hmy_getBlockByNumber

GetBlockByNumber

Get block by its index in the blockchain.

API v1

Parameters

1. String - The block number.

2. Boolean - If true, the returned block will contain all transactions in the block.

Returns

• number - Number: The block number. null when its pending block.

• hash 32 Bytes - String: Hash of the block. null when its pending block.

• parentHash 32 Bytes - String: Hash of the parent block.

• nonce 8 Bytes - String: Hash of the generated proof-of-work. null when its pending block.

• logsBloom 256 Bytes - String: The bloom filter for the logs of the block. null when its pending block.

• transactionsRoot 32 Bytes - String: The root of the transaction trie of the block

• stateRoot 32 Bytes - String: The root of the final state trie of the block.

• miner - String: The address of the beneficiary to whom the mining rewards were given.

• difficulty - String: Integer of the difficulty for this block.

• extraData - String: The “extra data” field of this block.

• size - Number: Integer the size of this block in bytes.

• gasLimit - Number: The maximum gas allowed in this block.

• gasUsed - Number: The total used gas by all transactions in this block.

• timestamp - Number: The unix timestamp for when the block was collated.

• stakingTransactions - Array: Array of staking transactions object; are present by default

• transactions - Array: Array of transaction objects; absent if second parameter is false.

• uncles - Array: Array of uncle hashes.

Sample Curl Request

curl -d '{
    "jsonrpc":"2.0",
    "method":"hmy_getBlockByNumber",
    "params":[
    "0x66", true],
    "id":1
}' -H "Content-Type:application/json" -X POST "https://api.s0.b.hmny.io"

Sample Curl Response

{
    "jsonrpc": "2.0",
    "id": 1,
    "result": {
        "difficulty": 0,
        "extraData": "0x",
        "gasLimit": "0x4f6e2a",
        "gasUsed": "0x0",
        "hash": "0x660fe701f580ffebfcfb4af1836c9929c1fd0014d8d79d60749fecf52df7a90d",
        "logsBloom": "0x00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000",
        "miner": "0x0b585f8daefbc68a311fbd4cb20d9174ad174016",
        "mixHash": "0x0000000000000000000000000000000000000000000000000000000000000000",
        "nonce": 0,
        "number": "0x66",
        "parentHash": "0xcac989d8ba18e88ab245686e491a171d46b759e85290a3fc6df80553d2ac582f",
        "receiptsRoot": "0x56e81f171bcc55a6ff8345e692c0f86e5b48e01b996cadc001622fb5e363b421",
        "size": "0x25d",
        "stateRoot": "0x830ff6830857f88bdc56141449d0729a663c6413dc0dc909fc1f3715dd576cee",
        "timestamp": "0x5d570a3f",
        "transactions": [],
        "transactionsRoot": "0x56e81f171bcc55a6ff8345e692c0f86e5b48e01b996cadc001622fb5e363b421",
        "uncles": []
    }
}

API v2

Parameters

1. Number - The block number.

2. blockArgs - optional args struct in json format (should be used just with { })

   1. fullTx - Bool: To show full tx or not

   2. withSigners- Bool: Include block signes in blocks or not

   3. inclStaking - Bool: To show staking txs or not

Returns

• number - Number: The block number. null when its pending block.

• hash 32 Bytes - String: Hash of the block. null when its pending block.

• parentHash 32 Bytes - String: Hash of the parent block.

• nonce 8 Bytes - String: Hash of the generated proof-of-work. null when its pending block.

• logsBloom 256 Bytes - String: The bloom filter for the logs of the block. null when its pending block.

• transactionsRoot 32 Bytes - String: The root of the transaction trie of the block

• stateRoot 32 Bytes - String: The root of the final state trie of the block.

• miner - String: The address of the beneficiary to whom the mining rewards were given.

• difficulty - String: Integer of the difficulty for this block.

• extraData - String: The “extra data” field of this block.

• size - Number: Integer the size of this block in bytes.

• gasLimit - Number: The maximum gas allowed in this block.

• gasUsed - Number: The total used gas by all transactions in this block.

• timestamp - Number: The unix timestamp for when the block was collated.

• stakingTransactions - Array: Array of staking transactions object; absent if inclStaking is false, are present by default

• transactions - Array: Array of transaction objects; absent if second parameter is false.

• uncles - Array: Array of uncle hashes.

Sample Curl Request

curl -d '{
    "jsonrpc":"2.0",
    "method":"hmyv2_getBlockByNumber",
    "params":[
    1, 
    {
      "fullTx": true,
      "inclTx": true,
      "withSigners": true,
    }],
    "id":1
}' -H "Content-Type:application/json" -X POST "https://api.s0.b.hmny.io"

Sample Curl Response

{
    "jsonrpc": "2.0",
    "id": 1,
    "result": {
        "difficulty": 0,
        "extraData": "0x",
        "gasLimit": 4716988,
        "gasUsed": 0,
        "hash": "0xa3b7dd8626bfc6f6037c06401ceaa752bb54f0539535aea9883170e305e3b6c5",
        "logsBloom": "0x00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000",
        "miner": "0x0b585f8daefbc68a311fbd4cb20d9174ad174016",
        "mixHash": "0x0000000000000000000000000000000000000000000000000000000000000000",
        "nonce": 0,
        "number": 1,
        "parentHash": "0x34a8b155f90b8fc22342fc8b5d1c969ed836a2f666c506e4017b570dc337e88c",
        "receiptsRoot": "0x56e81f171bcc55a6ff8345e692c0f86e5b48e01b996cadc001622fb5e363b421",
        "signers": [
            "one1pdv9lrdwl0rg5vglh4xtyrv3wjk3wsqket7zxy",
            "one12fuf7x9rgtdgqg7vgq0962c556m3p7afsxgvll",
            "one1pf75h0t4am90z8uv3y0dgunfqp4lj8wr3t5rsp",
            "one1spshr72utf6rwxseaz339j09ed8p6f8ke370zj",
            "one1d2rngmem4x2c6zxsjjz29dlah0jzkr0k2n88wc",
            "one1a50tun737ulcvwy0yvve0pvu5skq0kjargvhwe",
            "one103q7qe5t2505lypvltkqtddaef5tzfxwsse4z7"
        ],
        "size": 827,
        "stakingTransactions": [],
        "stateRoot": "0xae22370df046aa8c4470a032ecc88609efc08438abe79fd9e7f134b077a11fb6",
        "timestamp": 1580419937,
        "transactions": [],
        "transactionsRoot": "0x56e81f171bcc55a6ff8345e692c0f86e5b48e01b996cadc001622fb5e363b421",
        "uncles": []
    }
}