diff --git a/apps/python/zcash_fpga.py b/apps/python/zcash_fpga.py
index 4146003..9b0223a 100644
--- a/apps/python/zcash_fpga.py
+++ b/apps/python/zcash_fpga.py
@@ -16,9 +16,11 @@ class zcash_fpga:
 
     fpga_msg_type_dict = {'FPGA_IGNORE_RPL':int('80000002', 16),
                           'FPGA_STATUS_RPL':int('80000001', 16),
-                          'RESET_FPGA_RPL':int('80000000', 16)}
+                          'RESET_FPGA_RPL':int('80000000', 16),
+                          'VERIFY_SECP256K1_SIG_RPL':int('80000101', 16)}
 
-    fpga_msg_dict = {fpga_msg_type_dict['FPGA_IGNORE_RPL']:{'name':'FPGA_IGNORE_RPL', 'feilds':[(8, 'ignored_header', byt_to_hex)]},
+    fpga_msg_dict = {fpga_msg_type_dict['VERIFY_SECP256K1_SIG_RPL']:{'name':'FPGA_IGNORE_RPL', 'feilds':[(8, 'index', byt_to_hex), (1, 'bm', byt_to_hex)]},
+                     fpga_msg_type_dict['FPGA_IGNORE_RPL']:{'name':'FPGA_IGNORE_RPL', 'feilds':[(8, 'ignored_header', byt_to_hex)]},
                      fpga_msg_type_dict['FPGA_STATUS_RPL']:{'name':'FPGA_STATUS_RPL', 'feilds':[(4, 'version', byt_to_ver), (8, 'build_date', byt_to_str), (8, 'buid_host', byt_to_str), (8, 'cmd_cap', byt_to_hex)]},
                      fpga_msg_type_dict['RESET_FPGA_RPL']:{'name':'RESET_FPGA_RPL', 'feilds':[]}}
 
@@ -46,7 +48,20 @@ class zcash_fpga:
         res = self.s.read(1024)
         self.print_reply(res)
         return res
-
+ 
+    def secp256k1_verify_sig(self, index, hsh, r, s, Qx, Qy):
+        cmd = 'B000000001010000'
+        cmd += format(index, 'x').ljust(16, '0')
+        cmd += format(s, 'x').ljust(64, '0')
+        cmd += format(r, 'x').ljust(64, '0')
+        cmd += format(hsh, 'x').ljust(64, '0')
+        cmd += format(Qx, 'x').ljust(64, '0')
+        cmd += format(Qy, 'x').ljust(64, '0')
+        self.s.write(self.codecs.decode(cmd, 'hex'))
+        res = self.get_reply()
+        if (self.struct.unpack('<I', res[4:8])[0] != self.fpga_msg_type_dict['VERIFY_SECP256K1_SIG_RPL']):
+            print("ERROR: Reply type was not VERIFY_SECP256K1_SIG_RPL")
+            
     def close(self):
         self.s.close()
         print("Closed...")
@@ -71,7 +86,7 @@ class zcash_fpga:
 #Example usage:
 
 zf = zcash_fpga()
-zf.reset_fpga()
+zf.secp256k1_verify_sig(1, 1, 1, 1, 1, 1)
 
 zf.close()