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How to Verify a Robinhood Chain RPC

Nock Terminal Editorial Team

Before pointing a wallet, bot or indexer at a Robinhood Chain RPC endpoint, verify it independently. A wrong RPC that returns valid-looking JSON for a different chain will let you sign transactions that do not do what you expect. Three quick checks catch almost every problem: eth_chainId, block height parity with Blockscout, and a trivial read against a known contract.

This is a developer-oriented reference. If you are a normal user setting up a wallet, follow the wallet setup checklist instead — the wallet's chain-ID readback handles most of the same job for you.

In this article, see also: Robinhood Chain RPC URL referencechain ID 4663 referencetransaction pending troubleshootinguse the block explorer.

What a silent failure looks like

The dangerous case is an RPC that responds normally but is either lagging significantly or, worst case, is serving a different chain. Your wallet accepts responses and signs, and only when the transaction never appears on Blockscout do you realise something is wrong. The three-check flow above catches both cases before you sign.

Public vs paid RPC

Robinhood's public RPC is documented as rate-limited and not intended for production. If your verification passes but you plan to run a bot, indexer or automated worker against it, expect to hit throttling and plan to move to a paid provider that supports chain 4663. We do not recommend a specific provider on this page.

Steps

  1. 1
    Call eth_chainId
    Send a JSON-RPC request: { jsonrpc: '2.0', method: 'eth_chainId', params: [], id: 1 } to the RPC URL. The response result must be 0x1237 (the hex encoding of 4663). Any other value means you are not on Robinhood Chain mainnet.
  2. 2
    Compare block height to Blockscout
    Call eth_blockNumber against the RPC and compare the result with the latest block height at https://robinhoodchain.blockscout.com. They should be within a small margin at any moment. A large gap means the RPC is lagging — usable for reads that tolerate lag, unsafe for anything time-sensitive.
  3. 3
    Read a known contract
    Call eth_getCode against a contract you know exists on chain 4663 (for example, a token address you can see on Blockscout). If the response is 0x, either the address does not exist on this chain or the RPC is not serving it.
  4. 4
    Repeat after any config change
    Repeat these checks after any wallet update, environment migration or credential rotation. A previously-verified RPC can silently start serving a different chain if the URL was mistyped during a change.

Frequently asked questions

How do I confirm an RPC is actually serving Robinhood Chain? Send an eth_chainId JSON-RPC request. It must return 0x1237 (hex for 4663). Any other value is not Robinhood Chain mainnet. What does 0x1237 mean? The hexadecimal encoding of the integer 4663 — Robinhood Chain's mainnet chain ID. How lagged is too lagged? Depends on your use case. For occasional wallet signing, a few blocks is fine. For sniping, indexing or bots, any material lag is disqualifying — use the tip of chain, not a lagging replica.

Send an eth_chainId JSON-RPC request. It must return 0x1237 (hex for 4663). Any other value is not Robinhood Chain mainnet.

Related

Sources checked

First-party pages used to write or verify the entries above. Vendor pages change frequently — treat each source as the authoritative reference for its own product, not this article.

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