The only private RPC provider

I thought web3 was private? Not a chance!

In web3, almost every transaction relies on infrastructure provided by closed-source, centralized infrastructure providers who you simply have to trust not to misuse your data. We’re talking about RPC providers like Infura/Alchemy, the engine that keeps the entire crypto rocket flying, supporting billions of RPC calls daily. But unlike the crypto system they support, they are highly centralized black boxes which are entirely closed source.

Want to find out what your crypto wallet exposes to all RPC providers?

Introducing RPCh

Chart comparing other RPC providers Centralization and Privacy vs RPCh.

Even if these providers are honest, it’s still a huge privacy and security risk to handle vital metadata like IP addresses in this way. RPCh plugs this leak by routing requests and responses via the HOPR network. Users running RPCh nodes can route requests through the HOPR mixnet and earn HOPR tokens for doing so. RPCh is the first commercial service built on top of HOPR and the first truly private RPC provider. RPCh integrates smoothly and simply with web3 services like wallets thanks to our SDK. Users won’t notice the difference, but everyone will benefit from the huge increase in privacy.

Diagram of HOPR’s solution to the existing metadata problem
  • • Learn how users will be able to use RPCh

  • • Understand how HOPR node runners will benefit

  • • See the first metadata-private crypto transactions ever

Technical implementation

With RPCh YOUR wallet can be more private than ever before. All of that is possible without changing any underlying logic of the wallet or blockchain. Our HOPR connector layer provides a simple drop-in replacement for the HTTP(S) connection of your current web3 provider in e.g. web3.js or ethers.js. In this way the user IP addresses remain private without much integration hassle.

RPCh Wallet Integrations (Demo)

At the Infinite Hackathon in Bogota this year, three wallets were integrated with RPCh. Block Wallet, Tally Ho! and Frame all let you use HOPR’s RPCh to completely obscure your metadata while using or even browsing web3 services. Watch the demos below to see each integration in action.

RPCh at ETH Privacy

Join us in Istanbul this April for our next wallet hackathon. You can register your project for a free wallet integration supported by senior HOPR and RPCh developers. As well as five days paid for in Istanbul to attend the hackathon. This includes food, beverages and hotel accommodation.

Logo of RPCh participation at ETH Privacy in Istanbul

Integrate RPCh now!

For developer support, information on running costs, or to hire a HOPR dev to integrate RPCh for you.

RPCh Guarantees:

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    Complete privacy

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    Seamless integration

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    Competitive pricing

What makes RPCh unique?

Two arrows blending represeting Packet Mixing

Packet Mixing

For complete metadata and data privacy.

A Decentralized Network graph

Decentralized Network

For a trustless and private solution.

A hand holding a HOPR token

Proof of relay

To securely incentivize node runners.

The combination of these 3 USPs creates a stronger privacy solution than TOR or any VPN.

1. Proof-of-Relay

HOPR’s unique proof-of-relay mechanism means every node runner is incentivized to correctly relay data in exchange for HOPR tokens. Anyone can run a HOPR node to earn HOPR tokens and contribute to online data privacy.

2. Decentralized Network

The HOPR network is a decentralized incentivized mixnet, ensuring complete data and metadata privacy for everyone who uses it. Data is sent via multiple hops, so no-one but the sender and receiver know the origin, destination, or content of a data transfer.

3. Packet Mixing

Each node combines multiple packets from different messages, occasionally delaying certain packets and adding them to future mixing cycles. These are transferred across the mixnet as indistinguishable bundles, separated and mixed at every node for complete privacy.

How we build RPCh

Every time we look under the hood of a web3 service, we find it’s leaking unacceptable amounts of data and metadata. Especially large public RPC providers who are reckless in their handling of billions of RPC calls daily. At HOPR, we knew we had to do something to address this massive privacy concern, which is why we built RPCh.

DERP – The dumb ethereum rpc provider

DERP replicates an RPC provider and displays your requests in real time, highlighting the privacy pitfalls of public RPC providers. Many of today’s DeFi services leak identifying metadata, even if you don’t make a transaction. This shows how vital a transport layer privacy solution like HOPR will be in building web3.

Designers, mentors and organizers of the Wallet UX Hackathon 2022.
Exposed transaction information can be exploited to frontrun NFT sales.

HOPR hosts ux hackathon in collaboration with Metamask

Clear and simple UX design is a fundamental part of bringing choices about privacy to users. At the first ever crypto UX hackathon, participants designed an implementation of the HOPR protocol as a Snap within the MetaMask wallet. These designs were used to inform implementation decisions for later hackathons and internal development of RPCh.

Designers, mentors and organizers of the Wallet UX Hackathon 2022.

First RPCh implementation during the Infinite Hackathon, Bogotá, Colombia

At the Infinite Hackathon , we challenged hackers to integrate RPCh with live crypto wallets of their choice. This was the first attempt to implement RPCh and was a resounding success with three seamless integrations: Block Wallet, Tally Ho! and Frame.

The three hackers responsible for our first ever RPCh integration.
The three hackers responsible for our first ever RPCh integration.

RPCh goes live!

We have officially launched RPCh and dedicated a new sub-team within HOPR to its future development and integration. This commitment comes with exciting developments, from follow-up events to new partnerships. Keep an eye out, as the coming months will be eventful for both HOPR and RPCh!

Logo of RPCh over a blue gradient background


What does RPCh solve?

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Ethereum RPC providers can see IP addresses and other metadata of Ethereum users. That is a liability for users, wallets and RPC providers alike.

What is RPCh?

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An RPC provider that works exclusively via the HORP network and is thus fully metadata private on the transport layer.

How does RPCh work?

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RPCh uses the following features to serve as a completely private RPC provider:

  • 1. Thin wallet connector to relay RPC requests & responses via the HOPR network instead of HTTP(S).

  • 2. HOPR exit node connector to relay RPC requests & responses to/from a standard Ethereum RPC endpoint (e.g. an Ethereum execution layer client).

  • 3. Out-of-the-box ability to verify the integrity of RPC responses.

  • 4. Highly scalable, available & performant Ethereum node infrastructure that is used by RPCh clients.

How do wallets & dApps use RPCh?

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Where can I view previous wallet integrations?

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- 0xFrame:

- TallyHo:

- BlockWallet:

How much does Integration cost?

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The integration & usage for every crypto wallet of RPCh is easy and seamless. Our team will support the integration with the standard SDK. It’s as simple as exchanging your current RPC provider with any other RPC provider. Integration is free. Monthly costs depend on your usage. Prices are competitive.

What is the difference between RPCh and HOPR?

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RPCh is a product made possible by building on top of the HOPR protocol.

What is the HOPR network?

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The HOPR network is the (not so) secret sauce that makes RPCh metadata private. HOPR is an incentivized mixnet that is much more private than a VPN or even Tor. Thanks to its proof-of-relay mechanisms, the mixnode operators get paid for forwarding packets in the decentralized HOPR network and thus provide privacy for both senders and receivers. ->