FastCopy has an option to write VerifyInfo to AltStream (:fc_verify) when verifying.
I am wondering if it would be possible to implement an option to store this in a separate directory tree that mirrors the paths of the source tree instead? So similar to this:
X:\Source\ABC\XYZ.ext
X:\Destination\ABC\XYZ.ext
X:\VerifyInfo\ABC\XYZ.ext
Where the former would contain the actual data and the latter would contain the VerifyInfo. This would avoid cluttering the destination with streams/data that was never part of the source to begin with. Additionally, it makes the VerifyInfo more accessible (currently FastCopy has no function that makes use of VerifyInfo after it has been written either, right?)
I have looked at simply modifying the FastCopy::PutList function to do this (not FastCopy::AddVerIfyInfo, since VerifyInfo would also need to be removed in e.g. Sync mode). Although the source code is only available for v3.63, so I would miss recent changes.