questions about OP Stack re-orgs:
- can unsafe blocks be re-orged by the sequencer?
- if so, how often are unsafe blocks re-orged?
- in practice how many confirmations before block become safe?
- is there a way to view historical re-orgs?
- (bonus) what's the best way to detect a re-oreg?

Building @warpcast and @farcaster / dad / like to read, cook, ski, code

Yes, unsafe blocks can potentially be reorged, but most deployments of OP Stack (e.g. Base's) try REALLY REALLY hard to avoid this in order to allow a tx receipt to be treated as an effective tx confirmation.  So reorgs are extremely unlikely. I don't think Base has ever had one.

yea this checks out, for my us case the difference between zero and non-zero is the important one

my current assumption is wait for 6 blocks confirmation and assume zero

You think that'll change when sequencing decentralizes?