diff --git a/bitcoin/main.py b/bitcoin/main.py
index 8f523ba6..6f5d723e 100644
--- a/bitcoin/main.py
+++ b/bitcoin/main.py
@@ -327,6 +327,10 @@ def subtract_privkeys(p1, p2):
     k2 = decode_privkey(p2, f2)
     return encode_privkey((decode_privkey(p1, f1) - k2) % N, f1)
 
+
+
+
+
 # Hashes
 
 
@@ -419,6 +423,18 @@ def random_electrum_seed():
         + str(int(time.time() * 1000000))
     return sha256(entropy)[:32]
 
+def random_mini_key():
+    charset = get_code_string(58)[1:]   # Base58 without the 1
+    while True:
+        randstr = ''.join([random.choice(charset) for i in xrange(29)])
+        key = "S{0}?".format(randstr)
+        if ord(bin_sha256(key)[0]) != 0: 
+            continue
+        if ord(bin_sha256(key)[0]) == 0: 
+            break
+    return key[:-1]
+
+
 # Encodings
 
 def b58check_to_bin(inp):