Where there is an exact answer could you provide the sha256(answer) on the challenge page? This way plain text is not shown but we can check our answers against

Where there is an exact answer could you provide the sha256(answer) on the challenge page? This way plain text is not shown but we can check our answers against the hash. Perhaps a wrapper function to call the language/platform specific sha256 could be asked for as a Set 1 challenge. In this particular challenge the answer to a well known input would be un-hashed for verification purposes.