The self-custodial bank core for neobanks

Launch a stablecoin app in weeks, not 18 months. One integration wires in accounts, deposits, cards and money movement across chains, tokens and currencies.

Talk to us

Infrastructure that scales

$4B

total volume

4.7M

intents

1.8M

total users

A dozen hard problems before it's a product

User onboarding without compromising self-custody, multichain transactions, deposit flows that convert, global cards that spend, unified KYC management, onchain routing for DeFi and trading. Each a hard problem, each a new vendor. 18 months of plumbing before you ship the product.

Ship your product,
not the plumbing

One integration replaces the vendor stitch. A self-custodial stack at the core of everything your users do. Accounts, payments, cards and fiat rails, wired together at the account layer, live in weeks.

Wallets

An embedded passkey wallet with client-side key generation. No key server between you and the user, no vendor that can move funds or censor. Familiar sign-up flows such as OAuth, with gas abstraction and multichain flows built in.

Deposits

One hosted flow that turns signups into funded customers. Wallet, exchange, card, Apple Pay or bank transfer, settled as one token on one chain. And out is as easy as in, with hosted withdrawals.

Relaying

Gas sponsorship, crosschain execution and liquidity routing. SLA-backed settlement that reroutes and self-heals without the user in the loop.

Fiat integrations

Virtual bank accounts and stablecoin cards per wallet, in every currency you need. One KYC shared across licensed partners closes the fiat gap.

Trusted by teams building on the frontier

$2.7B

total value locked

$1T

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 the industry's biggest smart account wallets, with $30B+ of lifetime ecosystem volume.

Companies building on ERC-7579

Explore our wallet stack

Powering fintechs in all forms

The same foundation runs at scale across DeFi protocols, agentic platforms and onchain apps.

Decentralized finance

vaults.fyi

Discover and compare DeFi yield vaults across 80+ protocols, with real onchain APYs and risk scores in one place.

$100B+

TVL tracked

agents

Zyfai

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

$3B

transaction volume

decentralized 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.

Talk to us

Get in touch for a 30-minute discovery call.