Mining only p2pkh txns

output.txt

@@ -1,4 +1,13 @@
-200000000000000000000000000000000000000000000000000000000000000000000000e5b7b43a00f4538e62b642589ddc5b9715585c6b6facc4b7575220412e3a4e8a64f41266ffff001f000031f8
-010000000001010000000000000000000000000000000000000000000000000000000000000000ffffffff0403951a06ffffffff0277bf4025000000001976a9142c30a6aaac6d96687291475d7d52f4b469f665a688ac0000000000000000266a24aa21a9ed645ca51edf54d5cca1ec2f190d5738d86970c506b86310ce835e08c1b92715770120000000000000000000000000000000000000000000000000000000000000000000000000
-2b2d727ffa881b4d782eea4b1b87ea97beebef2c37245fac7c8ee098dba0e07f
+20000000000000000000000000000000000000000000000000000000000000000000000000894dc706b52c85eddb6adcc773a6e5a5c0da70991f25bb51f277fb87f114ec43fe1266ffff001f0002a42c
+010000000001010000000000000000000000000000000000000000000000000000000000000000ffffffff0403951a06ffffffff028ec54025000000001976a9142c30a6aaac6d96687291475d7d52f4b469f665a688ac0000000000000000266a24aa21a9ed4abb2d1b71aafd2f2a65a9c6cd8eaa9e5085e55945de72e1b1337181cdec904c0120000000000000000000000000000000000000000000000000000000000000000000000000
+cda35f49af0f4e2590a6a27bf58ab261c38dcedc20e5ecb26cabc580395d8bd4
+5c5aac8345686bd466014ef256a503bc896f4186366fb000daea1f90a4143377
+379c9c1070725589a0fa9626a59bfab6de21a50e600815be7d6af70edf059f3c
+ec6a92468759cecaa854e9b0155d4a94e52c897fe96607d592218664d1165a11
+4408e4d4f52837e9504056c8e33b7e921a10c072b520ff810fc938ad1201b652
+bd2e7dfc9c1a42accac2fd14f74bbfcf89a2d61352a077aef349ebcbc98c0be5
+cb2930faf9670b24e09be9a5a98e72d1b5cfd0dcecb1b1b5452eb85a1ce80ff4
+6e0ae197a30f26e0de708f95e52ebb957de42ace5c08ab62092454c58e066f51
+c0d67d6cb71d5cd372060a6f508017d0e90167f111a5219a0008cfa5eb37b0fa
+0205c30e63e36a248faba5bdbbdde7a4185cb2bd314ae62549578575abb6da72
 4ab3cc4296fee78153d60d2884323a84260157db0b83a72309272f109ad9dd32

src/block.h

@@ -20,8 +20,9 @@ string getMerkleRoot(vector<string> &txns_included) {
     bool start = true;
 
     while (hashQ.size() > 1) {
-        if ((start || hashQ.size() == prev_size/2) && hashQ.size() % 2 == 1) {
-            hashQ.push(hashQ.back());
+        if (start || hashQ.size() == prev_size/2) {
+            if (hashQ.size() % 2 == 1)
+                hashQ.push(hashQ.back());
             prev_size = hashQ.size();
         }
         start = false;
@@ -105,10 +106,8 @@ string calcNonce (string blockHeader) {
         for (int i = SHA256_DIGEST_LENGTH - 1; i >= 0; i--)
             hash.push_back(sha[i]);
 
-        if (hash < target) {
-            cout << "Hash = " << bstr2hexstr(hash, hash.length()) << endl;
+        if (hash < target)
             return nonce;
-        }
 
         // Increment nonce
         int j = 3;

src/main.cpp

@@ -41,7 +41,6 @@ void mine() {
     int64_t reward = 625000000;
     uint32_t block_size = 80;
 
-    int count = 0;
     for (auto &txn : transactions) {
         bool flag = false;
         for (auto &inp : txn.second["vin"]) {
@@ -59,8 +58,6 @@ void mine() {
             block_size += ser_txn.size();
             reward += txn.first;
         }
-
-        if (++count == 4) break;
     }
 
     // Calculate TXIDs of all the transactions to be included in the block