(eg. you deposit YAC to exchange, wait until the exchange credits you the deposited balance, block gets "magically" orphaned - and you now have both your YACs AND credit at an exchange - that's why Cryptsy has been disabling YAC trading lately).
Why would an exchange give you credit for freshly minted coins, unless they deliberatedly wanted the risk.
NOT freshly minted... -.-"
You just CAN'T spend freshly minted coins until there's 520 more blocks above the one you minted.
I was referring to TRANSACTIONS. The block CONTAINING your transaction gets orphaned. It DOES NOT need to be YOUR block.
And YAC had some chain reorgs deeper than 50 blocks (50 confirmations of transaction!) as the consequence of all this badly-designed PoS bullshit.
Built-in POW-POS-POW-POS staggered blocks? What implications does it have other than fix the POW orphan problem (ie unintended consequences)?
It's not just pow-pos-pow-pos. It can just as well be pow-pos-pow-pow-pow-pow-pos. There's no limit on how much consecutive PoW blocks are there in the chain - just that 2 PoS blocks can't be directly linked.