<div dir="ltr"><div>That looks very interesting. But is effectively blocking old clients
from seeing transactions really safe? After all, such transactions are
still confirmed on the new chain. A person might try to send a similar
transaction several times, perhaps with increasing fees in an attempt to
get it to confirm and end up paying someone several times.<br><br></div>Maybe we could require the tx version number to be increased as well so transactions sent from old clients would never confirm? Perhaps your code already includes this idea, I need to look at it more closely.<br></div>