sha256t = sha256(sha256(sha256(data)))
what answer would be this?
if you want better you explained.
That is an answer to your question:
Yes confirm . Amd GPU. Long poll create much HW errors in sgminer and don't find a block...

I don't understand if sha256t module hash in Python is open source...
This is the python module for sha256t

Meaning it is open source...
sha256t = sha256(sha256(sha256(data)))
Please post here the link where you find this information. Thx.