eth_getUncleByBlockNumberAndIndex
Polygon API - Returns information about an uncle of a block by number and uncle index position.

Parameters

  • QUANTITY|TAG - a block number, or the string "earliest", "latest" or "pending", as in the default block parameter.
  • QUANTITY - the uncle's index position.
1
params: [
2
'0x29c', // 668
3
'0x0' // 0
4
]
Copied!

Returns

Object - A block object with the following fields, or null when no block was found:
  • number: QUANTITY - the block number. null when its pending block.
  • hash: DATA, 32 Bytes - hash of the block. null when its pending block.
  • parentHash: DATA, 32 Bytes - hash of the parent block.
  • nonce: DATA, 8 Bytes - hash of the generated proof-of-work. null when its pending block.
  • sha3Uncles: DATA, 32 Bytes - SHA3 of the uncles data in the block.
  • logsBloom: DATA, 256 Bytes - the bloom filter for the logs of the block. null when its pending block.
  • transactionsRoot: DATA, 32 Bytes - the root of the transaction trie of the block.
  • stateRoot: DATA, 32 Bytes - the root of the final state trie of the block.
  • receiptsRoot: DATA, 32 Bytes - the root of the receipts trie of the block.
  • miner: DATA, 20 Bytes - the address of the beneficiary to whom the mining rewards were given.
  • difficulty: QUANTITY - integer of the difficulty for this block.
  • totalDifficulty: QUANTITY - integer of the total difficulty of the chain until this block.
  • extraData: DATA - the "extra data" field of this block.
  • size: QUANTITY - integer the size of this block in bytes.
  • gasLimit: QUANTITY - the maximum gas allowed in this block.
  • gasUsed: QUANTITY - the total used gas by all transactions in this block.
  • timestamp: QUANTITY - the unix timestamp for when the block was collated.
  • transactions: Array - Array of transaction objects, or 32 Bytes transaction hashes depending on the last given parameter.
  • uncles: Array - Array of uncle hashes.

Example

​Alchemy Composer​

The Alchemy Composer allows you to make a no-code example request via your browser. Try it out above!

Request

Curl
Postman
1
curl https://polygon-mainnet.g.alchemyapi.io/v2/your-api-key \
2
-X POST \
3
-H "Content-Type: application/json" \
4
-d '{"jsonrpc":"2.0","method":"eth_getUncleByBlockNumberAndIndex","params":["0x29c", "0x0"],"id":0}'
Copied!
1
URL: https://polygon-mainnet.g.alchemyapi.io/v2/your-api-key
2
RequestType: POST
3
Body:
4
{
5
"jsonrpc":"2.0",
6
"method":"eth_getUncleByBlockNumberAndIndex",
7
"params":["0x29c", "0x0"],
8
"id":0
9
}
Copied!

Result

1
{
2
"jsonrpc": "2.0",
3
"id": 0,
4
"result": {
5
"difficulty": "0x57f117f5c",
6
"extraData": "0x476574682f76312e302e302f77696e646f77732f676f312e342e32",
7
"gasLimit": "0x1388",
8
"gasUsed": "0x0",
9
"hash": "0x932bdf904546a2287a2c9b2ede37925f698a7657484b172d4e5184f80bdd464d",
10
"logsBloom": "0x00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000",
11
"miner": "0x5bf5e9cf9b456d6591073513de7fd69a9bef04bc",
12
"mixHash": "0x4500aa4ee2b3044a155252e35273770edeb2ab6f8cb19ca8e732771484462169",
13
"nonce": "0x24732773618192ac",
14
"number": "0x299",
15
"parentHash": "0xa779859b1ee558258b7008bbabff272280136c5dd3eb3ea3bfa8f6ae03bf91e5",
16
"receiptsRoot": "0x56e81f171bcc55a6ff8345e692c0f86e5b48e01b996cadc001622fb5e363b421",
17
"sha3Uncles": "0x1dcc4de8dec75d7aab85b567b6ccd41ad312451b948a7413f0a142fd40d49347",
18
"size": "0x21d",
19
"stateRoot": "0x2604fbf5183f5360da249b51f1b9f1e0f315d2ff3ffa1a4143ff221ad9ca1fec",
20
"timestamp": "0x55ba4827",
21
"transactionsRoot": "0x56e81f171bcc55a6ff8345e692c0f86e5b48e01b996cadc001622fb5e363b421",
22
"uncles": []
23
}
24
}
Copied!

​

Last modified 23d ago