Definition
A canary/warrant canary/canary statement is a practice to say that someone or something is safe or unsafe due to legal processes, certain circumstances, etc.
How should it be used?
Least people or online service providers offer canaries to confirm the circumstances around them, but most of it are abused due to fashions, internet slangs, etc.
A canary should include at least:
- Confirmations or affirmative statements to the audience.
- Evidences (newest block headers of blockchains, recent news articles, etc.).
- A OpenPGP signature.
A canary should be updated regularly to reflect recent circumstances, such as every 14 days.
Methodology
A canary file or text shall be created originally on the providers' websites or spots, hosted by the providers (all underlaying infrastructures shall be made by the providers), as plain text, not encrypted or the signature corrupted.
There's no third party involved, or shall not, as the canary shall be spoken as an evidence of the author themselves.
The canary shall be verified or attested true by its content and other searchable evidences. A falsified canary should not exist and shall be avoided.
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