ubuntu@localhost:~$ snap assert -h
error: Usage:
  snap [OPTIONS] assert

This command tries to add an assertion to the system assertion database.

The assertion may also be a
newer revision of a preexisting assertion that it will replace.

To succeed the assertion must be
valid, its signature verified with a known public key and the assertion consistent with and its
prerequisite in the database.

Help Options:
  -h, --help      Show this help message

ubuntu@localhost:~$ snappy list -v
Name               Date       Version    Developer  
canonical-pc       2016-02-02 3.0        canonical* 
canonical-pc-linux 2016-02-03 4.4.0-2-1  canonical* 
ubuntu-core        2016-02-03 16.04.0-12 canonical*