diff --git a/blockchain/pow.py b/blockchain/pow.py
new file mode 100644
index 0000000..b50eba5
--- /dev/null
+++ b/blockchain/pow.py
@@ -0,0 +1,27 @@
+import hashlib
+import time
+
+class ProofOfWork:
+    def __init__(self, blockchain):
+        self.blockchain = blockchain
+        self.difficulty = 2
+
+    def mine_block(self, wallet):
+        new_block = Block(len(self.blockchain.chain), self.blockchain.get_latest_block().hash, self.blockchain.pending_transactions)
+        new_block.mine_block(self.difficulty)
+        self.blockchain.chain.append(new_block)
+        self.blockchain.pending_transactions = [Transaction(None, wallet.public_key, 10)]
+        return new_block
+
+    def calculate_hash(self, block):
+        data_string = str(block.index) + block.previous_hash + str(block.transactions) + str(block.timestamp) + str(block.nonce)
+        return hashlib.sha256(data_string.encode()).hexdigest()
+
+    def validate_proof(self, block):
+        return block.hash[:self.difficulty] == '0' * self.difficulty
+
+    def mine(self, block):
+        while not self.validate_proof(block):
+            block.nonce += 1
+            block.hash = self.calculate_hash(block)
+        return block