blockbaseopr

{
  "name": "blockcheck",
  "base": "",
  "fields": [
    {
      "name": "key",
      "type": "name"
    },
    {
      "name": "block_hash",
      "type": "string"
    },
    {
      "name": "timestamp",
      "type": "uint64"
    }
  ]
}