The self-custodial banking core for neobanks

Launch a stablecoin app in weeks, not months. Convert new users and deposits with seamless UX. Orchestrate money movement across chains, tokens and currencies.

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Infrastructure that scales

$4B

transaction volume

4.7M

intents

1.8M

total wallet

A dozen hard problems before it's a product.

Onboarding new users whilst retaining self-custody, going multi-chain with great UX, creating deposit flows with high conversion, shipping global cards that spend — each a hard problem, each a new infra stack. A year of plumbing before you even ship the product.

Ship your product,
not the plumbing

Rhinestone is the foundation that solves these problems. One self-custodial tech stack at the core of everything your users do. Payments, cards, and fiat orchestration, wired together at the account layer.

Wallets

Embedded smart wallet, secured with biometrics and powered by smart accounts. Onboard new users with familiar auth sign-in flows. Never compromise on self-custody.

Deposit

A single deposit flow that converts, no matter the source of funds, asset type, or method.

Relaying

Optimise how money moves across chains, through token liquidity and through fiat based currencies. Fast and at global scale.

Fiat integrations

A multi-currrency bank account per wallet for your global audience. Close the gap between offchain and onchain money with stablecoin cards.

Trusted by teams building on the frontier

$2.7B

Total Value Locked

$1T

in value transferred

200K+

users

We built the standard
the industry runs on

Rhinestone's foundation is account abstraction. We defined the modular smart account movement and created ERC-7579 — the standard behind every major smart account and the default for fintechs building onchain.

Companies building on ERC-7579

Explore our smart wallet stack

Powering fintech in all forms

The same foundation runs at scale across exchanges, prediction markets, and onchain apps.

Sports & trading

Pred.app

Pred is the Fastest Sports Prediction Platform. Backed by Accel and Coinbase Ventures.

TBU

Users onboarded

agents

Zyfai

A yield agent for onchain wealth management, helping users and developers gain boosted yield by automating allocation and risk monitoring.

$3B

in transaction volume

decentralised protocol

ENS

ENS is DNS for wallets, turning blockchain addresses into readable names like alice.eth.

$500M

gross trading volume

Supported by Industry Leaders

Backed by top tier venture funds and category defining strategic investors. Battle-tested and audited by leading blockchain security firms.

Our investors

Our auditors

Spearbit

Session Keys Audit

Renascence

Session Keys Audit

Chainlight

Smart Account Audit

Ackee

Smart Account Audit

The next great fintechs
won't run on banking rails

Settle in seconds. Run 24/7 in every market. Program every flow.

Contact us

Get in touch for a 30-minute discovery call.