[taler-docs] branch master updated: invariant re: accumulated_amount added; typo fixed

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The following commit(s) were added to refs/heads/master by this push:
     new b083097  invariant re: accumulated_amount added; typo fixed
b083097 is described below

commit b083097892e77f16c0a0e6e632acdf9d21884d61
Author: Özgür Kesim <oec-taler@kesim.org>
AuthorDate: Tue Oct 11 13:48:55 2022 +0200

    invariant re: accumulated_amount added; typo fixed
---
 design-documents/028-deposit-policies.rst | 14 +++++++++-----
 1 file changed, 9 insertions(+), 5 deletions(-)

diff --git a/design-documents/028-deposit-policies.rst 
b/design-documents/028-deposit-policies.rst
index 6d1a958..bf6c5ec 100644
--- a/design-documents/028-deposit-policies.rst
+++ b/design-documents/028-deposit-policies.rst
@@ -87,7 +87,7 @@ TODO: Description
                 label=<<B>policy_details</B>>
                 margin=20
                 policy_details [
-                  label="<id>id\l|<hash>hash_code 
(unique)\l|deadline\l|commitment (amount)\l|accumulated_total (amount)\l|fee 
(amount)\l|transferable (amount)\l|fulfillment_state\l|<fid>fulfillment_id 
(null)\l"
+                  label="<id>id\l|<hash>policy_hash_code 
(unique)\l|deadline\l|commitment (amount)\l|accumulated_total (amount)\l|fee 
(amount)\l|transferable (amount)\l|fulfillment_state\l|<fid>fulfillment_id 
(null)\l"
                 ]
         }
 
@@ -107,7 +107,7 @@ TODO: Description
 
 The field ``policy_hash_codes`` in table ``policy_fulfillments`` is a binary
 blob that consists of the concatenation of the sorted
-``policy_details.hash_code`` entries from all policies that are fulfilled by
+``policy_details.policy_hash_code`` entries from all policies that are 
fulfilled by
 this proof.
 
 
@@ -152,16 +152,20 @@ The following invariants need to be fulfilled and be 
checked by the auditor:
   ``policy_details.accumulated_total``.
 
 - The sum of amounts in ``policy_details.fee`` and
-  ``policy_details.transferable`` must be less or equal to the amount in
+  ``policy_details.transferable`` MUST be less or equal to the amount in
   ``policy_details.accumulated_total``.
 
+- The amount in ``policy_details.accumulated_total`` MUST be equal to the total
+  sum of contributions of the individual coins of the deposits that reference
+  this policy.
+
 - Each hash code encoded in ``policy_fulfillments.policy_hash_codes`` MUST
   refer to an existing ``policy_details.hash_code`` AND its ``.fulfillment_id``
   MUST point to the same ``policy_fulfillments.id``.
 
 - Conversely: If a ``policy_details.fulfillment_id`` points to an entry in
-  ``policy_fulfillment``, the ``policy_details.hash_code`` MUST be present in
-  that entry's ``.policy_hash_codes``.
+  ``policy_fulfillment``, the ``policy_details.policy_hash_code`` MUST be
+  present in that entry's ``.policy_hash_codes``.
 
    
 

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