Torzon, read the screenA collection of the things you actually see, explained

The collectionScreens

Screens

A maintenance notice

Something is down and here is a page telling you why, along with a helpful new address to use in the meantime. The explanation may even be true. The address is the part that pays for the page.

What it is
A page or post explaining an outage, usually with instructions
Where you meet it
On an address that half works, in forums, in messages
What it settles
Nothing unless it is signed and you check the signature
Cannot tell you
Whether the instructions came from the market

The specimen

Scheduled maintenance
 
The main address is offline for infrastructure work.
Please use the temporary address below.
Migrate within 24 hours. The old address will not return.
 
no signed block anywhere on the page

An outage notice with the two tells marked. Salmon is the deadline, which real address changes never need. Pale grey is the absence that matters more than anything present: no signature, so nothing on this page has been claimed by anyone.

Why outages are the moment

During a stretch when nothing loads, the comparison you would normally run is unavailable and everybody is looking for a way in. That is precisely when helpful addresses appear, and the timing is the manipulation rather than a coincidence.

It also flips your reasoning. Normally an unfamiliar address is suspicious. In an outage it feels like the explanation, because you already believe something has changed. The page is not persuading you of anything. You did that part yourself before you arrived.

What a genuine change looks like

GenuineThe other kind
Signed by the key you already pinnedUnsigned, or signed by a key offered on the same page
Published in more than one placeOne page, one post, one message
Long overlap, old addresses keep workingDeadline, old address described as dead already
No urgency at allAct today, act now, act before you can check

What to do while it is down

  1. Nothing. Waiting costs you access you did not have anyway, which makes this the cheapest instance of patience in the whole collection and the one most often skipped.
  2. Do not collect new addresses during an outage. Collect them on ordinary days, when several independent sources can be compared calmly.
  3. Ignore anything with a deadline in it for at least a day. If it was real, it will still be real tomorrow, because real changes overlap.
  4. Check your own file to see whether the address you were using is still in the set you wrote down.

What is worth doing before the next outage

Collect your addresses and your fingerprint on an ordinary day, when nothing is broken and several independent sources can be compared without any pressure. That single hour is what makes an outage boring instead of dangerous, because the only thing an outage can offer you is a new address, and you already have a way to test one.