Does Ripple use NTP or expect the nodes to do so?
If not, why not? It seems that Ripple is a little more closed than your standard cryptocurrency, so this doesn't seem like an excessive demand.
Bitcoin Stack Exchange is a question and answer site for Bitcoin crypto-currency enthusiasts. It only takes a minute to sign up.Sign up to join this community
The Ripple server has SNTP support to tolerate system clocks that are inaccurate.
The consensus process also builds a consensus network time. Each validator pulls the consensus network time a bit closer to their local time. This consensus network time becomes the close times included in ledgers that support features like expiring cross-currency offers.