Base Transactions

The blxr_tx endpoint allows users to send a single transaction using the BDN. The endpoint returns a transaction hash.

This service is available via Cloud API only.

For latency-sensitive orderflow, WebSocket is recommended and can provide latency improvement over HTTP/HTTPS. If you prefer to short-lived connections, use HTTP over HTTPS for improved latency.

Submission Endpoint

• Method: blxr_tx

• Cloud API Endpoint: api.blxrbdn.com

• Request type: HTTPS,WSS

Parameters

Parameter	Description	Instructions & Notes
transaction	Raw transactions bytes without 0x prefix.	[Required] Learn more about constructing the transaction here.
blockchain_network	Blockchain network name.	[Required] Set to Base-Mainnet.
backrunme_reward_address	Wallet address String to receive BackRunMe rewards to	[Optional] Transactions are automatically enrolled in Backrunning services, from which rewards are shared with the specified backrunme_reward_address.

Examples

wscat WS

wscat -c wss://api.blxrbdn.com/ws --header "Authorization: <YOUR-AUTHORIZATION-HEADER>"
> {"jsonrpc": "2.0", "id": 1, "method": "blxr_tx", "params":
   {"transaction": "f86b0184...e0b58219", "blockchain_network": "Base-Mainnet"}}
< ...

HTTPS POST

curl -X POST https://api.blxrbdn.com \
  -H "Authorization: <YOUR-AUTHORIZATION-HEADER>" \
  -H "Content-Type: application/json" \
  -d '{
    "jsonrpc": "2.0",
    "id": 1,
    "method": "blxr_tx",
    "params": {
      "transaction": "f86b0184...e0b58219",
      "blockchain_network": "Base-Mainnet"
    }
  }'

Response

{
    "jsonrpc": "2.0", 
    "id": "1", 
    "result": {
        "txHash": "ffd59870844e5...bfa54a69"
    }
}