diff --git a/cardano-api/internal/Cardano/Api/Certificate.hs b/cardano-api/internal/Cardano/Api/Certificate.hs
index 4baf425a66..05abca7a41 100644
--- a/cardano-api/internal/Cardano/Api/Certificate.hs
+++ b/cardano-api/internal/Cardano/Api/Certificate.hs
@@ -408,19 +408,17 @@ makeDrepRegistrationCertificate (DRepRegistrationRequirements conwayOnwards vcre
 data CommitteeHotKeyAuthorizationRequirements era where
   CommitteeHotKeyAuthorizationRequirements
     :: ConwayEraOnwards era
-    -> Ledger.KeyHash Ledger.ColdCommitteeRole (EraCrypto (ShelleyLedgerEra era))
-    -> Ledger.KeyHash Ledger.HotCommitteeRole (EraCrypto (ShelleyLedgerEra era))
+    -> Ledger.Credential Ledger.ColdCommitteeRole (EraCrypto (ShelleyLedgerEra era))
+    -> Ledger.Credential Ledger.HotCommitteeRole (EraCrypto (ShelleyLedgerEra era))
     -> CommitteeHotKeyAuthorizationRequirements era
 
 makeCommitteeHotKeyAuthorizationCertificate :: ()
   => CommitteeHotKeyAuthorizationRequirements era
   -> Certificate era
-makeCommitteeHotKeyAuthorizationCertificate (CommitteeHotKeyAuthorizationRequirements cOnwards coldKeyHash hotKeyHash) =
+makeCommitteeHotKeyAuthorizationCertificate (CommitteeHotKeyAuthorizationRequirements cOnwards coldKeyCredential hotKeyCredential) =
   ConwayCertificate cOnwards
     . Ledger.ConwayTxCertGov
-    $ Ledger.ConwayAuthCommitteeHotKey
-        (Ledger.KeyHashObj coldKeyHash)
-        (Ledger.KeyHashObj hotKeyHash)
+    $ Ledger.ConwayAuthCommitteeHotKey coldKeyCredential hotKeyCredential
 
 data CommitteeColdkeyResignationRequirements era where
   CommitteeColdkeyResignationRequirements
diff --git a/cardano-api/internal/Cardano/Api/Monad/Error.hs b/cardano-api/internal/Cardano/Api/Monad/Error.hs
index edd710fe53..648b7605f9 100644
--- a/cardano-api/internal/Cardano/Api/Monad/Error.hs
+++ b/cardano-api/internal/Cardano/Api/Monad/Error.hs
@@ -13,6 +13,7 @@ module Cardano.Api.Monad.Error
   , modifyError
   , handleIOExceptionsWith
   , handleIOExceptionsLiftWith
+  , hoistIOEither
 
   , module Control.Monad.Except
   , module Control.Monad.IO.Class
@@ -72,7 +73,7 @@ handleIOExceptionsLiftWith
   => MonadCatch m
   => (e -> e') -- ^ mapping function
   -> m a -- ^ action that can throw
-  -> t m a -- ^ action with caucht error lifted into 'MonadError' stack
+  -> t m a -- ^ action with caught error lifted into 'MonadError' stack
 handleIOExceptionsLiftWith f act = liftEither =<< lift (first f <$> try act)
 
 -- | Lift 'ExceptT' into 'MonadTransError'
@@ -81,3 +82,9 @@ liftExceptT :: MonadTransError e t m
             -> t m a
 liftExceptT = modifyError id
 
+
+-- | Lift an 'IO' action that returns 'Either' into 'MonadIOTransError'
+hoistIOEither :: MonadIOTransError e t m
+              => IO (Either e a)
+              -> t m a
+hoistIOEither = liftExceptT . ExceptT . liftIO