I also wasn't paying attention to that. I had a lot of piggycoin I bought early on. Addresses created before what date are invalid?
As a general rule, people should not buy coins that do swaps like that, and if I had been aware of it I would have dumped all I own. Very annoying.
What was the cutoff date for valid addresses?
Please bear in mind that this was the original piggydev's doing and he's long gone:
https://twitter.com/piggydeveloper/status/866721934817599488Coin swaps... They have that kind of problem yes, but they do allow the coin to easily get a new codebase. In this case the coin swap was from proof of work to proof of stake with a lower supply. There were a different number (supply) of the PoW PIG so don't assume that you'd have the same amount of PIGGY. I see the ANN OP says: "(265,353M were mined in the old chain)", whereas the supply of New PiggyCoin [PIGGY] is just under 500 million.
The cutoff I'm not sure about; you would have to go looking through this thread and the old one (There is a link to the PIG thread in the OP). There was a site called CoinKing where folks had to send their PIG to get them swapped for PIGGY. I notice piggydev posted on 15th June 2014 about people messaging him worried about being late in the swap process:
https://bitcointalk.org/index.php?topic=633803.msg7326267#msg7326267. Eventually we new PiggyTeam ended the swap process, apparently on 12th July 2015.
Addresses beginning with a 'p' belong to the New PiggyCoin chain. Addresses beginning with a '6' would be of the old defunct PoW PIG and would be useless now.