From 6a95e2c664a5dfd39f5e6667c9f86717fa1273f7 Mon Sep 17 00:00:00 2001
From: Dustin Brody <tersec@users.noreply.github.com>
Date: Thu, 15 Nov 2018 08:44:52 -0800
Subject: [PATCH] add AttestationSignedData

---
 beacon_chain/datatypes.nim | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/beacon_chain/datatypes.nim b/beacon_chain/datatypes.nim
index a01eb4466..60bcd6b3a 100644
--- a/beacon_chain/datatypes.nim
+++ b/beacon_chain/datatypes.nim
@@ -97,6 +97,16 @@ type
     justified_block_hash: Blake2_256_Digest       # Hash of last justified beacon block
     aggregate_sig*: Signature                     # BLS aggregate signature
 
+  AttestationSignedData* = object
+    fork_version*: uint64                              # Fork version
+    slot*: uint64                                      # Slot number
+    shard*: uint16                                     # Shard number
+    parent_hashes*: seq[Blake2_256_Digest]
+      # CYCLE_LENGTH parent hashes
+    shard_block_hash*: Blake2_256_Digest               # Shard block hash
+    shard_block_combined_data_root*: Blake2_256_Digest # Root of data between last hash and this one
+    justified_slot*: uint64                            # Slot of last justified beacon block referenced in the attestation
+
   ValidatorStatusCodes* {.pure.} = enum
     PendingActivation = 0
     Active = 1