eth_sendRawTransaction

or eth_sendPrivateRawTransaction

{
  "jsonrpc": "2.0",
  "id": "1",
  "method": "eth_sendRawTransaction”,
  "params": ["0x…4b"],  // Signed raw tx hex
}

CURL example

curl -s --data '{"jsonrpc": "2.0","id": "1","method": "eth_sendRawTransaction","params": ["0x…12"]}' -H "Content-Type: application/json" -X POST https://rpc.titanbuilder.xyz

Response example

{"result":200,"error":null,"id":1}