so in effect it would look something like this:

---
subject: acct:me@sour.is
aliases:
  - salty:me@sour.is
  - yarn:xuu@ev.sour.is
  - status:xuu@chaos.social
  - mailto:me@sour.is
---
subject: salty:me@sour.is
aliases:
  - acct:me@sour.is
links:
  - rel:    self
    type:   application/json+salty
    href:   https://ev.sour.is/inbox/01GAEMKXYJ4857JQP1MJGD61Z5
    properties:
        "http://salty.im/ns/nick":    xuu
        "http://salty.im/ns/display": Jon Lundy
        "http://salty.im/ns/pubkey":     kex140fwaena9t0mrgnjeare5zuknmmvl0vc7agqy5yr938vusxfh9ys34vd2p
---
subject: yarn:xuu@ev.sour.is
links:
  - rel: https://txt.sour.is/user/xuu
    properties:
        "https://sour.is/rel/redirect": https://txt.sour.is/.well-known/webfinger?resource=acct%3Axuu%40txt.sour.is
---    
subject: status:xuu@chaos.social
links:
   - rel: http://joinmastodon.org#xuu%40chaos.social
     properties:
        "https://sour.is/rel/redirect": https://chaos.social/.well-known/webfinger?resource=acct%3Axuu%40chaos.social
---
subject: mailto:me@sour.is
...