3 ms·
Length 2 seems quite short - I'd expect this to happen more often, surely.
by maest 6y ago
Length 2 seems quite short - I'd expect this to happen more often, surely.
- siberianbear 6y agoYeah, I had that same thought. A length of 4 or something seems unlikely to happen because a miner would almost have to be doing something nefarious to build on top of an already stale chain. A length of 2 could be some kind of concurrency/synchronization issue caused by one miner not having seen another miner's block in time to start mining on the "correct" chain.
- lmpostor 6y agoTwo reason why on BTC it doesn't. 1. Longer block times, so it is pretty rare that multiple miners are finding multiple valid consecutive blocks to compete on separate chains 2. It is against their incentives. By being apart of the losing chain, they have used thousands in hash power and missed out on possible tens of thousands that would come from the valid chain.