block

Description

---

API Methods

---

• getblockheader

  get best blockheader
  alias as fetch-header/getbestblockhash/getbestblockheader

  • Parameters (optional)
  1. -s [--hash] The Base16 block hash.
  2. -t [--height] The block height.

  • Returns
    Object - best block header

  • Example

    // Request
    curl -X POST --data '{"jsonrpc":"2.0","method":"getblockheader",
    "params":[],"id":26}' http://127.0.0.1:8820/rpc/v3
    
    // Response
    {
        "jsonrpc" : "2.0", 
        "id": 26, 
        "result": {
            "nonce": "7722496578557022359", 
            "hash": "fa26311f98371f83b737c07cc05d615e0c7b716188c64d24b6df23e17e01d691", 
            "bits": "1", 
            "previous_block_hash": "e1925937802ddd4cf4863ae4a1a33338877dccee1d3a0bbccc6d75b8c240675f", 
            "number": 1, 
            "transaction_count": "0", 
            "version": 1, 
            "mixhash": "47597797143417045886903555345346333109819709284889931755188005936950690907038", 
            "timestamp": "1509096803", 
            "merkle_tree_hash": "f91fcae5d3223441175735e7adb318004a6e7400eb01b6f3df13fa4b1e3feab9"
        }
    }

***

• getblock

  Get sepcified block header from wallet.

  • Parameters (optional)
  1. json use json format or not, default is true, that is ‘–json=true’
  2. tx_json use json format or not for txs, default is true, that is ‘–tx_json=true’
  • Parameters (positional)
  1. HASH_OR_HEIGH block hash or block height.

     params:[
         "HASH_OR_HEIGH"
     ]

  • Returns
    Object - block header with transactions

  • Example

    // Request
    curl -X POST --data '{"jsonrpc":"2.0","method":"getblock",
        "params":[0],"id":27}' http://127.0.0.1:8820/rpc/v3
    
    // Response
    {
        "id" : 27,
        "jsonrpc" : "2.0",
        "result" :
        {
            "bits" : "1",
            "hash" : "b81848ef9ae86e84c3da26564bc6ab3a79efc628239d11471ab5cd25c0684c2d",
            "merkle_tree_hash" : "2a845dfa63a7c20d40dbc4b15c3e970ef36332b367500fd89307053cb4c1a2c1",
            "mixhash" : "0",
            "nonce" : "0",
            "number" : 0,
            "previous_block_hash" : "0000000000000000000000000000000000000000000000000000000000000000",
            "timestamp" : 1486796400,
            "transaction_count" : 1,
            "version" : 1
            "transactions" :
            [
                {
                    "hash" : "2a845dfa63a7c20d40dbc4b15c3e970ef36332b367500fd89307053cb4c1a2c1",
                    "inputs" :
                    [
                        {
                            "previous_output" :
                            {
                                "hash" : "0000000000000000000000000000000000000000000000000000000000000000",
                                "index" : 4294967295
                            },
                            "script" : "[ 36653634633230393862383462303461306439663631613630643562633866356638306633376531396633616439633339626665343139646234323262333363 ]",
                            "sequence" : 0
                        }
                    ],
                    "lock_time" : "0",
                    "outputs" :
                    [
                        {
                            "address" : "MGqHvbaH9wzdr6oUDFz4S1HptjoKQcjRve",
                            "attachment" :
                            {
                                "type" : "etp"
                            },
                            "index" : 0,
                            "locked_height_range" : 0,
                            "script" : "dup hash160 [ 61fde3bd4e6955c99b16de2d71e2a369888a1c0b ] equalverify checksig",
                            "value" : 5000000000000000
                        }
                    ],
                    "version" : "0"
                }
            ]
        }
    }

  ---

• popblock

  popblock from height.

  • Parameters (positional)

  1. HEIGHT specify the starting point to pop out blocks. eg, if specified 1000000, then all blocks with height greater than or equal to 1000000 will be poped out.

     params:[
         "HEIGHT"
     ]

  • Returns
    String -

  • Example

    // Request
    curl -X POST --data '{"jsonrpc":"2.0","method":"popblock",
        "params":[1739530],"id":27}' http://127.0.0.1:8820/rpc/v3
    
    // Response
    {
        "id" : 27,
        "jsonrpc" : "2.0",
        "result" : "pop block from 1739530 finished."
    }