How to call timecert

sha1.rb

require 'digest/sha1'
require 'open-uri'

# Calculate the digest of content
def digest(content)
  Digest::SHA1.hexdigest(content)
end

# Gets the timecert timestamp for a given piece of content
def timecert(content)
  Time.parse(open("http://timecert.org/#{digest(content)}.time").read)
end