Snapshot API

[martindale]

Retrieve global snapshot from HTTP endpoint; GET /snapshots/latest:

{
  heroes: [ ... ],
  mobs: [ ... ]
}

or

{
  clock: 693, // expected value = genesis time * interval (60s)
  created: (new Date()).toISOString(),
  content: {
    heroes: [ ... ],
    mobs: [ ... ]
  }
}