diff --git a/include/wrapping_dap_chain_common.h b/include/wrapping_dap_chain_common.h
index 7feec9c36fdc987611c0422b2529acccabe93f0a..d73dede947bd83066b62b1d05192f6ef6ca880f5 100644
--- a/include/wrapping_dap_chain_common.h
+++ b/include/wrapping_dap_chain_common.h
@@ -2,6 +2,7 @@
 #define _WRAPPING_DAP_CHAIN_COMMON_
 #include <Python.h>
 #include "dap_chain_common.h"
+#include "libdap_crypto_key_python.h"
 
 #ifdef __cplusplus
 extern "C" {
@@ -73,10 +74,14 @@ typedef struct PyDapChainAddr{
 
 PyObject *dap_chain_addr_to_str_py(PyObject *self, PyObject *args);
 PyObject *dap_chain_addr_from_str_py(PyObject *self, PyObject *args);
+PyObject *dap_chain_addr_fill_py(PyObject *self, PyObject *args);
+PyObject *dap_chain_addr_check_sum_py(PyObject *self, PyObject *args);
 
 PyMethodDef DapChainAddrMethods[] = {
     {"toStr", (PyCFunction)dap_chain_addr_to_str_py, METH_VARARGS, ""},
     {"fromStr", (PyCFunction)dap_chain_addr_from_str_py, METH_VARARGS | METH_STATIC, ""},
+    {"fill", (PyCFunction)dap_chain_addr_fill_py, METH_VARARGS, ""},
+    {"checkSum", (PyCFunction)dap_chain_addr_check_sum_py, METH_VARARGS, ""},
     {NULL, NULL, 0, NULL}
 };
 
diff --git a/src/wrapping_dap_chain_common.c b/src/wrapping_dap_chain_common.c
index 21cf5647f80433645cc3de95525440edf64d5eac..9bb16e5d4ff20de9b1d9531a677f5e24e517f541 100644
--- a/src/wrapping_dap_chain_common.c
+++ b/src/wrapping_dap_chain_common.c
@@ -28,6 +28,19 @@ PyObject *dap_chain_addr_from_str_py(PyObject *self, PyObject *args){
     return Py_BuildValue("O", obj);
 }
 
+PyObject *dap_chain_addr_fill_py(PyObject *self, PyObject *args){
+    PyObject *key;
+    PyObject *net_id;
+    if (!PyArg_ParseTuple(args, "O|O", &key, &net_id))
+        return NULL;
+    dap_chain_addr_fill(((PyDapChainAddrObject*)self)->addr, ((PyCryptoKeyObject*)key)->key, &(((PyDapChainNetIdObject*)net_id)->net_id));
+}
+
+PyObject *dap_chain_addr_check_sum_py(PyObject *self, PyObject *args){
+    int res = dap_chain_addr_check_sum(((PyDapChainAddrObject*)self)->addr);
+    return PyLong_FromLong(res);
+}
+
 PyObject *dap_chain_net_id_from_str_py(PyObject *self, PyObject *args){
     const char *str;
     if (!PyArg_ParseTuple(args, "s", &str))