eth_getUncleCountByBlockHash

Get the number of uncles in a block by block hash

Defined in the Ethereum JSON-RPC Specification

Returns the number of uncles in a block by block hash.

Parameters

blockHash · string · required

Hash of a block (32 bytes).

Returns

result · string

The number of uncles in this block as a hexadecimal string.

Request

{
  "id": 1,
  "jsonrpc": "2.0",
  "method": "eth_getUncleCountByBlockHash",
  "params": [
    "0xc6ef2fc5426d6ad6fd9e2a26abeab0aa2411b7ab17f30a99d3cb96aed1d1055b"
  ]
}

Success Response

{
  "id": 1,
  "jsonrpc": "2.0",
  "result": "0x1"
}

Error Handling

Code	Message	Description
-32602	Invalid block hash	The provided block hash is invalid
4100	Requested method not supported	The method is not supported by the wallet

Uncle blocks are blocks that were mined but not included in the main blockchain. This method returns their count for a specific block.