Add a CBlock.GetBlockHeader

src/main.h

@@ -1218,6 +1218,18 @@ public:
         nDoS = 0;
     }
 
+    CBlockHeader GetBlockHeader() const
+    {
+        CBlockHeader block;
+        block.nVersion       = nVersion;
+        block.hashPrevBlock  = hashPrevBlock;
+        block.hashMerkleRoot = hashMerkleRoot;
+        block.nTime          = nTime;
+        block.nBits          = nBits;
+        block.nNonce         = nNonce;
+        return block;
+    }
+
     uint256 BuildMerkleTree() const
     {
         vMerkleTree.clear();