Document method for reviewers to verify chainTxData

This commit adds the final block hash of the window to getchaintxstats
and documents how reviewers can verify changes to chainTxData.

1 files changed, 8 insertions, 6 deletions

diff --git a/src/rpc/blockchain.cpp b/src/rpc/blockchain.cpp
index 346672e45a..4276ad9eeb 100644
--- a/src/rpc/blockchain.cpp
+++ b/src/rpc/blockchain.cpp
@@ -1526,12 +1526,13 @@ UniValue getchaintxstats(const JSONRPCRequest& request)
             "2. \"blockhash\"  (string, optional) The hash of the block that ends the window.\n"
             "\nResult:\n"
             "{\n"
-            "  \"time\": xxxxx,                (numeric) The timestamp for the final block in the window in UNIX format.\n"
-            "  \"txcount\": xxxxx,             (numeric) The total number of transactions in the chain up to that point.\n"
-            "  \"window_block_count\": xxxxx,  (numeric) Size of the window in number of blocks.\n"
-            "  \"window_tx_count\": xxxxx,     (numeric) The number of transactions in the window. Only returned if \"window_block_count\" is > 0.\n"
-            "  \"window_interval\": xxxxx,     (numeric) The elapsed time in the window in seconds. Only returned if \"window_block_count\" is > 0.\n"
-            "  \"txrate\": x.xx,               (numeric) The average rate of transactions per second in the window. Only returned if \"window_interval\" is > 0.\n"
+            "  \"time\": xxxxx,                         (numeric) The timestamp for the final block in the window in UNIX format.\n"
+            "  \"txcount\": xxxxx,                      (numeric) The total number of transactions in the chain up to that point.\n"
+            "  \"window_final_block_hash\": \"...\",      (string) The hash of the final block in the window.\n"
+            "  \"window_block_count\": xxxxx,           (numeric) Size of the window in number of blocks.\n"
+            "  \"window_tx_count\": xxxxx,              (numeric) The number of transactions in the window. Only returned if \"window_block_count\" is > 0.\n"
+            "  \"window_interval\": xxxxx,              (numeric) The elapsed time in the window in seconds. Only returned if \"window_block_count\" is > 0.\n"
+            "  \"txrate\": x.xx,                        (numeric) The average rate of transactions per second in the window. Only returned if \"window_interval\" is > 0.\n"
             "}\n"
             "\nExamples:\n"
             + HelpExampleCli("getchaintxstats", "")
@@ -1582,6 +1583,7 @@ UniValue getchaintxstats(const JSONRPCRequest& request)
     UniValue ret(UniValue::VOBJ);
     ret.push_back(Pair("time", (int64_t)pindex->nTime));
     ret.push_back(Pair("txcount", (int64_t)pindex->nChainTx));
+    ret.push_back(Pair("window_final_block_hash", pindex->GetBlockHash().GetHex()));
     ret.push_back(Pair("window_block_count", blockcount));
     if (blockcount > 0) {
         ret.push_back(Pair("window_tx_count", nTxDiff));