🟪 Polygon
eth_getUncleByBlockHashAndIndex

Polygon API Documentation


eth_getUncleByBlockHashAndIndex RPC Method

eth_getUncleByBlockHashAndIndex JSON-RPC method on Polygon returns information about the 'Uncle' of a block by hash and the Uncle index position.

Parameters

BlockHash - [required] - String- The hash (32 bytes) of the block to retrieve.

Uncle index position - [required] - An integer indicating the uncle's index position encoded as hexadecimal.

params: [
    '0x6730865e4d068c4b0246d7fbe609d7a2cebacea77c7bc5df0d21d77d75d9dcc6', '0x0'
    ]

Returns

  • Block object or null when no block was found. Properties:

    • number - The block number. Null when the returned block is the pending block.

    • hash 32 Bytes - Hash of the block. In case of a pending block, it returns null.

    • parentHash 32 Bytes - Hash of the parent block.

    • nonce 8 Bytes - Hash of the generated proof-of-work. Null if pending.

    • difficulty - The integer of the difficulty for this block encoded as a hexadecimal string.

    • totalDifficulty - Hexadecimal of the total difficulty of the chain until this block.

    • logsBloom - The bloom filter for the logs of the block. null if pending.

    • sha3uncles - SHA3 of the uncles data in the block.

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

    • timestamp - The Unix timestamp for when the block was collated.

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

    • miner 20 Bytes - The address of the miner receiving the reward.

    • transactionsRoot - The root of the transaction trie of the block.

    • stateRoot - The root of the final state trie of the block.

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

    • uncles - An Array of uncle hashes.

    • transactions - Array of transaction objects, or 32 Bytes transaction hashes depending on the last given parameter.

    • gasUsed - The total used gas by all transactions in this block as a hexadecimal string.

    • gasLimit - The maximum gas allowed in this block encoded as a hexadecimal.

    • mixHash - A string of a 256-bit hash encoded as a hexadecimal.

    • baseFeePerGas - A string of the base fee encoded in hexadecimal format.

Request

POST https://<network>.chainnodes.org/YOUR-API-KEY

Example

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  • HTTPS POST Request with a JSON RPC call in the body
  • Replace YOUR-API-KEY with the API key from your CHAINNODES.ORG Dashboard
  • You can use a different supported network by replacing polygon-mainnet
curl https://polygon-mainnet.chainnodes.org/YOUR-API-KEY \
    -X POST \
    -H "Content-Type: application/json" \
    -d '{"jsonrpc":"2.0","method":"eth_getUncleByBlockHashAndIndex","params": ["0x6730865e4d068c4b0246d7fbe609d7a2cebacea77c7bc5df0d21d77d75d9dcc6","0x0"],"id":1}'

Body

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

🔌 To use eth_getRawTransactionByBlockNumberAndIndex you must be connected to a blockchain node.

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eth_getUncleByBlockHashAndIndex Use cases

  1. Enhancing Blockchain Understanding: *: Developers working on the Polygon network can use the eth_getUncleByBlockHashAndIndex method to gain more understanding of the network's structure. By retrieving uncle blocks, developers can study how Polygon, an Ethereum-compatible blockchain, handles and rewards blocks that aren't included in the main chain but contribute to network security.
  2. Powering Blockchain Explorers: Blockchain explorers, which provide a user interface for navigating the Polygon network, can use the eth_getUncleByBlockHashAndIndex method to display detailed information about uncle blocks.
  3. Improving Network Monitoring Tools: Network monitoring tools can use the eth_getUncleByBlockHashAndIndex method to track the rate of uncle blocks. A high rate of uncle blocks could indicate network congestion or slow block propagation, allowing for fast detection and response to network performance problems.

JSON-RPC API Documentation by CHAINNODES is based on Erigon node client. Contact us if you are interested in specific methods that are only available on geth, besu, Nethermind or reth

eth_getUncleCountByBlockNumbereth_getUncleByBlockNumberAndIndex