POST
/
evm
ots_getTransactionBySenderAndNonce
curl --request POST \
  --url https://hyperliquid-mainnet.core.chainstack.com/4f8d8f4040bdacd1577bff8058438274/evm \
  --header 'Content-Type: application/json' \
  --data '{
  "jsonrpc": "2.0",
  "method": "ots_getTransactionBySenderAndNonce",
  "params": [
    "0x5555555555555555555555555555555555555555",
    0
  ],
  "id": 1
}'
{
  "jsonrpc": "2.0",
  "id": 1,
  "result": {
    "hash": "0xf94f3d2ed5b59aefb6a0e566af8e86552014d84f6ed2f38a1366dedffe723381",
    "nonce": "0x0",
    "from": "0x5555555555555555555555555555555555555555"
  }
}
The ots_getTransactionBySenderAndNonce JSON-RPC method retrieves a transaction hash by specifying the sender address and nonce on the Hyperliquid EVM blockchain. This Otterscan-specific method helps locate transactions when you know the sender and nonce but not the transaction hash.
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​
Parameters

  1. sender address (string, required): The address that sent the transaction
  2. nonce (integer, required): The nonce value used for the transaction

​
Response

The method returns the transaction hash if found, or null if no transaction exists with the specified sender and nonce.

​
Response structure

  • result — the transaction hash (32-byte hex string), or null if not found

​
Usage example

Shell
curl -X POST https://hyperliquid-mainnet.core.chainstack.com/4f8d8f4040bdacd1577bff8058438274/evm \
  -H "Content-Type: application/json" \
  -d '{
    "jsonrpc": "2.0",
    "method": "ots_getTransactionBySenderAndNonce",
    "params": ["0x5555555555555555555555555555555555555555", 0],
    "id": 1
  }'

​
Example response (transaction found)

{
  "jsonrpc": "2.0",
  "id": 1,
  "result": "0xf94f3d2ed5b59aefb6a0e566af8e86552014d84f6ed2f38a1366dedffe723381"
}

​
Example response (not found)

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

​
Finding multiple transactions

To find a sequence of transactions from an address: 
// Find transactions with nonces 0 through 5
for (let nonce = 0; nonce <= 5; nonce++) {
  const params = ["0x5555555555555555555555555555555555555555", nonce];
  // Make RPC call with params
}

​
Use cases

The ots_getTransactionBySenderAndNonce method is essential for:
  • Transaction recovery: Find lost transaction hashes using sender and nonce
  • Wallet debugging: Track down specific transactions from an account
  • Nonce management: Verify which nonces have been used by an address
  • Transaction replacement: Find original transactions before replacement
  • Account auditing: Systematically review all transactions from an address
  • Support tools: Help users find their transactions without the hash
  • Forensic analysis: Track transaction sequences from specific accounts
  • Testing verification: Confirm test transactions were submitted
  • MEV analysis: Study transaction ordering and nonce patterns
  • Integration recovery: Recover from lost transaction tracking in dApps
This method is particularly useful when debugging wallet issues or when transaction hashes weren’t properly stored by an application.

Body

application/json
​
jsonrpc
enum<string>
default:2.0
required

JSON-RPC version

Available options:
2.0
​
method
enum<string>
default:ots_getTransactionBySenderAndNonce
required

The RPC method name

Available options:
ots_getTransactionBySenderAndNonce
​
params
any[]
required

Parameters: [sender address, nonce]

​
id
integer
default:1
required

Request identifier

Response

200 - application/json

Successful response with transaction data

​
jsonrpc
string

JSON-RPC version

​
id
integer

Request identifier

​
result
object

Transaction object or null if not found