Bitcoin Forum

Can I ask you to share the information about dates and count of blocks reorganized (orphan blocks) in the past few years, please? Is there already any tracker of it, perhaps? I would appreciate data from a reliable node.

Bitmex' Fork Monitor is the only such tool I know of. See https://forkmonitor.info/notifications
I think that what you need to look for is the stale block candidates, but the data returned is only since 20 Aug 2020.

There can't be a reliable tracker since each node can experience a specific reorg while others don't.
The nodes that didn't receive the orphaned block(s) don't have to reorg since they have the valid block(s).

In other words, a "tracker" may say that there's a reorg in xx date while others say there's none.

If you have a Bitcoin Core node, you can use getchaintips command to see if you've reorgs.
"active" height is the current tip, "valid-fork" is when it performed a reorg, while others are likely reorgs.

Thank you. There were 6 instances of stale block candidates in 2022 according to the data. There were many more of them in 2021.