Is there a unix-style streaming tool, like tar/zstd/age, that does forward error correction? I'd love to stick some ECC in that pipeline, data>zstd>age>ecc>tape, cause I'm paranoid about bitrot. I search for such a thing every few months and haven't scratched the itch.
The closest is things like inFECtious, which is more of just a library.
I would prefer something in go/rust, since these languages have shown really high backwards compatibility over time. Last thing you want is finding 10 years later building your recovery tool that you can't build it. Will also accept some dusty c util with a toolpath that hasn't changed in decades.
https://github.com/vivint/infectious
Ok I just dug up blkar, this looks promising, but the more the merrier.
It may not exactly be what you are looking for, but if you want to protect a stable data set from bit-rot after it's been created, make sure to take a look at Parchive/par2: