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Instead of a news headline, they could use an entry in the Bitcoin ledger to prove that the canary is current (http://erratasec.blogspot.com/2013/05/bitcoin-is-
by jluxenberg 13y ago
Instead of a news headline, they could use an entry in the Bitcoin ledger to prove that the canary is current (http://erratasec.blogspot.com/2013/05/bitcoin-is-public-ledger.html http://erratasec.blogspot.com/2013/05/bitcoin-is-public-ledg...)
EDIT: Actually, they could simply include the hash of a recent block in the blockchain.