a tiny, fast, almost-always-io-bound tool for verifying SFV files. Written in Go and adapted from @mpolden's sfv package to verify any of Golang's supported crc32c polynomials (crc32c, IEEE, or Koopman) in parallel. All deps are vendored, so this should build outside of a $GOPATH for any go>=1.7.
go install github.com/cwlbraa/verifysfv
# to verify a crc32c.sfv file:
verifysfv fileManifest.sfv
# for more options:
verifysfv -h