Thanks for the answers. Is SHA256D mined exactly like SHA256 or is there some difference in the mining process ?
Sha256d is typically known as double sha256 hash algorithm.
SHA-256d hash is achieved by applying the regular SHA-256 hash twice, by first applying SHA-256 hash to the data and then once again to the resulting hash. But does not use the hard memory schemes, such as ethereum does for example.
The cryptocurrencies that use the SHA-256d algorithm are Freicoin, Namecoin and Peercoin.
Hope this answers your question.