wt.boid

{
  "name": "anchorblock",
  "base": "",
  "fields": [
    {
      "name": "block",
      "type": "sblockheader"
    },
    {
      "name": "active_nodes",
      "type": "uint16[]"
    },
    {
      "name": "node_count",
      "type": "uint64"
    }
  ]
}