initial commit

proofow.py

@@ -0,0 +1,18 @@
+from os import urandom
+from itertools import count
+from hashlib import sha256
+
+
+class proofow:
+    def __init__(self, difficulty):
+        self._base = urandom(32)
+        self._target = 2 ** (256 - difficulty)
+
+    def work(self):
+        for nonce in count():
+            if self.verify(nonce):
+                return nonce
+
+    def verify(self, nonce):
+        hexresult = sha256(self._base + str(nonce).encode()).hexdigest()
+        return int(hexresult, 16) < self._target