Paying more does not imply a queue jump
Robinhood describes transaction ordering by sequencer arrival rather than an Ethereum-style priority-gas auction. An application should not assume that raising a priority fee moves a transaction ahead of earlier arrivals. Delivery, validation, execution and settlement remain separate stages.
Read the current fee estimate
[{"jsonrpc":"2.0","id":"price","method":"eth_gasPrice","params":[]},{"jsonrpc":"2.0","id":"estimate","method":"eth_estimateGas","params":[{"from":"SENDER","to":"TARGET","data":"CALLDATA","value":"0x0"}]}]Use the real transaction fields and the current chain fee model. Robinhood fees include L2 execution and the cost of data posted to Ethereum. A simple ETH-only gas heuristic can be misleading for larger contract calls.
Measure the submission path
- Verify chain ID, nonce, balance and signed payload before timing a send.
- Record local submission start and RPC acknowledgement separately.
- Track the receipt block and execution status.
- Record later settlement evidence under the application's finality policy.
Optimize the actual bottleneck
Reduce unnecessary signing, request serialization and network round trips when delivery timing matters. Keep nonces coordinated and avoid sending conflicting operations from several workers. Compare delivery results with the same payload class and observation environment. This workflow produces useful evidence without claiming that a particular endpoint guarantees ordering, inclusion or profitable execution. Supanode's product documentation defines access and supported methods; the chain defines its sequencing rules.