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getblockheader Method

Returns the corresponding block header information according to the specified script hash or index.

The usage of this method is as same as getblock . The only difference is that getblockeader gets the block header and getblock gets the complete block.

You must install the plugin RpcServer before you can invoke the method.

Parameter Description

  • hash | index: The block script hash or index (i.e. block height=number of blocks - 1).

  • verbose: Optional, the default value is false.

    • When verbose is false, serialized information of the block is returned in a hexadecimal string. If you need the detailed information, use the SDK for deserialization.

    • When verbose is true or 1, detailed information of the block is returned in Json format.

Example

Example 1 - invoke with block hash

Request body:

{
  "jsonrpc": "2.0",
  "method": "getblockheader",
  "params": [140],
  "id": 1
}

or

{
  "jsonrpc": "2.0",
  "method": "getblockheader",
  "params": ["0x3d87f53c51c93fc08e5ccc09dbd9e21fcfad4dbea66af454bed334824a90262c"],
  "id": 1
}

Response body:

{
    "jsonrpc": "2.0",
    "id": 1,
    "result": "AAAAAFrf0tgylRv20FkZygEC2UDiMHJTukXJPQ/DFP5sezdzm3A7VffHxK0b4rwXh/xR/zV24Mj6+Vhq25qoN1WlxRIBIKp7dwEAAIwAAADitlMicpPpnE8pBtU1U6u0pnLfhgFCDEDGZIUihuWK6RLqloq6UiKxkoW0QFhqGhoQU3cK5IQRATFUY807W/hGmYqP80N8qjKQ/e4o8URTzgRUXJKXf1/sKxEMIQLO1DI5fdxE7boDHAvDuTPyj92Wd3kteyDmwDbdqqzx4hELQRON768A"
}

Example 2 - 获取 JSON 格式的区块信息

请求正文:

{
  "jsonrpc": "2.0",
  "method": "getblockheader",
  "params": [140, true],
  "id": 1
}

{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "getblockheader",
  "params": ["0x3d87f53c51c93fc08e5ccc09dbd9e21fcfad4dbea66af454bed334824a90262c", true]
}

响应正文:

{
    "jsonrpc": "2.0",
    "id": 1,
    "result": {
        "hash": "0x3d87f53c51c93fc08e5ccc09dbd9e21fcfad4dbea66af454bed334824a90262c",
        "size": 213,
        "version": 0,
        "previousblockhash": "0x73377b6cfe14c30f3dc945ba537230e240d90201ca1959d0f61b9532d8d2df5a",
        "merkleroot": "0x12c5a55537a89adb6a58f9fac8e07635ff51fc8717bce21badc4c7f7553b709b",
        "time": 1612687482881,
        "primary": 0,
        "index": 140,
        "nextconsensus": "NgaiKFjurmNmiRzDRQGs44yzByXuSkdGPF",
        "witnesses": [
            {
                "invocation": "DEDGZIUihuWK6RLqloq6UiKxkoW0QFhqGhoQU3cK5IQRATFUY807W/hGmYqP80N8qjKQ/e4o8URTzgRUXJKXf1/s",
                "verification": "EQwhAs7UMjl93ETtugMcC8O5M/KP3ZZ3eS17IObANt2qrPHiEQtBE43vrw=="
            }
        ],
        "confirmations": 41,
        "nextblockhash": "0xd087785fc3cf5b59c6a4631bdbdd63ed3e44947c22eb69ba866ea9291473b2b5"
    }
}