citB0in, Do you have a written description of the stratum protocol inner workings? I have never seen it written down any where. It work be wonderful at actually see it so those of us who want to delve into the inner workings and/or just try to understand what is being sent back and forth... there are many places that give a 200 thousand foot view of protocols in general... but nothing closer to the hardware. How do you guys write software without a spec? is it a club thing, if you aren't in the club you can't see the secret sauce recipe?  Does any body on this channel know where someone might find a specification for the stratum protocol?  Thanks