fix #2880

lib/bitcoin.py

@@ -339,8 +339,8 @@ def address_to_script(addr):
     if witprog is not None:
         assert (0 <= witver <= 16)
         OP_n = witver + 0x50 if witver > 0 else 0
-        script = bytes([OP_n]).hex()
-        script += push_script(bytes(witprog).hex())
+        script = bh2u(bytes([OP_n]))
+        script += push_script(bh2u(bytes(witprog)))
         return script
     addrtype, hash_160 = b58_address_to_hash160(addr)
     if addrtype == ADDRTYPE_P2PKH:
@@ -358,7 +358,7 @@ def address_to_script(addr):
 def address_to_scripthash(addr):
     script = address_to_script(addr)
     h = sha256(bytes.fromhex(script))[0:32]
-    return bytes(reversed(h)).hex()
+    return bh2u(bytes(reversed(h)))
 
 def public_key_to_p2pk_script(pubkey):
     script = push_script(pubkey)