kaia_getTransactionByBlockNumberAndIndex

The eth_getTransactionByBlockNumberAndIndex method returns information about a transaction by block number and transaction index position. This method is similar to eth_getTransactionByBlockHashAndIndex but uses block number instead of hash, making it more convenient when working with sequential block processing or when you know the block height.

This method is particularly useful for chronological block scanning, processing transactions in ascending block order, building analytics pipelines that iterate through blocks sequentially, and querying transactions when you only know the block number. It's commonly used in blockchain indexers, transaction scanners, and data analysis tools. Note that using block numbers during potential chain reorganizations may reference different blocks than intended, so eth_getTransactionByBlockHashAndIndex is preferred when immutability is critical.

Parameters

parameter	type	description
blockParameter	string (required)	Block number in hex or tag (latest, earliest, pending)
transactionIndex	string (required)	Transaction index position in hex

Return Object

The method returns a transaction object, or null if no transaction exists at the specified index or if the block doesn't exist:

field	type	description
blockHash	string	Hash of the block containing this transaction (32 bytes)
blockNumber	string	Block number containing this transaction (hex)
from	string	Address of the sender (20 bytes)
to	string	Address of the receiver (20 bytes), null for contract creation transactions
gas	string	Gas limit provided by the sender (hex)
gasPrice	string	Gas price provided by the sender in wei (hex), for legacy and EIP-2930 transactions
maxFeePerGas	string	Maximum total fee per gas the sender is willing to pay (hex, in wei), for EIP-1559 transactions
maxPriorityFeePerGas	string	Maximum priority fee per gas (tip) the sender is willing to pay (hex, in wei), for EIP-1559 transactions
hash	string	Hash of the transaction (32 bytes)
input	string	The data sent along with the transaction (hex-encoded). Contains the function signature and encoded parameters for contract calls
nonce	string	Number of transactions sent by the sender prior to this one (hex)
value	string	Value transferred in wei (hex)
transactionIndex	string	Integer of the transaction's index position in the block (hex)
type	string	Transaction type: 0x0 for legacy, 0x1 for EIP-2930, 0x2 for EIP-1559
chainId	string	Chain ID of the transaction (hex)
v	string	ECDSA recovery id
r	string	ECDSA signature r
s	string	ECDSA signature s

Request Example

Request

Response Example

Response