Namecoin / AuxPoW: Use parent block's hash when comparing hash to tar…

…get.
namecoin · Jun 30, 2018 · d24daeb · d24daeb
1 parent eba586d
commit d24daeb
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Showing 2 changed files with 13 additions and 1 deletion.
diff --git a/lib/auxpow.py b/lib/auxpow.py
@@ -109,3 +109,15 @@ def deserialize_merkle_branch(s):
     index = vds.read_int32()
     return hashes, index, s[vds.read_cursor:]
 
+def hash_parent_header(header):
+    if not auxpow_active(header):
+        return electrum_nmc.blockchain.hash_header(header)
+
+    verify_auxpow(header)
+
+    return electrum_nmc.blockchain.hash_header(header['auxpow']['parent_header'])
+
+# TODO: Implement this
+def verify_auxpow(header):
+    pass
+
diff --git a/lib/blockchain.py b/lib/blockchain.py
@@ -175,7 +175,7 @@ def update_size(self):
         self._size = os.path.getsize(p)//80 if os.path.exists(p) else 0
 
     def verify_header(self, header, prev_hash, target):
-        _hash = hash_header(header)
+        _hash = auxpow.hash_parent_header(header)
         if prev_hash != header.get('prev_block_hash'):
             raise Exception("prev hash mismatch: %s vs %s" % (prev_hash, header.get('prev_block_hash')))
         if constants.net.TESTNET: