Add PoW and difficulty to block info page

src/page.h

@@ -1175,6 +1175,10 @@ public:
                                                  _blk_height, current_blockchain_height);
 
         // initalise page tempate map with basic info about blockchain
+
+        string blk_pow_hash_str = pod_to_hex(get_block_longhash(blk, _blk_height));
+        uint64_t blk_difficulty = core_storage->get_db().get_block_difficulty(_blk_height);
+
         mstch::map context {
                 {"testnet"              , testnet},
                 {"stagenet"             , stagenet},
@@ -1192,6 +1196,8 @@ public:
                 {"blk_age"              , age.first},
                 {"delta_time"           , delta_time},
                 {"blk_nonce"            , blk.nonce},
+                {"blk_pow_hash"         , blk_pow_hash_str},
+                {"blk_difficulty"       , blk_difficulty},
                 {"age_format"           , age.second},
                 {"major_ver"            , std::to_string(blk.major_version)},
                 {"minor_ver"            , std::to_string(blk.minor_version)},

src/templates/block.html

@@ -30,6 +30,11 @@
             <td>Total fees:</td><td>{{sum_fees}}</td>
             <td>No of txs:</td><td>{{no_txs}}</td>
         </tr>
+        <tr>
+            <td>PoW hash:</td><td>{{blk_pow_hash}}</td>
+            <td>Difficulty:</td><td>{{blk_difficulty}}</td>
+            <td></td>
+        </tr>
     </table>
 
     <h3>Miner reward transaction</h3>