Your node only knows what it has seen, and only since since the last reindex / IBD.

Great, I do see the reorg. 

I thought it was interesting that these are all post block 900000.

billytheked

Those are orphaned blocks due to timing / races, i.e. the bulk should be "naturally" occuring reorgs or late blocks that didn't make it in, 

 is indicating how many blocks the split is deep. You should for example be seeing the recent 2-block reorg from 

When the chaintip splits, the BIP-110 side should show up there too, given that there is still some bridging happening between the two implementations. If it takes over, the non-BIP-110 side will be listed there.

AskSN

bitcoin

Running more than one implementation for forking drama

Those are orphaned blocks due to timing / races, i.e. the bulk should be "naturally" occuring reorgs or late blocks that didn't make it in, `branchlen` is indicating how many blocks the split is deep. You should for example be seeing the recent 2-block reorg from https://stacker.news/items/1459136/r/optimism at 941880 to 941882:

```json
  {
    "height": 941882,
    "hash": "00000000000000000000c81cbf94a12ca498e72eb8530f7061c8746cf9687b2e",
    "branchlen": 2,
    "status": "valid-fork"
  }
```

When the chaintip splits, the BIP-110 side should show up there too, given that there is still some bridging happening between the two implementations. If it takes over, the non-BIP-110 side will be listed there.