sharing STDOUT in multiple sha256sum processes

[Assaf Gordon]

Hello,

I'd like to ask your advice, to verify that my command is correct.

I'm trying to calculate sha256 checksum on many files, in parallel.

A contrived example would be:
$ find /path/ -type f -print0 | xargs -0 -P5 -n1 stdbuf -oL sha256sum > 1.txt

Which would run at most 5 processes of "sha256sum",
and the output of all would be the file 1.txt.

Is it correct to assume that because "sha256sum" prints one line per file, and 
"stdbuf -oL" makes it line-buffered,
that the content in "1.txt" will be valid (i.e. no inter-mixed lines from 
different processes) ?

Thanks,
 - gordon