getHash

Example response

{
  "block": {
    "filehash": "9D2DB90A2FCC06F0016F40A9A6387BC83E3AC1B62C285218C102AC62FF84840E",
    "roothash": "D560A512DA6CA5852567EBC4F46C61CA09577E89BB441AF5303D1DDD1572F9B5",
    "seqno": 511,
    "shard": "a000000000000000"
  }
}