diff --git a/faucet/constraints.py b/faucet/constraints.py
new file mode 100644
index 00000000..e65009c1
--- /dev/null
+++ b/faucet/constraints.py
@@ -0,0 +1,26 @@
+from core.constraints import *
+from .models import DonationReceipt, Chain, ClaimReceipt
+
+class DonationConstraint(ConstraintVerification):
+    _param_keys = [
+        ConstraintParam.CHAIN
+    ]
+
+    def is_observed(self, *args, **kwargs):
+        chain_pk = self._param_values[ConstraintParam.CHAIN]
+        return DonationReceipt.objects\
+        .filter(chain__pk=chain_pk)\
+        .filter(user_profile = self.user_profile)\
+        .filter(status=ClaimReceipt.PROCESSED_FOR_TOKENTAP)\
+        .exists()
+    
+class OptimismDonationConstraint(DonationConstraint):
+    _param_keys = []
+
+    def is_observed(self, *args, **kwargs):
+        try:
+            chain = Chain.objects.get(chain_id=10)
+        except:
+            return False
+        self._param_values[ConstraintParam.CHAIN] = chain.pk
+        return super().is_observed(*args, **kwargs)
\ No newline at end of file
diff --git a/prizetap/migrations/0030_alter_constraint_name.py b/prizetap/migrations/0030_alter_constraint_name.py
new file mode 100644
index 00000000..461c71e0
--- /dev/null
+++ b/prizetap/migrations/0030_alter_constraint_name.py
@@ -0,0 +1,18 @@
+# Generated by Django 4.0.4 on 2023-10-07 08:33
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('prizetap', '0029_constraint_icon_url'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='constraint',
+            name='name',
+            field=models.CharField(choices=[('BrightIDMeetVerification', 'BrightIDMeetVerification'), ('BrightIDAuraVerification', 'BrightIDAuraVerification'), ('HaveUnitapPass', 'HaveUnitapPass'), ('NotHaveUnitapPass', 'NotHaveUnitapPass'), ('OptimismDonationConstraint', 'OptimismDonationConstraint')], max_length=255, unique=True),
+        ),
+    ]
diff --git a/prizetap/models.py b/prizetap/models.py
index 3370e466..9eeefd45 100644
--- a/prizetap/models.py
+++ b/prizetap/models.py
@@ -1,5 +1,6 @@
 from django.db import models
 from faucet.models import Chain
+from faucet.constraints import OptimismDonationConstraint
 from django.utils import timezone
 from django.utils.translation import gettext_lazy as _
 from authentication.models import NetworkTypes, UserProfile
@@ -10,7 +11,11 @@
 
 
 class Constraint(UserConstraint):
-    constraints = UserConstraint.constraints + [HaveUnitapPass, NotHaveUnitapPass]
+    constraints = UserConstraint.constraints + [
+        HaveUnitapPass, 
+        NotHaveUnitapPass,
+        OptimismDonationConstraint
+    ]
     name = UserConstraint.create_name_field(constraints)
 
 
diff --git a/prizetap/views.py b/prizetap/views.py
index c33fa467..3c697686 100644
--- a/prizetap/views.py
+++ b/prizetap/views.py
@@ -7,6 +7,7 @@
 from rest_framework.views import APIView
 from faucet.models import Chain
 from faucet.serializers import SmallChainSerializer
+from faucet.constraints import *
 from .models import Raffle, RaffleEntry, Constraint
 from .serializers import (
     RaffleSerializer,