Add details for GetSpentInfo

_includes/devdoc/dash-core/rpcs/quick-reference.md

@@ -91,7 +91,7 @@ These RPCs are all Dash-specific and not found in Bitcoin Core
 * [GetDifficulty][rpc getdifficulty]: {{summary_getDifficultly}}
 * [GetMemPoolInfo][rpc getmempoolinfo]: {{summary_getMemPoolInfo}} {{UPDATED0_12_0}}
 * [GetRawMemPool][rpc getrawmempool]: {{summary_getRawMemPool}} {{UPDATED0_13_0}}
-    * [GetSpentInfo][rpc getspentinfo]: {{summary_getSpentInfo}}
+* [GetSpentInfo][rpc getspentinfo]: {{summary_getSpentInfo}} {{DASH_NEW0_12_1}}
 * [GetTxOut][rpc gettxout]: {{summary_getTxOut}}
 * [GetTxOutProof][rpc gettxoutproof]: {{summary_getTxOutProof}} {{NEW0_11_0}}
 * [GetTxOutSetInfo][rpc gettxoutsetinfo]: {{summary_getTxOutSetInfo}}

_includes/devdoc/dash-core/rpcs/rpcs/getspentinfo.md

@@ -7,8 +7,71 @@ http://opensource.org/licenses/MIT.
 ##### GetSpentInfo
 {% include helpers/subhead-links.md %}
 
+{% assign summary_getSpentInfo="returns the txid and index where an output is spent (requires `spentindex` to be enabled)." %}
+
 {% autocrossref %}
 
-{% assign summary_getSpentInfo= %}
+*Added in Dash Core 0.12.1*
+
+The `getspentinfo` RPC {{summary_getSpentInfo}}
+
+*Parameter #1---the TXID of the output*
+
+{% itemplate ntpd1 %}
+- n: "TXID"
+  t: "string (hex)"
+  p: "Required<br>(exactly 1)"
+  d: "The TXID of the transaction containing the relevant output, encoded as hex in RPC byte order"
+
+{% enditemplate %}
+
+*Parameter #2---the start block height*
+
+{% itemplate ntpd1 %}
+- n: "Index"
+  t: "number (int)"
+  p: "Required<br>(exactly 1)"
+  d: "The block height to begin looking in"
+
+{% enditemplate %}
+
+*Result---the TXID and spending input index*
+
+{% itemplate ntpd1 %}
+- n: "`result`"
+  t: "object/null"
+  p: "Required<br>(exactly 1)"
+  d: "Information about the spent output.  If output wasn't found or if an error occurred, this will be JSON `null`"
+
+- n: "→<br>`txid`"
+  t: "string"
+  p: "Required<br>(exactly 1)"
+  d: "The output txid"
+
+- n: "→<br>`index`"
+  t: "number"
+  p: "Required<br>(exactly 1)"
+  d: "The spending input index"
+{% enditemplate %}
+
+*Example from Dash Core 0.12.2*
+
+Get the txid and index where an output is spent:
+
+{% highlight bash %}
+dash-cli getspentinfo \
+  '''
+    {
+      "txid": "e0a06b47f0de6f3851a228d5ac377ac38b495adf04298c43e951e679c5b0aa8f", \
+      "index": 0
+    }
+{% endhighlight %}
+
+Result:
+**Example needed**
+
+{% highlight json %}
+
+{% endhighlight %}
 
 {% endautocrossref %}