diff --git a/README.md b/README.md
index 8a8fbbe..6d12339 100644
--- a/README.md
+++ b/README.md
@@ -1 +1,17 @@
 # bunnystream-api-python
+
+
+### Usage to Sign the CDN Streams
+
+To sign the Stream videos before loading it on your player. Example, on your mobile app player where you cannot embed the Bunny stream code.
+
+
+```py
+from bunny-sign import *
+url = "https://{CDN}/{VideoID}/playlist.m3u8"
+securityKey = "{APIKEY}"
+path_allowed = "/"
+url_to_load = sign_bcdn_url(url, securityKey, path_allowed, True)
+```
+
+Replace `CDN`, `VideoID`, `APIKEY` with your relevant values.
\ No newline at end of file
diff --git a/bunny-sign.py b/bunny-sign.py
new file mode 100644
index 0000000..be15ebd
--- /dev/null
+++ b/bunny-sign.py
@@ -0,0 +1,55 @@
+from urllib.parse import urlparse, parse_qs
+import hashlib, time, base64
+
+def sign_bcdn_url(url, security_key, path_allowed=None, is_directory_token=False, expiration_time=3600, user_ip=None, countries_allowed=None, countries_blocked=None, referers_allowed=None):
+    if countries_allowed is not None:
+        url += '?' if urlparse(url).query == "" else '&'
+        url += f'token_countries={countries_allowed}'
+    
+    if countries_blocked is not None:
+        url += '?' if urlparse(url).query == "" else '&'
+        url += f'token_countries_blocked={countries_blocked}'
+    
+    if referers_allowed is not None:
+        url += '?' if urlparse(url).query == "" else '&'
+        url += f'token_referer={referers_allowed}'
+    
+    url_scheme = urlparse(url).scheme
+    url_host = urlparse(url).hostname
+    url_path = urlparse(url).path
+    url_query = urlparse(url).query
+
+    parameters = parse_qs(url_query)
+    
+    signature_path = url_path
+    if path_allowed is not None:
+        signature_path = path_allowed
+        parameters["token_path"] = signature_path
+    
+    expires = int(time.time()) + expiration_time
+
+    parameters = dict(sorted(parameters.items()))
+
+    parameter_data = ''
+    parameter_data_url = ''
+    
+    for key, value in parameters.items():
+        parameter_data += f'{key}={value}'
+        urlvalue = value.replace('/', '%2F')
+        parameter_data_url += f'&{key}={urlvalue}'
+
+    hashable_base = security_key + signature_path + str(expires)
+    
+    if user_ip is not None:
+        hashable_base += user_ip
+    
+    hashable_base += parameter_data
+    token = hashlib.sha256(hashable_base.encode()).digest()
+    token = base64.b64encode(token).decode()
+    token = token.replace('+', '-').replace('/', '_').rstrip('=')
+    
+    if is_directory_token:
+        return f'{url_scheme}://{url_host}/bcdn_token={token}&expires={expires}{parameter_data_url}{url_path}'
+    else:
+        return f'{url_scheme}://{url_host}{url_path}?token={token}{parameter_data_url}&expires={expires}'
+