diff --git a/stix2/test/v21/test_deterministic_ids.py b/stix2/test/v21/test_deterministic_ids.py
new file mode 100644
index 0000000..6eab1c8
--- /dev/null
+++ b/stix2/test/v21/test_deterministic_ids.py
@@ -0,0 +1,153 @@
+from collections import OrderedDict
+import datetime
+import uuid
+
+import six
+
+import stix2.base
+import stix2.canonicalization.Canonicalize
+from stix2.properties import (
+    BooleanProperty, DictionaryProperty, ExtensionsProperty, FloatProperty,
+    IDProperty, IntegerProperty, ListProperty, StringProperty,
+    TimestampProperty, TypeProperty,
+)
+import stix2.v21.base
+
+SCO_DET_ID_NAMESPACE = uuid.UUID("00abedb4-aa42-466c-9c01-fed23315a9b7")
+
+
+def _uuid_from_id(id_):
+    dd_idx = id_.index("--")
+    uuid_str = id_[dd_idx+2:]
+    uuid_ = uuid.UUID(uuid_str)
+
+    return uuid_
+
+
+def _make_uuid5(name):
+    """
+    Make a STIX 2.1+ compliant UUIDv5 from a "name".
+    """
+    if six.PY3:
+        uuid_ = uuid.uuid5(SCO_DET_ID_NAMESPACE, name)
+    else:
+        uuid_ = uuid.uuid5(
+            SCO_DET_ID_NAMESPACE, name.encode("utf-8"),
+        )
+
+    return uuid_
+
+
+def test_no_contrib_props_defined():
+
+    class SomeSCO(stix2.v21.base._Observable):
+        _type = "some-sco"
+        _properties = OrderedDict((
+            ('type', TypeProperty(_type, spec_version='2.1')),
+            ('id', IDProperty(_type, spec_version='2.1')),
+            (
+                'extensions', ExtensionsProperty(
+                    spec_version='2.1', enclosing_type=_type,
+                )
+            ),
+        ))
+        _id_contributing_properties = []
+
+    sco = SomeSCO()
+    uuid_ = _uuid_from_id(sco["id"])
+
+    assert uuid_.variant == uuid.RFC_4122
+    assert uuid_.version == 4
+
+
+def test_no_contrib_props_given():
+
+    class SomeSCO(stix2.v21.base._Observable):
+        _type = "some-sco"
+        _properties = OrderedDict((
+            ('type', TypeProperty(_type, spec_version='2.1')),
+            ('id', IDProperty(_type, spec_version='2.1')),
+            (
+                'extensions', ExtensionsProperty(
+                    spec_version='2.1', enclosing_type=_type,
+                )
+            ),
+            ('value', StringProperty()),
+        ))
+        _id_contributing_properties = ['value']
+
+    sco = SomeSCO()
+    uuid_ = _uuid_from_id(sco["id"])
+
+    assert uuid_.variant == uuid.RFC_4122
+    assert uuid_.version == 4
+
+
+def test_json_compatible_prop_values():
+    class SomeSCO(stix2.v21.base._Observable):
+        _type = "some-sco"
+        _properties = OrderedDict((
+            ('type', TypeProperty(_type, spec_version='2.1')),
+            ('id', IDProperty(_type, spec_version='2.1')),
+            (
+                'extensions', ExtensionsProperty(
+                    spec_version='2.1', enclosing_type=_type,
+                )
+            ),
+            ('string', StringProperty()),
+            ('int', IntegerProperty()),
+            ('float', FloatProperty()),
+            ('bool', BooleanProperty()),
+            ('list', ListProperty(IntegerProperty())),
+            ('dict', DictionaryProperty(spec_version="2.1")),
+        ))
+        _id_contributing_properties = [
+            'string', 'int', 'float', 'bool', 'list', 'dict',
+        ]
+
+    obj = {
+        "string": "abc",
+        "int": 1,
+        "float": 1.5,
+        "bool": True,
+        "list": [1, 2, 3],
+        "dict": {"a": 1, "b": [2], "c": "three"},
+    }
+
+    sco = SomeSCO(**obj)
+
+    can_json = stix2.canonicalization.Canonicalize.canonicalize(obj, utf8=False)
+    expected_uuid5 = _make_uuid5(can_json)
+    actual_uuid5 = _uuid_from_id(sco["id"])
+
+    assert actual_uuid5 == expected_uuid5
+
+
+def test_json_incompatible_timestamp_value():
+    class SomeSCO(stix2.v21.base._Observable):
+        _type = "some-sco"
+        _properties = OrderedDict((
+            ('type', TypeProperty(_type, spec_version='2.1')),
+            ('id', IDProperty(_type, spec_version='2.1')),
+            (
+                'extensions', ExtensionsProperty(
+                    spec_version='2.1', enclosing_type=_type,
+                )
+            ),
+            ('timestamp', TimestampProperty()),
+        ))
+        _id_contributing_properties = ['timestamp']
+
+    ts = datetime.datetime(1987, 1, 2, 3, 4, 5, 678900)
+
+    sco = SomeSCO(timestamp=ts)
+
+    obj = {
+        "timestamp": "1987-01-02T03:04:05.6789Z",
+    }
+
+    can_json = stix2.canonicalization.Canonicalize.canonicalize(obj, utf8=False)
+    expected_uuid5 = _make_uuid5(can_json)
+    actual_uuid5 = _uuid_from_id(sco["id"])
+
+    assert actual_uuid5 == expected_uuid5