2 files changed, 27 insertions, 27 deletions

diff --git a/graphql/schema/operations.graphql b/graphql/schema/operations.graphql
index d37df2e2..18e0929c 100644
--- a/graphql/schema/operations.graphql
+++ b/graphql/schema/operations.graphql
@@ -1,7 +1,7 @@
 """An operation applied to a bug."""
 interface Operation {
-    """The hash of the operation"""
-    hash: Hash!
+    """The identifier of the operation"""
+    id: String!
     """The operations author."""
     author: Identity!
     """The datetime when this operation was issued."""
@@ -27,8 +27,8 @@ type OperationEdge {
 # Operations
 
 type CreateOperation implements Operation & Authored {
-    """The hash of the operation"""
-    hash: Hash!
+    """The identifier of the operation"""
+    id: String!
     """The author of this object."""
     author: Identity!
     """The datetime when this operation was issued."""
@@ -40,8 +40,8 @@ type CreateOperation implements Operation & Authored {
 }
 
 type SetTitleOperation implements Operation & Authored {
-    """The hash of the operation"""
-    hash: Hash!
+    """The identifier of the operation"""
+    id: String!
     """The author of this object."""
     author: Identity!
     """The datetime when this operation was issued."""
@@ -52,8 +52,8 @@ type SetTitleOperation implements Operation & Authored {
 }
 
 type AddCommentOperation implements Operation & Authored {
-    """The hash of the operation"""
-    hash: Hash!
+    """The identifier of the operation"""
+    id: String!
     """The author of this object."""
     author: Identity!
     """The datetime when this operation was issued."""
@@ -64,21 +64,21 @@ type AddCommentOperation implements Operation & Authored {
 }
 
 type EditCommentOperation implements Operation & Authored {
-    """The hash of the operation"""
-    hash: Hash!
+    """The identifier of the operation"""
+    id: String!
     """The author of this object."""
     author: Identity!
     """The datetime when this operation was issued."""
     date: Time!
 
-    target: Hash!
+    target: String!
     message: String!
     files: [Hash!]!
 }
 
 type SetStatusOperation implements Operation & Authored {
-    """The hash of the operation"""
-    hash: Hash!
+    """The identifier of the operation"""
+    id: String!
     """The author of this object."""
     author: Identity!
     """The datetime when this operation was issued."""
@@ -88,8 +88,8 @@ type SetStatusOperation implements Operation & Authored {
 }
 
 type LabelChangeOperation implements Operation & Authored {
-    """The hash of the operation"""
-    hash: Hash!
+    """The identifier of the operation"""
+    id: String!
     """The author of this object."""
     author: Identity!
     """The datetime when this operation was issued."""
diff --git a/graphql/schema/timeline.graphql b/graphql/schema/timeline.graphql
index ccc89b87..12462aa3 100644
--- a/graphql/schema/timeline.graphql
+++ b/graphql/schema/timeline.graphql
@@ -1,7 +1,7 @@
 """An item in the timeline of events"""
 interface TimelineItem {
-    """The hash of the source operation"""
-    hash: Hash!
+    """The identifier of the source operation"""
+    id: String!
 }
 
 """CommentHistoryStep hold one version of a message in the history"""
@@ -30,8 +30,8 @@ type TimelineItemEdge {
 
 """CreateTimelineItem is a TimelineItem that represent the creation of a bug and its message edition history"""
 type CreateTimelineItem implements TimelineItem & Authored {
-    """The hash of the source operation"""
-    hash: Hash!
+    """The identifier of the source operation"""
+    id: String!
     author: Identity!
     message: String!
     messageIsEmpty: Boolean!
@@ -44,8 +44,8 @@ type CreateTimelineItem implements TimelineItem & Authored {
 
 """AddCommentTimelineItem is a TimelineItem that represent a Comment and its edition history"""
 type AddCommentTimelineItem implements TimelineItem & Authored {
-    """The hash of the source operation"""
-    hash: Hash!
+    """The identifier of the source operation"""
+    id: String!
     author: Identity!
     message: String!
     messageIsEmpty: Boolean!
@@ -58,8 +58,8 @@ type AddCommentTimelineItem implements TimelineItem & Authored {
 
 """LabelChangeTimelineItem is a TimelineItem that represent a change in the labels of a bug"""
 type LabelChangeTimelineItem implements TimelineItem & Authored {
-    """The hash of the source operation"""
-    hash: Hash!
+    """The identifier of the source operation"""
+    id: String!
     author: Identity!
     date: Time!
     added: [Label!]!
@@ -68,8 +68,8 @@ type LabelChangeTimelineItem implements TimelineItem & Authored {
 
 """SetStatusTimelineItem is a TimelineItem that represent a change in the status of a bug"""
 type SetStatusTimelineItem implements TimelineItem & Authored {
-    """The hash of the source operation"""
-    hash: Hash!
+    """The identifier of the source operation"""
+    id: String!
     author: Identity!
     date: Time!
     status: Status!
@@ -77,8 +77,8 @@ type SetStatusTimelineItem implements TimelineItem & Authored {
 
 """LabelChangeTimelineItem is a TimelineItem that represent a change in the title of a bug"""
 type SetTitleTimelineItem implements TimelineItem & Authored {
-    """The hash of the source operation"""
-    hash: Hash!
+    """The identifier of the source operation"""
+    id: String!
     author: Identity!
     date: Time!
     title: String!