You can do the following to verify this snapshot: % sha512 -C intcnv-current.tar.gz.sha512 intcnv-current.tar.gz (SHA512) intcnv-current.tar.gz: OK and: % signify -Cp etsh-v6shell.pub -x intcnv-current.tar.gz.sha512.sig Signature Verified intcnv-current.tar.gz: OK .