<html><head></head><body><div class="yahoo-style-wrap" style="font-family:Helvetica Neue, Helvetica, Arial, sans-serif;font-size:13px;"><div dir="ltr" data-setdir="false">Dear List,</div><div dir="ltr" data-setdir="false"><br></div><div dir="ltr" data-setdir="false">BACKGROUND (The Old Days -- EFS Web)</div><div dir="ltr" data-setdir="false"><br></div><div dir="ltr" data-setdir="false">Until 2023, we always submitted filings via EFS web. EFS web provided the BYTE COUNT upon filing.</div><div dir="ltr" data-setdir="false"><br></div><div dir="ltr" data-setdir="false">This was great and important.</div><div dir="ltr" data-setdir="false"><br></div><div dir="ltr" data-setdir="false">If 3 years later, when filing the figures for a continuation application, I wanted to make 100% sure that I was re-filing the <i>exact same pdf file </i>(instead of another version with the same file-name),</div><div dir="ltr" data-setdir="false">I would check the byte count (usually using an MS-DOS window - yeah, I am over 50 years old) to make sure.</div><div dir="ltr" data-setdir="false"><br></div><div dir="ltr" data-setdir="false"><br></div><div dir="ltr" data-setdir="false">PATENT CENTER (I need the same functionality that I used to have)</div><div dir="ltr" data-setdir="false"><br></div><div dir="ltr" data-setdir="false">Now we live in the world of SHA-512 - Patent Center gives SHA-512 rather than bye count.</div><div dir="ltr" data-setdir="false">I want to do the same for Patent center - I want the ability to take a pdf file on my computer (e.g. 11 months after filing a US provisional), run it through SHA-512 and reproduce the SAME SHA-512 string.</div><div dir="ltr" data-setdir="false"><br></div><div dir="ltr" data-setdir="false">I am embarrassed to say that I TRIED and I FAILED</div><div dir="ltr" data-setdir="false"><br></div><div dir="ltr" data-setdir="false">In Jan 2024, a US provisional was filed -- the drawings file (USProvfiguresJan2024.pdf had a SHA-512 value of "abcdefg".</div><div dir="ltr" data-setdir="false">I now downloaded and installed a free "Digital Volcano Hash tool" -- I gave it USProvfiguresJan2024.pdf and asked for the </div><div dir="ltr" data-setdir="false">SHA-512 string. </div><div dir="ltr" data-setdir="false">The 'SHA-512' hash strings did NOT match.</div><div dir="ltr" data-setdir="false"><br></div><div dir="ltr" data-setdir="false"><br></div><div dir="ltr" data-setdir="false">What am I doing wrong? </div><div dir="ltr" data-setdir="false"><br></div><div dir="ltr" data-setdir="false">Thanks,</div><div dir="ltr" data-setdir="false">Bill</div></div></body></html>