3 ms·

These are called "orphan blocks" and they happen very regularly, like everyday. https://bitcoin.stackexchange.com/questions/2170/how-often-forks-occur https://

• freeAgent 5y ago
  That’s not really a double spend issue, though. Usually the blocks are found within a very short time between them. Unless the double spender is coordinating with a miner, orphaned blocks are a non-issue. It’s 51% attacks that would be the real problem.
  • LanceH 5y ago
    This is the answer to what I was asking. Not sure who I offended to get downvoted. edit: I guess my point is that if you're selling coffee and making 100 $6 transaction, going 1 block deep probably isn't a big deal. If you're selling one car a month, you might not want to risk the small chance of an orphaned block -- but a one hour hold on title is a whole lot better than waiting for a check to clear.