Nuh 🔻 on Nostr: if you follow this line of reasoning, you realise that a platform is better for this ...

if you follow this line of reasoning, you realise that a platform is better for this task than apps for another reason; contact list privacy.

A sandboxed app can ask the platform for your contact list to do this WoT thing, or a non sandboxed app can ask the platform if a key should be trusted or not, and the platform answers without leaking contacts lists.

Contacts lists without a platform are forced to be public, which is not very good.