Blocks stream
Typed blocks with the Arbitrum fields other providers drop.
rhrpc.v1.ChainStream/StreamBlocksWhat it carries
Block headers carrying l1BlockNumber, sendCount and sendRoot alongside the standard fields. On Nitro, extraData equals sendRoot and mixHash encodes sendCount and l1BlockNumber — surfacing them properly avoids a class of misinterpretation.
Key fields
Delivery semantics
Backfill and live through one stream. Resumable by cursor.
Volume: Roughly ten per second at a 100 ms block time. Every record carries a dedup_key and a monotonic sequence, so at-least-once delivery is deterministic to deduplicate.
Server-side filters
- block range
- include_unconfirmed
Filters are evaluated before bytes leave us, so a narrow subscription costs you nothing in bandwidth or parse time.
Subscribe
import { RobinhoodRPC } from "@robinhoodrpc/sdk"; const client = new RobinhoodRPC({ apiKey: process.env.RHRPC_KEY! }); // Backfill then live: omit toBlock to tail indefinitely.for await (const msg of client.blocks.stream({ fromBlock: 4_200_000,})) { handle(msg);}Sample message
{ "number": 4512889, "hash": "0x41bb…", "timestamp": "2026-08-27T14:22:09.118Z", "l1_block_number": 21884412, "send_count": "88214", "send_root": "0x9ac2…", "confirmation_state": "CONFIRMATION_STATE_INCLUDED"}Correctness notes
Prices in this stream are already multiplier-adjusted where the field says so. Robinhood’s own REST endpoint returns raw underlying values and Chainlink’s feed returns multiplier-adjusted ones; mixing them without applying the multiplier — or applying it twice — is the most common source of silent error on this chain.
The full set of rules is published at /docs/equities/correctness-rules.