diff --git a/pisa/api.py b/pisa/api.py
index cd05e02..44fcb8c 100644
--- a/pisa/api.py
+++ b/pisa/api.py
@@ -102,7 +102,7 @@ def get_all_appointments():
 
         if watcher.responder:
             for uuid, job in watcher.responder.jobs.items():
-                responder_jobs[uuid] = job.to_json()
+                responder_jobs[uuid] = job.to_dict()
 
         response = jsonify({"watcher_appointments": watcher_appointments, "responder_jobs": responder_jobs})
 
diff --git a/pisa/responder.py b/pisa/responder.py
index 0b948e0..dcce0a6 100644
--- a/pisa/responder.py
+++ b/pisa/responder.py
@@ -1,6 +1,7 @@
+import json
 from queue import Queue
-from threading import Thread
 from hashlib import sha256
+from threading import Thread
 from binascii import unhexlify
 
 from pisa.logger import Logger
@@ -29,11 +30,14 @@ class Job:
         #        can be directly got from DB
         self.locator = sha256(unhexlify(dispute_txid)).hexdigest()
 
-    def to_json(self):
+    def to_dict(self):
         job = {"locator": self.locator, "justice_rawtx": self.justice_rawtx, "appointment_end": self.appointment_end}
 
         return job
 
+    def to_json(self):
+        return json.dumps(self.to_dict())
+
 
 class Responder:
     def __init__(self):
@@ -62,6 +66,8 @@ class Responder:
             # TODO: Add the missing reasons (e.g. RPC_VERIFY_REJECTED)
             pass
 
+        return receipt
+
     def create_job(self, uuid, dispute_txid, justice_txid, justice_rawtx, appointment_end, confirmations=0,
                    retry=False):
 
@@ -155,7 +161,7 @@ class Responder:
 
         for uuid, job in self.jobs.items():
             if job.appointment_end <= height:
-                tx = Carrier.get_transaction(job.dispute_txid)
+                tx = Carrier.get_transaction(job.justice_txid)
 
                 # FIXME: Should be improved with the librarian
                 confirmations = tx.get('confirmations')