eth_getUncleByBlockNumberAndIndex

Returns information about the 'Uncle' of a block by hash and the Uncle index position.

REQUEST

POST https://<network>.chainrpc.io/v3/YOUR-API-KEY

HEADERS

Content-Type: application/json

REQUEST PARAMS

• BLOCK PARAMETER [required] - hexadecimal block number, or the string "latest", "earliest" or "pending".

• UNCLE INDEX POSITION [required] - a hex of the integer indicating the uncle's index position.

EXAMPLE

## JSON-RPC over HTTPS POST
## Replace YOUR-API-KEY with an API key from your chainRPC Dashboard
## You can also replace mainnet with a different supported network
curl https://eth.chainrpc.io/v3/YOUR-API-KEY \
    -X POST \
    -H "Content-Type: application/json" \
    -d '{"jsonrpc":"2.0","method":"eth_getUncleByBlockNumberAndIndex","params": ["0x29c","0x0"],"id":1}'

## JSON-RPC over WSS
## Replace YOUR-API-KEY with an API key from your chainRPC Dashboard
## You can also replace mainnet with a different supported network
wscat -c wss://eth.chainrpc.io/v3/YOUR-API-KEY
>{"jsonrpc":"2.0","method":"eth_getUncleByBlockNumberAndIndex","params": ["0x29c","0x0"],"id":1}

RESPONSE

RESULT FIELDS

• BLOCK - A block object, or null when no block was found

  • number: the block number. null when its pending block.

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

  • parentHash: 32 Bytes - hash of the parent block.

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

  • sha3Uncles: 32 Bytes - SHA3 of the uncles data in the block.

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

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

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

  • receiptsRoot: 32 Bytes - the root of the receipts trie of the block.

  • miner: 20 Bytes - the address of the beneficiary to whom the mining rewards were given.

  • difficulty: hexadecimal of the difficulty for this block.

  • totalDifficulty: hexadecimal of the total difficulty of the chain until this block.

  • extraData: the "extra data" field of this block.

  • size: hexadecimal the size of this block in bytes.

  • gasLimit: the maximum gas allowed in this block.

  • gasUsed: the total used gas by all transactions in this block.

  • timestamp: the unix timestamp for when the block was collated.

  • uncles: an Array of uncle hashes.

Note: An uncle doesn't contain individual transactions.

BODY

{
    "jsonrpc": "2.0",
    "id": 1,
    "result": {
        "difficulty": "0x57f117f5c",
        "extraData": "0x476574682f76312e302e302f77696e646f77732f676f312e342e32",
        "gasLimit": "0x1388",
        "gasUsed": "0x0",
        "hash": "0x932bdf904546a2287a2c9b2ede37925f698a7657484b172d4e5184f80bdd464d",
        "logsBloom": "0x00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000",
        "miner": "0x5bf5e9cf9b456d6591073513de7fd69a9bef04bc",
        "mixHash": "0x4500aa4ee2b3044a155252e35273770edeb2ab6f8cb19ca8e732771484462169",
        "nonce": "0x24732773618192ac",
        "number": "0x299",
        "parentHash": "0xa779859b1ee558258b7008bbabff272280136c5dd3eb3ea3bfa8f6ae03bf91e5",
        "receiptsRoot": "0x56e81f171bcc55a6ff8345e692c0f86e5b48e01b996cadc001622fb5e363b421",
        "sha3Uncles": "0x1dcc4de8dec75d7aab85b567b6ccd41ad312451b948a7413f0a142fd40d49347",
        "size": "0x21d",
        "stateRoot": "0x2604fbf5183f5360da249b51f1b9f1e0f315d2ff3ffa1a4143ff221ad9ca1fec",
        "timestamp": "0x55ba4827",
        "totalDifficulty": null,
        "transactionsRoot": "0x56e81f171bcc55a6ff8345e692c0f86e5b48e01b996cadc001622fb5e363b421",
        "uncles": []
    }
}