Parameters

Object Name	Required	Type	Detail
`BLOCK PARAMETER`	✅	String/Object	A hex code of an integer that represents the block number, "latest", "earliest" , "pending" , or hash of a block. The hash of a block is an object specified as: `{"blockHash": "\<hash_value>"}`. Learn more here.
`UNCLE INDEX POSITION`	✅	String	A hex code of an integer that represents the uncle's index position.

"params": [
    "0xf97a55",
    "0x0"
]

Result

A block object, or null when no block uncle was found.

Result Fields

Key	Type	Detail
`difficulty`	String	A hex code of an integer that represents the difficulty for this block.
`extraData`	String	The "extra data" field of this block.
`gasLimit`	String	A hex code of an integer that represents the maximum gas allowed in this block.
`gasUsed`	String	A hex code of an integer that represents the total used gas by all transactions in this block.
`hash`	String	Hash of the block. `null` if the returned block is a pending block.
`logsBloom`	String	The bloom filter for the logs of the block. `null` if the returned block is a pending block.
`miner`	String	Address of the beneficiary to whom the mining rewards were given.
`nonce`	String	Hash of the generated proof-of-work. `null` if the returned block is a pending block.
`number`	String	A hex code of an integer that represents the block number. `null` if the returned block is a pending block.
`parentHash`	String	Hash of the parent block.
`receiptsRoot`	String	The root of the receipts trie of the block.
`sha3Uncles`	String	SHA3 of the uncles data in the block.
`size`	String	A hex code of an integer that represents the size of this block in bytes.
`stateRoot`	String	The root of the final state trie of the block.
`timestamp`	Integer	The unix timestamp for when the block was collated.
`totalDifficulty`	String	A hex code of an integer that represents the difficulty of the chain until this block.
`transactionsRoot`	String	The root of the transaction trie of the block.
`uncles`	Array	Array of uncle hashes.

🚧
NOTE: The return does not contain a list of transactions in the uncle block, to get this, make another request to eth_getBlockByHash or eth_getBlockByNumber

Example

Request

curl <your-endpoint> \
    -X POST \
    -H "Content-Type: application/json" \
    -d '{"jsonrpc":"2.0","method":"eth_getUncleByBlockNumberAndIndex","params": ["0xf97a55","0x0"],"id":1}'

Return

{
    "id": 1,
    "jsonrpc": "2.0",
    "result": null
}