diff --git a/src/libs/common.py b/src/libs/common.py
index b089576..678f9f5 100644
--- a/src/libs/common.py
+++ b/src/libs/common.py
@@ -43,6 +43,12 @@ def to_app_id(n: int) -> list:
     return list(n.to_bytes(32, byteorder="big"))
 
 
+def to_blob_id(n: int) -> list:
+    if n < 0:
+        raise ValueError("Input must be an unsigned integer (non-negative)")
+    return list(n.to_bytes(32, byteorder="big"))
+
+
 def random_divide_k(n, k):
     if n < k:
         raise ValueError(f"n={n} must be at least k={k} to split into {k} parts")
diff --git a/src/node/nomos_node.py b/src/node/nomos_node.py
index ce894b1..106ae2c 100644
--- a/src/node/nomos_node.py
+++ b/src/node/nomos_node.py
@@ -157,3 +157,6 @@ class NomosNode:
 
     def send_get_data_range_request(self, data):
         return self._api.da_get_range(data)
+
+    def send_get_commitments_request(self, data):
+        return self._api.da_get_commitments(data)
diff --git a/src/steps/da.py b/src/steps/da.py
index 95509b6..fbf457a 100644
--- a/src/steps/da.py
+++ b/src/steps/da.py
@@ -28,6 +28,11 @@ def prepare_get_range_request(app_id, start_index, end_index):
     return query_data
 
 
+def prepare_get_shares_commitments_request(blob_id):
+    query_data = {"blob_id": blob_id}
+    return query_data
+
+
 def response_contains_data(response):
     if response is None:
         return False
@@ -101,3 +106,23 @@ class StepsDataAvailability(StepsCommon):
             return response
 
         return get_range()
+
+    @allure.step
+    def get_shares_commitments(self, node, blob_id, **kwargs):
+
+        timeout_duration = kwargs.get("timeout_duration", 65)
+        interval = kwargs.get("interval", 0.1)
+
+        query = prepare_get_shares_commitments_request(blob_id)
+
+        @retry(stop=stop_after_delay(timeout_duration), wait=wait_fixed(interval), reraise=True)
+        def get_commitments():
+            try:
+                response = node.send_get_commitments_request(query)
+            except Exception as ex:
+                logger.error(f"Exception while retrieving commitments: {ex}")
+                raise
+
+            return response
+
+        return get_commitments()