rpc: Improve gettxoutsetinfo help

src/node/coinstats.cpp

@@ -15,6 +15,7 @@
 
 #include <map>
 
+// Database-independent metric indicating the UTXO set size
 static uint64_t GetBogoSize(const CScript& scriptPubKey)
 {
     return 32 /* txid */ +

src/rpc/blockchain.cpp

@@ -1050,15 +1050,15 @@ static RPCHelpMan gettxoutsetinfo()
                 RPCResult{
                     RPCResult::Type::OBJ, "", "",
                     {
-                        {RPCResult::Type::NUM, "height", "The current block height (index)"},
-                        {RPCResult::Type::STR_HEX, "bestblock", "The hash of the block at the tip of the chain"},
+                        {RPCResult::Type::NUM, "height", "The block height (index) of the returned statistics"},
+                        {RPCResult::Type::STR_HEX, "bestblock", "The hash of the block at which these statistics are calculated"},
                         {RPCResult::Type::NUM, "transactions", "The number of transactions with unspent outputs"},
                         {RPCResult::Type::NUM, "txouts", "The number of unspent transaction outputs"},
                         {RPCResult::Type::NUM, "bogosize", "A meaningless metric for UTXO set size"},
                         {RPCResult::Type::STR_HEX, "hash_serialized_2", /* optional */ true, "The serialized hash (only present if 'hash_serialized_2' hash_type is chosen)"},
                         {RPCResult::Type::STR_HEX, "muhash", /* optional */ true, "The serialized hash (only present if 'muhash' hash_type is chosen)"},
                         {RPCResult::Type::NUM, "disk_size", "The estimated size of the chainstate on disk"},
-                        {RPCResult::Type::STR_AMOUNT, "total_amount", "The total amount"},
+                        {RPCResult::Type::STR_AMOUNT, "total_amount", "The total amount of coins in the UTXO set"},
                     }},
                 RPCExamples{
                     HelpExampleCli("gettxoutsetinfo", "")