 0, /* tp_clear */
+ 0, /* tp_richcompare */
+ 0, /* tp_weaklistoffset */
+ 0, /* tp_iter */
+ 0, /* tp_iternext */
+ 0, /* tp_methods */
+ 0, /* tp_members */
+ 0, /* tp_getset */
+ 0, /* tp_base */
+ 0, /* tp_dict */
+ 0, /* tp_descr_get */
+ 0, /* tp_descr_set */
+ 0, /* tp_dictoffset */
+ 0, /* tp_init */
+ 0, /* tp_alloc */
+ PyType_GenericNew, /* tp_new */
+};
+/* -------------------------------- */
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif //_WRAPPING_DAP_CHAIN_DATUM_
diff --git a/src/wrapping_dap_chain_datum.c b/src/wrapping_dap_chain_datum.c
new file mode 100644
index 0000000000000000000000000000000000000000..c9ef627bbb8388ece5e635803ea3ef9642fd1fe5
--- /dev/null
+++ b/src/wrapping_dap_chain_datum.c
@@ -0,0 +1,15 @@
+#include "wrapping_dap_chain_datum.h"
+
+//void PyDapChainDatumObject_dealloc(PyDapChainDatumObject* object){
+//}
+
+PyObject *PyDapChainDatumObject_new(PyTypeObject *type_object, PyObject *args, PyObject *kwds){
+ uint16_t type_id;
+ PyBytesObject *bytes;
+ size_t data_size;
+ if (!PyArg_ParseTuple(args, "h|S|n", &type_id, &bytes, &data_size))
+ return NULL;
+ PyDapChainDatumObject *obj = (PyDapChainDatumObject*)PyType_GenericNew(type_object, args, kwds);
+ obj->datum = dap_chain_datum_create(type_id, bytes, data_size);
+ return (PyObject *)obj;
+}