Osiris Schedulehow often, not just how Everything this involves, sorted by how frequently you actually do it
Schedule › Every few weeks

Compare your list

one minute

One minute, monthly. It exists to catch a change that happened without telling you.

Osiris addresses

Three published addresses for the same market. Copy rather than retype.

osiriseultmx3so5ef6ayasy4kdyekbywr7pyggpmjazeogxoyaodsyd.onion
osirislivpetlbabbl3zzqhupurfkxxbzbheu3bkrshkaiwg2hcxbyqd.onion
osirisydmlx47esm6ylhzhtnjrucgnymi7beqoyzze5jn3opbr3zy4id.onion

This list is published, not monitored. An address that opens is not an address that is genuine, and the check that settles it belongs to the every time list.

How often
Every few weeks. Monthly is fine.
How long
A minute.
What it prevents
Holding an address that has quietly left the published set, which is the exact thing that later gets a new owner.
If you skip it
Nothing, until an address you saved stops working, or worse, starts working again.
How you notice you stopped
You cannot remember the last time you looked at the file.

What you are looking for

What you findWhat it means
Everything still listedNothing to do. Most months look like this.
A new address has appearedA rotation is in progress. Add it and note the date.
One of yours is no longer listedIt has been retired. Delete it.
Everything has changed at onceUnusual. Slow down, check a second independent source before updating anything.

Why rotations happen

Accumulated attention rather than anything going wrong. An address that has been public for a long time sits in every scraped list, archived post and abandoned directory, and a growing share of what reaches it is automated scanning and whatever flooding is aimed at it that week. At some point a fresh one serves people better than the familiar one does.

How you know it is genuineA rotation with a deadline attached is a forgery. Real ones run long overlaps precisely so that somebody who checks in once a month sees the old and the new at the same time, which is exactly what this task takes advantage of.

Where to compare against

A published list, and ideally more than one that are genuinely independent of each other. Three sites run by one person count as one source, and three that all copied a fourth also count as one. Agreement between lists is much weaker evidence than it looks, because copying is the default in this space.

None of that establishes that an address is genuine. It establishes what is currently in use, which is a different and more modest claim. The genuineness question belongs to the per session check.