The safety number is only partly per-conversation. If you compare safety numbers of different conversations, you'll discover that one half of them is always the same (which half that is changes depending on the conversation). This part is the fingerprint of your personal key.
The Signal blog states that "we designed the safety number format to be a sorted concatenation of two 30-digit individual numeric fingerprints." [1]
The way I understand it, you could simply share your part of the number on your website, but Moxie recommends against it, since this fingerprint changes between reinstalls.
The Signal blog states that "we designed the safety number format to be a sorted concatenation of two 30-digit individual numeric fingerprints." [1]
The way I understand it, you could simply share your part of the number on your website, but Moxie recommends against it, since this fingerprint changes between reinstalls.
[1] https://signal.org/blog/safety-number-updates/