Seems like you're trying to mine in scrypt algorithm, need to change it to sha-256, was able to find this for minerd, hope it helps!

Q: What's the difference between the two available algorithms, scrypt and sha256d?
A: They are completely different proof-of-work algorithms. You must use scrypt for Litecoin, and you must use sha256d for Bitcoin. The default algorithm is scrypt, so for Bitcoin mining you have to specify --algo=sha256d.