From c2c440a41f3cf397c1cefaede8d7e08fe9c72d13 Mon Sep 17 00:00:00 2001
From: Patrick O'Grady <prohb125@gmail.com>
Date: Fri, 26 Jun 2020 16:07:39 -0700
Subject: [PATCH] Add historical_balance_lookup (#19)

---
 models/Allow.yaml | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/models/Allow.yaml b/models/Allow.yaml
index 2f02806..4332a15 100644
--- a/models/Allow.yaml
+++ b/models/Allow.yaml
@@ -23,6 +23,7 @@ required:
   - operation_statuses 
   - operation_types
   - errors
+  - historical_balance_lookup
 properties:
   operation_statuses:
     description: |
@@ -49,3 +50,8 @@ properties:
     type: array
     items:
       $ref: 'Error.yaml'
+  historical_balance_lookup:
+    type: boolean
+    description: |
+      Any Rosetta implementation that supports querying the balance
+      of an account at any height in the past should set this to true.