diff --git a/src/keria/app/aiding.py b/src/keria/app/aiding.py
index 9e44a1a7..4d856150 100644
--- a/src/keria/app/aiding.py
+++ b/src/keria/app/aiding.py
@@ -384,7 +384,7 @@ def on_post(req, rep):
                     rand = body[Algos.randy]
                     hab = agent.hby.makeSignifyHab(name, serder=serder, sigers=sigers)
                     try:
-                        agent.inceptRandy(pre=serder.pre, verfers=serder.verfers, digers=serder.digers, **rand)
+                        agent.inceptRandy(pre=serder.pre, verfers=serder.verfers, digers=serder.ndigers, **rand)
                     except ValueError as e:
                         agent.hby.deleteHab(name=name)
                         raise falcon.HTTPInternalServerError(description=f"{e.args[0]}")
@@ -393,7 +393,7 @@ def on_post(req, rep):
                     extern = body[Algos.extern]
                     hab = agent.hby.makeSignifyHab(name, serder=serder, sigers=sigers)
                     try:
-                        agent.inceptExtern(pre=serder.pre, verfers=serder.verfers, digers=serder.digers, **extern)
+                        agent.inceptExtern(pre=serder.pre, verfers=serder.verfers, digers=serder.ndigers, **extern)
                     except ValueError as e:
                         agent.hby.deleteHab(name=name)
                         raise falcon.HTTPInternalServerError(description=f"{e.args[0]}")
@@ -519,12 +519,12 @@ def rotate(agent, name, body):
             rand = body[Algos.randy]
             keeper = agent.mgr.get(Algos.randy)
 
-            keeper.rotate(pre=serder.pre, verfers=serder.verfers, digers=serder.digers, **rand)
+            keeper.rotate(pre=serder.pre, verfers=serder.verfers, digers=serder.ndigers, **rand)
 
         elif Algos.group in body:
             keeper = agent.mgr.get(Algos.group)
 
-            keeper.rotate(pre=serder.pre, verfers=serder.verfers, digers=serder.digers)
+            keeper.rotate(pre=serder.pre, verfers=serder.verfers, digers=serder.ndigers)
 
             smids = httping.getRequiredParam(body, "smids")
             rmids = httping.getRequiredParam(body, "rmids")
diff --git a/src/keria/app/credentialing.py b/src/keria/app/credentialing.py
index 780d39ae..21f6207d 100644
--- a/src/keria/app/credentialing.py
+++ b/src/keria/app/credentialing.py
@@ -579,7 +579,7 @@ def on_get(req, rep, name, said):
     def outputCred(hby, rgy, said):
         out = bytearray()
         creder, prefixer, seqner, saider = rgy.reger.cloneCred(said=said)
-        chains = creder.edge
+        chains = creder.edge or dict()
         saids = []
         for key, source in chains.items():
             if key == 'd':
diff --git a/tests/app/test_aiding.py b/tests/app/test_aiding.py
index ac5870f5..8b4bef01 100644
--- a/tests/app/test_aiding.py
+++ b/tests/app/test_aiding.py
@@ -263,7 +263,7 @@ def test_identifier_collection_end(helpers):
         serder, signers = helpers.incept(salt, "signify:aid", pidx=0)
         assert len(signers) == 1
         signer0 = signers[0]
-        diger0 = serder.digers[0]
+        diger0 = serder.ndigers[0]
 
         sigers = [signer.sign(ser=serder.raw, index=0).qb64 for signer in signers]
         body = {'name': 'aid1',
@@ -448,7 +448,7 @@ def test_identifier_collection_end(helpers):
 
         # Test Group Multisig
         keys = [signer0.verfer.qb64, p1.kever.verfers[0].qb64, p2.kever.verfers[0].qb64, ]
-        ndigs = [diger0.qb64, p1.kever.digers[0].qb64, p2.kever.digers[0].qb64]
+        ndigs = [diger0.qb64, p1.kever.ndigers[0].qb64, p2.kever.ndigers[0].qb64]
 
         serder = eventing.incept(keys=keys,
                                  isith="2",
diff --git a/tests/app/test_ipexing.py b/tests/app/test_ipexing.py
index 2ab87b4d..30beb46c 100644
--- a/tests/app/test_ipexing.py
+++ b/tests/app/test_ipexing.py
@@ -14,7 +14,6 @@
 from keri.core import eventing, coring
 from keri.help import helping
 from keri.peer import exchanging
-from keri.vc import proving
 
 from keria.app import ipexing, aiding, agenting
 from keria.app.credentialing import CredentialResourceEnd