http://riseup2a3go3phwiacrkq35qj2mjuankua4oxbu3b6nwil77soa5k6qd.onion/en/canary
If the canary died, it was time to get out of the mine. More recently, the term has been used by some online service providers to refer to an affirmative statement, updated regularly, that the provider has not been subjected to certain legal processes.