SHT-Certificates are the SHT-Software engineering union’s main method of making software SHT again. The union issues them to SHT software projects. You can verify the authenticity of a SHT-Cert with and

user@host:~$  openssl rsautl -in FOOBAR.sig -verify -inkey -pubin

The SHT-certified projects are listed in the table below.

Project Description SHT-Certificate
poolio A thread-pool. poolio.sig
rspl A stream processor language. rspl.sig
shtlay A website layout. shtlay.sig