diff --git a/ereuse_devicehub/modules/did/views.py b/ereuse_devicehub/modules/did/views.py
index 6ebf55a7..1999eb1b 100644
--- a/ereuse_devicehub/modules/did/views.py
+++ b/ereuse_devicehub/modules/did/views.py
@@ -11,7 +11,7 @@ from flask.json import jsonify
 from flask.views import View
 
 from ereuse_devicehub import __version__
-from ereuse_devicehub.modules.dpp.models import Dpp
+from ereuse_devicehub.modules.dpp.models import Dpp, ALGORITHM
 from ereuse_devicehub.resources.device.models import Device
 
 logger = logging.getLogger(__name__)
@@ -170,7 +170,7 @@ class DidView(View):
         data = {
             'document': {},
             'dpp': self.id_dpp,
-            'algorithm': "sha3_256",
+            'algorithm': ALGORITHM,
             'components': components,
             'manufacturer DPP': '',
         }
@@ -198,7 +198,7 @@ class DidView(View):
             rr = {
                 'dpp': d.key,
                 'document': d.snapshot.json_hw,
-                'algorithm': "sha3_256",
+                'algorithm': ALGORITHM,
                 'manufacturer DPP': '',
             }
             dpps.append(rr)
diff --git a/ereuse_devicehub/modules/dpp/models.py b/ereuse_devicehub/modules/dpp/models.py
index 2d2fc303..0486e54a 100644
--- a/ereuse_devicehub/modules/dpp/models.py
+++ b/ereuse_devicehub/modules/dpp/models.py
@@ -12,6 +12,10 @@ from ereuse_devicehub.resources.models import STR_SM_SIZE, Thing
 from ereuse_devicehub.resources.user.models import User
 from ereuse_devicehub.teal.db import CASCADE_OWN
 
+
+ALGORITHM = "sha3_256"
+
+
 PROOF_ENUM = {
     'Register': 'Register',
     'IssueDPP': 'IssueDPP',
@@ -20,7 +24,11 @@ PROOF_ENUM = {
     'EWaste': 'EWaste',
 }
 
-_sorted_proofs = {'order_by': lambda: Proof.created, 'collection_class': SortedSet}
+
+_sorted_proofs = {
+    'order_by': lambda: Proof.created,
+    'collection_class': SortedSet
+}
 
 
 class Proof(Thing):
diff --git a/ereuse_devicehub/modules/dpp/views.py b/ereuse_devicehub/modules/dpp/views.py
index e39e8ba3..014ce772 100644
--- a/ereuse_devicehub/modules/dpp/views.py
+++ b/ereuse_devicehub/modules/dpp/views.py
@@ -1,3 +1,38 @@
-from flask import Blueprint
+import json
 
-dpp = Blueprint('dpp', __name__, template_folder='templates')
+from flask import Blueprint
+from flask.views import View
+from .models import Proof, Dpp, ALGORITHM
+
+dpp = Blueprint('dpp', __name__, url_prefix='/', template_folder='templates')
+
+
+class ProofView(View):
+    methods = ['GET']
+
+    def dispatch_request(selfi, proof_id):
+        proof = Proof.query.filter_by(timestamp=proof_id).first()
+
+        if not proof:
+            proof = Dpp.query.filter_by(timestamp=proof_id).one()
+            document = proof.snapshot.json_hw
+        else:
+            document = proof.normalizeDoc
+
+        data = {
+            "algorithm": ALGORITHM,
+            "document": document
+        }
+
+        d = {
+            '@context': ['https://ereuse.org/proof0.json'],
+            'data': data,
+        }
+
+        return json.dumps(d)
+
+
+##########
+# Routes #
+##########
+dpp.add_url_rule('/proofs/<int:proof_id>', view_func=ProofView.as_view('proof'))
diff --git a/ereuse_devicehub/resources/action/models.py b/ereuse_devicehub/resources/action/models.py
index 35daaa34..f7610475 100644
--- a/ereuse_devicehub/resources/action/models.py
+++ b/ereuse_devicehub/resources/action/models.py
@@ -509,11 +509,11 @@ class EraseBasic(JoinedWithOneDeviceMixin, ActionWithOneDevice):
 
     def register_proof(self):
         """This method is used for register a proof of erasure en dlt."""
-        from ereuse_devicehub.modules.dpp.models import PROOF_ENUM
+        from ereuse_devicehub.modules.dpp.models import PROOF_ENUM, ALGORITHM
 
         deviceCHID = self.device.chid
         docHash = self.snapshot.phid_dpp
-        docHashAlgorithm = 'sha3_256'
+        docHashAlgorithm = ALGORITHM
         proof_type = PROOF_ENUM['Erase']
         dh_instance = app.config.get('ID_FEDERATED', 'dh1')
 
@@ -544,8 +544,11 @@ class EraseBasic(JoinedWithOneDeviceMixin, ActionWithOneDevice):
                 "type": PROOF_ENUM['Erase'],
                 "device": self.device,
                 "action": self.snapshot,
+                "documentId": self.snapshot.id,
                 "timestamp": timestamp,
                 "issuer_id": g.user.id,
+                "documentSignature": self.snapshot.phid_dpp,
+                "normalizeDoc": self.snapshot.json_hw,
             }
             proof = Proof(**d)
             db.session.add(proof)
@@ -1744,13 +1747,17 @@ class EWaste(ActionWithMultipleDevices):
 
         api = API(api_dlt, token_dlt, "ethereum")
 
-        from ereuse_devicehub.modules.dpp.models import PROOF_ENUM, Proof
+        from ereuse_devicehub.modules.dpp.models import (
+            PROOF_ENUM,
+            Proof,
+            ALGORITHM
+        )
         from ereuse_devicehub.resources.enums import StatusCode
 
         for device in self.devices:
             deviceCHID = device.chid
             docHash = self.generateDocSig()
-            docHashAlgorithm = 'sha3_256'
+            docHashAlgorithm = ALGORITHM
             proof_type = PROOF_ENUM['EWaste']
             result = api.generate_proof(
                 deviceCHID,
@@ -1770,8 +1777,10 @@ class EWaste(ActionWithMultipleDevices):
                     "type": PROOF_ENUM['EWaste'],
                     "device": device,
                     "action": self,
+                    "documentId": self.id,
                     "timestamp": timestamp,
                     "issuer_id": g.user.id,
+                    "documentSignature": docHash,
                     "normalizeDoc": self.doc,
                 }
                 proof = Proof(**d)
diff --git a/ereuse_devicehub/resources/device/models.py b/ereuse_devicehub/resources/device/models.py
index 4aac75e3..4601b1db 100644
--- a/ereuse_devicehub/resources/device/models.py
+++ b/ereuse_devicehub/resources/device/models.py
@@ -983,13 +983,17 @@ class Device(Thing):
             snapshot = [x for x in self.actions if x.t == 'Snapshot']
             if not snapshot:
                 return
+            snapshot = snapshot[0]
 
             d = {
                 "type": PROOF_ENUM['Register'],
                 "device": self,
-                "action": snapshot[0],
+                "action": snapshot,
                 "timestamp": timestamp,
                 "issuer_id": g.user.id,
+                "documentId": snapshot.id,
+                "documentSignature": snapshot.phid_dpp,
+                "normalizeDoc": snapshot.json_hw,
             }
             proof = Proof(**d)
             db.session.add(proof)