Robinhood Chain Transaction Sending: Faster, More Consistent Positioning

BlockRazor has completed a major acceleration of its Robinhood Chain Transaction Sending service. In an Ohio benchmark covering 703 rounds, BlockRazor won 60.46% (425/703) of same-nonce races against the Robinhood Chain official Sequencer endpoint. In a separate 703-round paired-transaction benchmark, BlockRazor landed in an earlier block or obtained a better Transaction Index in the same block in 54.62% (384/703) of comparable rounds.

For sniping, copy trading, quant trading, searchers, and orderflow projects, the result is a lower-latency and more stable submission path that improves the probability of landing near the intended onchain position.

Key takeaways

• In the Ohio same-nonce benchmark, all 703 attempted rounds produced a result. BlockRazor won 60.46%, compared with 39.54% for the official endpoint.
• The Ohio position benchmark also produced 703/703 comparable rounds, with no failed sends or missing receipts. BlockRazor's total lead rate was 54.62%.
• BlockRazor landed in an earlier block in 0.43% (3/703) of rounds and obtained a better Transaction Index in the same block in 54.20% (381/703).
• Sequencer Feed and Transaction Sending can form an end-to-end loop for earlier data reception, faster decisions, and lower-latency submission.

Why transaction-submission speed affects ordering on Robinhood Chain

Robinhood Chain documentation states that the network uses first-come, first-served sequencing: order is determined by arrival time at the Sequencer, and a transaction cannot simply pay a higher fee to bypass one that arrived earlier. The official documentation also says that the public endpoints are rate-limited and are not recommended for production use.

For latency-sensitive systems, the optimization target is therefore more specific than whether a transaction is eventually included. What matters is whether the transaction reaches an earlier block and, when two transactions land in the same block, whether it receives a lower Transaction Index.

Benchmark 1: Same-nonce transaction race in Ohio

The same-nonce benchmark was run from Ohio. In every round, the same client submitted a pair of transactions with the same nonce: one through BlockRazor Transaction Sending and one directly to the official endpoint at https://sequencer.mainnet.chain.robinhood.com. The requests were triggered in the same round with matching transaction configuration, apart from the recipient address used to identify each route. Because the transactions shared a nonce, only the route that reached Sequencer ordering first could win the round.

All 703 attempted rounds were resolved: there were no draws, no rounds without a winner, and no missing winner records. BlockRazor won 425 rounds, producing a 60.46% win rate, while the official endpoint won 278 rounds, or 39.54%.

Benchmark 2: Better Indexes Reveal Onchain Positioning Advantage

A same-nonce benchmark can only show which route's transaction enters Sequencer ordering first. Because only one transaction in each pair can be included, it cannot compare the Transaction Index ultimately achieved by both routes. BlockRazor therefore added a paired-transaction position benchmark.

Each Ohio sample in the benchmark contains two independent, valid transactions. One is submitted through BlockRazor Transaction Sending and the other directly to https://sequencer.mainnet.chain.robinhood.com. The transactions use independent, pre-funded test accounts with matching gas settings, calldata, transaction type, and execution complexity. Both requests are triggered by the same client in the same round. Only pairs in which both transactions are successfully included are counted. The test records block height and Transaction Index, then classifies each result in this order:

1. Earlier block: The BlockRazor transaction is included at a lower block height.
2. Same block, better index: Both transactions are in the same block and the BlockRazor transaction has a lower transactionIndex.
3. Total lead rate: The share of valid pairs in either of the two BlockRazor-leading categories above.
4. Average index difference across all same-block rounds: For each same-block pair, calculate official_transaction_index - blockrazor_transaction_index, retaining both positive and negative values. Across all 696 same-block rounds, the average was 0.1796.
5. Average positive index lead: Apply the same difference only to the 381 same-block rounds in which BlockRazor had the lower Index. The average BlockRazor lead in those rounds was 1.3832 positions.

All 703 attempted rounds were comparable, with no failed transaction sends and no missing receipts. BlockRazor led in 384 rounds: 3 by landing in an earlier block and 381 by receiving a better Transaction Index in the same block. A total of 696 pairs landed in the same block. Across all same-block pairs, including both positive and negative differences, BlockRazor's average Index advantage was 0.1796 positions; across the 381 positive same-block wins, the average lead was 1.3832 positions. For latency-sensitive sniping, copy-trading, quant-trading, and searcher strategies, these onchain measurements are more representative than API response time alone.

Sequencer Feed plus Transaction Sending: A low-latency receive-to-send loop

For trading strategies that depend on local node state updates, total reaction time includes receiving the latest state, updating the local node, identifying an opportunity, building a transaction, submitting it, and reaching the Sequencer.

BlockRazor Robinhood Chain Sequencer Feed(Ultra) optimizes the receive side by helping nodes obtain new blocks earlier and more consistently. Transaction Sending optimizes the send side by helping signed transactions reach the official Sequencer faster. Together, they extend a point improvement into an end-to-end path from state update to transaction submission.

Low-latency infrastructure does not guarantee transaction success, a fixed ordering position, or strategy profitability. Outcomes still depend on strategy validity, transaction-construction time, network conditions, competing transactions, and onchain execution. When other conditions are comparable, however, earlier data and faster submission preserve a larger reaction window for latency-sensitive systems.

Access Robinhood Chain Transaction Sending

BlockRazor Robinhood Chain Transaction Sending supports the standard eth_sendRawTransaction method. If your team operates a sniping bot, copy-trading platform, quant-trading system, searcher, wallet, DEX, or another orderflow product, you can:

• Read the Transaction Sending integration documentation and configure the endpoint and credentials. Free transaction sending is currently supported, with a default TPS allowance of 1 Tx / 5s.
• Run an A/B test against the official endpoint, https://sequencer.mainnet.chain.robinhood.com, from your production environment.
• Combine the service with Sequencer Feed(Ultra) to measure end-to-end reaction time.

If you have questions during integration, contact BlockRazor on Discord for support.

Frequently asked questions

Can BlockRazor guarantee a specific block or Transaction Index?

No. BlockRazor optimizes the network path to the official Sequencer, improving the probability and consistency of landing in an earlier block or at a better Transaction Index. Final ordering still depends on the Robinhood Chain Sequencer, transaction validity, network conditions, and competing traffic.

How is total lead rate different from same-nonce inclusion rate?

Same-nonce inclusion makes the two routes compete for one executable nonce and shows which route's transaction enters Sequencer ordering first, but it cannot compare the final Transaction Index of both routes. Total lead rate uses two independent transactions that can both be included, then compares their block heights and Transaction Indexes to measure actual onchain position.

Why does Transaction Index matter to trading strategies?

Within one block, a lower Transaction Index means earlier execution. For strategies affected by price changes, state competition, or order precedence, an index difference can influence execution price, whether an opportunity remains available, and the final transaction outcome.

Should Sequencer Feed and Transaction Sending be used together?

They can be used independently, but together they cover more of the latency path. Sequencer Feed helps a system receive the latest state earlier, while Transaction Sending helps a completed signed transaction reach the Sequencer faster, reducing end-to-end reaction time from signal to submission.

Sources

• BlockRazor Robinhood Chain Transaction Sending documentation
• Original Robinhood Chain RPC benchmark
• BlockRazor Robinhood Chain Sequencer Feed documentation
• Robinhood Chain Sequencer Feed benchmark
• Robinhood Chain official ordering model
• Robinhood Chain official Sequencer endpoint
• Robinhood Chain official endpoint guidance