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RPC you can verify.

Most providers ask you to trust one node. CrossCheck answers from our own bare metal, then checks that answer against an independent public source, and returns only what they agree on.

Accounts are provisioned for enterprise customers.

Response shapePOST /ethereum-mainnet/<key>?crosscheck=1 · eth_getBlockByNumber

artifact-eth-01Artifact node, own metal9f2c…a41ematched
artifact-eth-02Artifact node, own metal9f2c…a41ematched
publicnodeIndependent public reference9f2c…a41ematched
Agreed 3 of 3214 ms

Two of the three sources are ours. The third is not. We serve from hardware we own and configure, then verify against an endpoint we do not control, so agreement is never self-certified.

50B+RPC requests / month
100+Blockchains
26Bare metal locations
AICPA SOC for Service OrganizationsSOC 2 certifiedAudited operator

Figures are Artifact Systems platform totals. Connect to any blockchain at any speed, with fixed costs.

How CrossCheck works

One source is a guess. Agreement is a measurement.

Add one parameter to a normal RPC call. The gateway does the rest, and you get back a clean JSON-RPC response.

01

Fan out

The call goes to every healthy Artifact node in the pool, plus an independent public reference for that chain. Drained and unhealthy nodes are already excluded.

02

Canonicalise and hash

Each response is normalised, so honest nodes running different software are not counted as disagreeing, then hashed and grouped.

03

Return the majority

You get the answer the majority produced. Every disagreement is recorded against the source that produced it.

errors abstainAn error is a node saying it cannot serve the request, not a fact about chain state. Errors never vote, so one failing node cannot manufacture a dispute.
-32050No majority. Fails closed rather than guessing, because a plurality is not a majority.
-32051Fewer than two sources answered. Verifying against a single source would be a lie, so we refuse instead.

Everything you expect from a gateway, and the part nobody else ships.

JSON-RPC proxy

Single and batch calls, load balanced across healthy upstreams.

REST and LCD

Path forwarding for Cosmos, Aptos, Arweave and Stellar Soroban.

WebSocket subscriptions

Live subscriptions on the same API key.

Only here

CrossCheck verification

Opt in per request. Our nodes answer, an endpoint we do not control checks them.

Full Archive

Genesis to current state, as an option on any supported chain.

Indexed data API

GraphQL and REST over indexed chain data, with OpenAPI docs.

API keys and IP whitelisting

Per-key limits, per-key scoping, per-key usage.

Usage metering

Compute units by method, by key, over time.

Including the ones other providers will not carry.

We specialize in providing RPC for blockchains that mainstream commercial RPC providers do not support, including early testnets with private or closed validator sets. Our optional Full Archive service allows you access to the entire history of a blockchain from the initial genesis block up to the current state.

Bitcoin
Ethereum
Solana
Base
Arbitrum
Polygon
Optimism
Avalanche
Aptos
Sui
Celestia
Cosmos Hub

A selection. Over 100 chains are available across the Artifact Systems fleet.

Security and compliance

Operated by Artifact Systems. SOC 2 certified.

CrossCheck runs on Artifact's own nodes, in Artifact's own racks, under the same controls as the rest of the platform. Nothing here is rented from a cloud provider.

  • Artifact engages third parties to perform regular security audits, vulnerability assessments, and cybersecurity penetration tests.
  • Only select Artifact staff have access to our secure server cabinets, and all of our network traffic runs through fully redundant hardware firewalls that we directly control.
  • Unlike most Web3 infrastructure companies, Artifact owns, configures, and upgrades all its hardware in several Tier III colocation facilities globally.
  • Production hardware and systems are mirrored across multiple geographic regions.
  • We utilize real time system monitoring coupled with 24/7/365 on call alerting.
AICPA SOC for Service Organizations

SOC 2 certified

Independently audited controls across security, availability and confidentiality.

aicpa.org/soc4so

Who it is for

Our clients are critical to the Web3 ecosystem and include blockchain foundations, digital asset custodians, crypto banks, exchanges, high-frequency trading groups, and liquidity providers.

Multi-tenant and private RPC solutions with custom rate limits and full archive access.

Verify your first call in a few minutes.

Accounts are provisioned for enterprise customers.