Looks like https://github.com/schmeckles22/SolaceCoin/releases/download/0.2.0.0/solace-linux-x64-0.2.0.tgz is not compressed by gzip but file extension is stated that it should be

$ file solace-linux-x64-0.2.0.tgz
solace-linux-x64-0.2.0.tgz: POSIX tar archive (GNU)

Size is 64 Mb, after compress it's 23 Mb