This question comes up every so often, would be nice if it was in a FAQ somewhere.
The tripcode is a one-way hash output generated from a string/passphrase as a source, not unlike an md5/sha1, albeit weaker. So being able to generate the hash that Q posts under means you also know the passphrase that Q uses.. which therefore establishes that you are either the same poster as previous Q drops, or are close enough to Q that they have communicated the same passphrase to you via some out-of-band means, like among a team of folks acting under the Q rubric for example.
This question comes up every so often, would be nice if it was in a FAQ somewhere.
The tripcode is a one-way hash output generated from a string/passphrase as a source, not unlike an md5/sha1, albeit weaker. So being able to generate the hash that Q posts under means you also know the passphrase that Q uses.. which therefore establishes that you are either the same poster as previous Q drops, or are close enough to Q that they have communicated the same passphrase to you via some out-of-band means, like among a team of folks acting under the Q rubric for example.