[taler-docs] branch master updated: improve KYC spec

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grothoff pushed a commit to branch master
in repository docs.

The following commit(s) were added to refs/heads/master by this push:
     new 4e88432b improve KYC spec
4e88432b is described below

commit 4e88432b2de58f09a4ceb84434ce03f649fb1692
Author: Christian Grothoff <christian@grothoff.org>
AuthorDate: Fri Apr 19 15:44:05 2024 +0200

    improve KYC spec
---
 design-documents/023-taler-kyc.rst | 115 ++++++++++++++++++++++++++++++-------
 1 file changed, 94 insertions(+), 21 deletions(-)

diff --git a/design-documents/023-taler-kyc.rst 
b/design-documents/023-taler-kyc.rst
index 6ace74cb..28f49461 100644
--- a/design-documents/023-taler-kyc.rst
+++ b/design-documents/023-taler-kyc.rst
@@ -370,8 +370,13 @@ New Endpoints
       threshold: Amount;
 
       // True if this is a soft limit that could be raised
-      // by passing KYC checks.
-      soft: boolean;
+      // by passing KYC checks.  Clients *may* deliberately
+      // try to cross limits and trigger measures resulting
+      // in 451 responses to begin KYC processes.
+      // Clients that are aware of hard limits *should*
+      // inform users about the hard limit and prevent flows
+      // in the UI that would cause violations of hard limits.
+      soft_limit: boolean;
     }
 
 
@@ -639,8 +644,6 @@ New Endpoints
      }
 
 
-
-
 .. http:get:: /aml/$OFFICER_PUB/measures
 
   To enable the AML staff SPA to give AML staff a choice of possible measures, 
a
@@ -688,8 +691,8 @@ New Endpoints
       // Name of an AML program.
       prog_name: string;
 
-      // Context for the check. Could be empty.
-      context: Object;
+      // Context for the check. Optional.
+      context?: Object;
 
     }
 
@@ -954,7 +957,7 @@ configuration section:
     # them. Not actually enforced by the exchange, but
     # primarily used to inform the user whether this is
     # an "and" or "or". YES for "and".
-    AND_COMBINATOR = YES
+    IS_AND_COMBINATOR = YES
 
     # YES if the rule (specifically, operation type,
     # threshold, timeframe) and the general nature of
@@ -1056,19 +1059,19 @@ AML programs are helper programs that can:
     // Can be used to store properties such as PEP,
     // risk category, type of business, hits on
     // sanctions lists, etc.
-    properties?: Object;
+    properties?: AccountProperties;
 
     // Types of events to add to the KYC events table.
     // (for statistics).
     events?: string[];
 
     // When does the outcome expire?
-    expiration: Timestamp;
+    expiration_time: Timestamp;
 
     // Name of the measure to apply the outcome expires.
     // If not set, we revert to the default set
     // of rules (and the default account state).
-    successor_measure: string;
+    successor_measure?: string;
 
     // Array of KYC rules to apply.  Note that this
     // array overrides *all* of the default rules.
@@ -1078,7 +1081,7 @@ AML programs are helper programs that can:
     rules: KycRule[];
 
     // Custom measures that KYC rules may refer to.
-    custom_measures: { "name" : MeasureInformation };
+    custom_measures?: { "name" : MeasureInformation };
 
   }
 
@@ -1114,7 +1117,8 @@ AML programs are helper programs that can:
     // True if all the measures will eventually need to
     // be satisfied, false if any of the measures should
     // do.
-    and_combinator: boolean;
+    // Default (if missing) is false.
+    is_and_combinator?: boolean;
   }
 
 If the AML program fails (exits with a failure code or
@@ -1251,7 +1255,6 @@ on GET ``/deposits/`` with the respective legitimization 
requirement row.
      REFERENCES wire_targets (h_payto)
     ,start_time INT8 NOT NULL
     ,jmeasures VARCHAR[] NOT NULL
-    ,is_and_combinator BOOL NOT NULL DEFAULT(FALSE)
     ,is_finished BOOL NOT NULL DEFAULT(FALSE)
     )
     PARTITION BY HASH (h_payto);
@@ -1260,10 +1263,8 @@ on GET ``/deposits/`` with the respective legitimization 
requirement row.
     IS 'Time when the measure was triggered (by decision or rule)';
   COMMENT ON COLUMN legitimization_requirements.is_finished
     IS 'Set to TRUE if this set of measures was processed; used to avoid 
indexing measures that are done';
-  COMMENT ON COLUMN legitimization_requirements.is_and_combinator
-    IS 'Set to TRUE each of the measures will ultimately need to be satisfied; 
FALSE if the user has the choice to satisfy one of them';
   COMMENT ON COLUMN legitimization_requirements.jmeasures
-    IS 'array with KYC/AML measures for the account encoded in JSON';
+    IS 'JSON object of type LegitimizationMeasures with KYC/AML measures for 
the account encoded';
 
   CREATE INDEX ON legitimization_measures (h_payto)
     WHERE NOT finished;
@@ -1274,12 +1275,12 @@ on GET ``/deposits/`` with the respective 
legitimization requirement row.
      REFERENCES wire_targets (h_payto)
     ,decision_time INT8 NOT NULL DEFAULT(0)
     ,expiration_time INT8 NOT NULL DEFAULT(0)
-    ,jproperties VARCHAR,
+    ,jproperties TEXT,
     ,to_investigate BOOL NOT NULL
     ,is_frozen BOOL NOT NULL
     ,is_reported BOOL NOT NULL
     ,is_active BOOL NOT NULL DEFAULT(TRUE)
-    ,new_rules NOT NULL TEXT
+    ,jnew_rules NOT NULL TEXT
     )
     PARTITION BY HASH (h_payto);
 
@@ -1292,7 +1293,7 @@ on GET ``/deposits/`` with the respective legitimization 
requirement row.
   COMMENT ON COLUMN legitimization_outcomes.expiration_time
     IS 'time when the decision expires and the expiration new_rules should be 
applied';
   COMMENT ON COLUMN legitimization_outcomes.jproperties
-    IS 'JSON with account properties, such as PEP status, business domain, 
risk assessment, etc.';
+    IS 'JSON object of type AccountProperties, such as PEP status, business 
domain, risk assessment, etc.';
   COMMENT ON COLUMN legitimization_outcomes.to_investigate
     IS 'AML staff should investigate the activity of this account';
   COMMENT ON COLUMN legitimization_outcomes.is_frozen
@@ -1301,8 +1302,8 @@ on GET ``/deposits/`` with the respective legitimization 
requirement row.
     IS 'Set to TRUE if the activity of the account was reported to 
authorities';
   COMMENT ON COLUMN legitimization_outcomes.is_active
     IS 'TRUE if this is the current authoritative legitimization outcome';
-  COMMENT ON COLUMN legitimization_outcomes.new_rules
-    IS 'JSON array of KycRule objects to apply to the various operation types 
for this account; all KYC checks should first check if active new rules for a 
given account exist in this table (and apply specified measures); if not, it 
should check the default rules to decide if a measure is required';
+  COMMENT ON COLUMN legitimization_outcomes.jnew_rules
+    IS 'JSON object of type LegitimizationRules with rules to apply to the 
various operation types for this account; all KYC checks should first check if 
active new rules for a given account exist in this table (and apply specified 
measures); if not, it should check the default rules to decide if a measure is 
required';
 
   CREATE INDEX legitimization_outcomes_active
     ON legitimization_outcomes(h_payto)
@@ -1407,6 +1408,78 @@ on GET ``/deposits/`` with the respective legitimization 
requirement row.
   CREATE INDEX kyc_event_index
     ON kyc_events(event_type,event_timestamp);
 
+
+The ``jmeasures`` JSON in the ``legitimization_measures``
+table has is of type `LegitimizationMeasures`:
+
+.. ts:def:: LegitimizationMeasures
+
+  interface LegitimizationMeasures {
+
+    // Array of legitimization measures that
+    // are to be applied.
+    measures: MeasureInformation[];
+
+    // True if the client is expected to eventually satisfy all requirements.
+    // Default (if missing) is false.
+    is_and_combinator?: boolean;
+  }
+
+
+The ``jnew_rules`` JSON in the ``legitimization_outcomes``
+table has is of type `LegitimizationRules`:
+
+.. ts:def:: LegitimizationRules
+
+  interface LegitimizationRules {
+
+    // Measure to apply when the expiration time is
+    // reached.  If not set, we refer to the default
+    // set of rules (and the default account state).
+    successor_measure?: string;
+
+    // Legitimization rules that are to be applied
+    // to this account.
+    rules: KycRule[];
+
+    // Custom measures that KYC rules may refer to.
+    custom_measures: { "name" : MeasureInformation };
+  }
+
+
+The ``jproperties`` JSON in the ``legitimization_outcomes`` table has is of
+type `AccountProperties`. All fields in this object are optional. The actual
+properties collected depend fully on the discretion of the exchange operator;
+however, some common fields are standardized and thus described here.
+
+.. ts:def:: AccountProperties
+
+  interface AccountProperties {
+
+    // True if this is a politically exposed account.
+    // Rules for classifying accounts as politically
+    // exposed are country-dependent.
+    pep?: boolean;
+
+    // True if this is a sanctioned account.
+    // Rules for classifying accounts as sanctioned
+    // are country-dependent.
+    sanctioned?: boolean;
+
+    // True if this is a high-risk account.
+    // Rules for classifying accounts as at-risk
+    // are exchange operator-dependent.
+    high_risk?: boolean;
+
+    // Business domain of the account owner.
+    // The list of possible business domains is
+    // operator- or country-dependent.
+    business_domain?: string;
+
+  }
+
+
+
 KYC forms
 ^^^^^^^^^
 

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