A sinatra server that accepts POSTs from anywhere(!) ... and disposes them ;p

blackhole.rb

require 'sinatra'

configure do
  set :port, 9999
end

allow_all = {
  'Access-Control-Allow-Headers' => 'X-Requested-With, X-File-Name, Content-Type',
  'Access-Control-Allow-Origin' => '*',
}

options '/bogus' do
  headers allow_all
end

post '/bogus' do
  headers allow_all
  body '{"success":true,"hash":"8f5110383049cf6ed31a049fa9d003fd2a0b8c51"}'
end