Part of the way that FreeNET addresses the dating issue with hashes is to attach a version number to the content. A monotonic integer that goes up each time it

Part of the way that FreeNET addresses the dating issue with hashes is to attach a version number to the content. A monotonic integer that goes up each time it's updated. In this case then though the hash can't be represented directly by the content but is instead more like a UUID. Which puts you back at your second point which FreeNET doesn't really have a way to deal with either, so it ends up people trading urls on message boards essentially.