In order to verify the PGP signature of your downloaded Verifpal release binary, please first verify the signature of the checksum file, verifpal_0VERSION0_checksums.txt, against its signature, verifpal_0VERSION0_checksums.txt.sig. Both files are located in the releases directory linked above.
Once the signature of the checksum file is verified, ensure that the SHA256SUM of your downloaded release archive matches the one listed inside the checksum file for your chosen platform.