Fast submission

Robinhood sequencing is first-come, first-served (FCFS). A larger priority fee does not accelerate a transaction in the sequencer queue. Keep the connection warm and avoid client-side setup on the critical path.

The measured fast-submit design for ordinary raw submission is an earliest-wins fan to the sequencer intake, gateway, and a public-node channel. eth_sendRawTransaction is in the approved catalog. Its routing is confirmed by the intake node's two-method allowlist, but acceptance of a valid transaction has not been measured by anyone; a live test is planned on testnet chain 46630 (D16).

For the catalogued conditional method, Triport restricts fanout to eligible sequencer-intake and gateway paths and accepts the earliest successful result. This intake fanout is an internal implementation detail: clients use only POST /rpc/robinhood; no upstream IP or SNI configuration is required.

Use the generated eth_sendRawTransaction reference for ordinary submission and eth_sendRawTransactionConditional for conditional submission. Both remain accept_unverified until valid-transaction acceptance is measured.

Client recommendations:

• reuse HTTP connections with keep-alive;
• sign before the submission deadline;
• submit once and reconcile by returned transaction hash;
• do not raise the priority fee merely to seek queue priority;
• use explicit retry logic only for transport failures, never for deterministic transaction rejection.