diff --git a/fideslog/api/database/registrations.py b/fideslog/api/database/registrations.py
index 8d8c6b0..e7d1762 100644
--- a/fideslog/api/database/registrations.py
+++ b/fideslog/api/database/registrations.py
@@ -38,8 +38,8 @@ def create(database: Session, registration: Registration) -> None:
             client_id=registration.client_id,
             email=registration.email,
             organization=registration.organization,
-            created_at=datetime.now(timezone.utc),
-            updated_at=datetime.now(timezone.utc),
+            created_at=registration.created_at,
+            updated_at=registration.updated_at,
         )
     )
 
diff --git a/fideslog/api/schemas/registration.py b/fideslog/api/schemas/registration.py
index 54fa923..a8b7b70 100644
--- a/fideslog/api/schemas/registration.py
+++ b/fideslog/api/schemas/registration.py
@@ -1,6 +1,6 @@
 # pylint: disable= no-self-argument, no-self-use
 
-from datetime import datetime
+from datetime import datetime, timezone
 
 from pydantic import BaseModel, EmailStr, Field, validator
 
@@ -23,11 +23,11 @@ class Registration(BaseModel):
         description="The organization in which the user is registered.",
     )
     created_at: datetime = Field(
-        None,
+        datetime.now(tz=timezone.utc),
         description="The UTC timestamp when the registration occurred, in ISO 8601 format. Must include the UTC timezone, and represent a datetime in the past.",
     )
     updated_at: datetime = Field(
-        None,
+        datetime.now(tz=timezone.utc),
         description="The UTC timestamp when the registration was last updated, in ISO 8601 format. Must include the UTC timezone, and represent a datetime in the past.",
     )
 
diff --git a/fideslog/sdk/python/client.py b/fideslog/sdk/python/client.py
index e8a7a90..e9723cd 100644
--- a/fideslog/sdk/python/client.py
+++ b/fideslog/sdk/python/client.py
@@ -92,7 +92,14 @@ def register(self, registration: Registration) -> None:
         """
 
         __set_event_loop()
-        run(self.__send(registration))
+        run(self.send_async(registration))
+
+    async def register_async(self, registration: Registration) -> None:
+        """
+        Asynchronously record a new `Registration`.
+        """
+
+        await self.send_async(registration)
 
     def send(self, event: AnalyticsEvent) -> None:
         """
@@ -100,7 +107,38 @@ def send(self, event: AnalyticsEvent) -> None:
         """
 
         __set_event_loop()
-        run(self.__send(event))
+        run(self.send_async(event))
+
+    async def send_async(
+        self,
+        event_or_registration: Union[AnalyticsEvent, Registration],
+    ) -> None:
+        """
+        Asynchronously record a new `AnalyticsEvent` or `Registration`.
+        """
+
+        async with ClientSession(
+            self.server_url,
+            headers=REQUIRED_HEADERS,
+            timeout=ClientTimeout(connect=3.05, total=120),
+        ) as session:
+            try:
+                async with session.post(
+                    url=(
+                        "/events"
+                        if isinstance(event_or_registration, AnalyticsEvent)
+                        else "/registrations"
+                    ),
+                    json=self.__get_request_payload(event_or_registration),
+                ) as resp:
+                    resp.raise_for_status()
+
+            except ClientConnectionError as err:
+                raise UnreachableServerError(err.__str__()) from err
+            except ClientResponseError as err:
+                raise AnalyticsSendError(err.message, err.status) from err
+            except Exception as err:
+                raise UnknownError(err) from err
 
     def __get_request_payload(
         self,
@@ -153,34 +191,3 @@ def __get_analytics_payload(self, event: AnalyticsEvent) -> Dict:
                 payload[extra] = event_dict[extra]
 
         return payload
-
-    async def __send(
-        self,
-        event_or_registration: Union[AnalyticsEvent, Registration],
-    ) -> None:
-        """
-        Asynchronously record a new `AnalyticsEvent` or `Registration`.
-        """
-
-        async with ClientSession(
-            self.server_url,
-            headers=REQUIRED_HEADERS,
-            timeout=ClientTimeout(connect=3.05, total=120),
-        ) as session:
-            try:
-                async with session.post(
-                    url=(
-                        "/events"
-                        if isinstance(event_or_registration, AnalyticsEvent)
-                        else "/registrations"
-                    ),
-                    json=self.__get_request_payload(event_or_registration),
-                ) as resp:
-                    resp.raise_for_status()
-
-            except ClientConnectionError as err:
-                raise UnreachableServerError(err.__str__()) from err
-            except ClientResponseError as err:
-                raise AnalyticsSendError(err.message, err.status) from err
-            except Exception as err:
-                raise UnknownError(err) from err
diff --git a/fideslog/sdk/python/registration.py b/fideslog/sdk/python/registration.py
index 1a750da..d578de6 100644
--- a/fideslog/sdk/python/registration.py
+++ b/fideslog/sdk/python/registration.py
@@ -8,12 +8,20 @@ class Registration:
     Represents a user registering their information.
     """
 
-    def __init__(self, email: str, organization: str) -> None:
+    def __init__(
+        self,
+        email: str,
+        organization: str,
+        created_at: datetime = datetime.now(tz=timezone.utc),
+        updated_at: datetime = datetime.now(tz=timezone.utc),
+    ) -> None:
         """
         Define a new user registration.
 
         :param email: The user's email address.
         :param organization: The user's organization.
+        :param created_at: The UTC timestamp when the registration occurred, in ISO 8601 format. Must include the UTC timezone, and represent a datetime in the past.
+        :param updated_at: The UTC timestamp when the registration was last updated, in ISO 8601 format. Must include the UTC timezone, and represent a datetime in the past.
         """
 
         try:
@@ -23,8 +31,8 @@ def __init__(self, email: str, organization: str) -> None:
             assert len(organization) > 0, "organization must be provided"
             self.organization = organization
 
-            self.created_at = datetime.now(timezone.utc)
-            self.updated_at = datetime.now(timezone.utc)
+            self.created_at = created_at
+            self.updated_at = updated_at
 
         except AssertionError as err:
             raise InvalidEventError(str(err)) from None