Y Combinator

Payments & Loyalty Infrastructure

All-in-one observability platform for Web3 applications powered by machine learning.

atsuma is a developer tool for building applications on top of real-time blockchain data.

Striga is building infrastructure for digital assets and financial services as a single set of APIs doing the heavy lifting of security and regulatory compliance.

DolarApp allows LatAm inhabitants (starting with México) to dollarize their everyday finances.

Get free RPC services and developer tools

A crypto-native virtual card provider that allows users to easily create cards and fund them with cryptocurrency.

[Inactive] API to measure and eliminate carbon emissions.

Cashmere is a multisig solana wallet for enterprises to manage their digital assets.

Poko enables seamless transfers from local payment rails to web3 infrastructure enabling web3 wallets, marketplaces, games and DApps

Helicarrier (previously Buycoins) is building cryptocurrency infrastructure for Africa.

Scandinavian investment app for genz

Financial advisors for Gen-Z

Tools for institutions to manage risk in DeFi

ECSA offers a seamless solution for converting Brazilian Real to BRLe, a fully collateralized stablecoin.

Meson is a stablecoin swap protocol among blockchains and Layer 2s

Create self-custody wallets for your users, powered by account abstraction. ERC-4337 infrastructure.

Maindrop is a fun and easy way to create and send NFTs.

Theya is the world’s simplest Bitcoin self-custody app for users who find crypto exchanges risky and hardware wallets overwhelming.

Tienda Dólar is the best way for Latin American people to protect their savings

Hypeshot helps creators monetize their superfans through livestreams and NFTs.

The world’s most trusted and inclusive peer-to-peer NFT marketplace.

sFOX is the full-service crypto prime dealer for institutional investors, providing the liquidity, security, and infrastructure needed to unlock the full potential of digital assets.

[Acquired] Dharma is the only Ethereum wallet capable of seamlessly moving money between any US bank account and decentralized exchanges like Uniswap.

Multi-chain crypto wallet with a crypto debit card

ZeFi is a zk native cloud platform that lets developers build and deploy zero knowledge circuits directly on the cloud.

SimpleHash allows developers to query all NFT data from a single platform.

Blockscope is a Web3 data platform that enables anyone interested in on-chain data to quickly spin up live or historical data pipelines

We create an affordable way for gamers to start playing crypto games and a secure way for investors to earn yield through NFTs.

A blockchain intelligence company that helps financial institutions, crypto businesses and government agencies detect and investigate crypto-related financial crime and fraud.

Building tools and products in the crypto industry.

Send, spend, save, and earn money via stablecoins.

Members.Land helps creators and organizations to streamline their membership launching and community management processes.

Supercool allows institutions and developers to automate, create, and manage digital assets.

A platform for brands and creator to monetize their video entertainment more efficiently, build an engaged community and reward their fans.

Filta is the face filter NFT marketplace being built by veterans from Pixar/Oculus/Facebook.

Quantstamp’s mission is to secure the decentralized internet, and has protected over $200B in digital asset risk from hackers.

NuCypher is a decentralized threshold cryptography network.

Rainbow is a fun, simple, and secure Ethereum wallet that makes managing your assets a joy.

Tools for the future of pseudonymous, permissionless work. It provides an efficient tool for creating and managing grants from your protocol, completely on chain..

Winter offers an embeddable checkout widget for businesses & NFT projects to sell NFTs through a credit card

A collaborative team workspace with Sign-in with Ethereum and token-based permissions. Write docs, manage projects, and organize knowledge with bidirectional links.

Jasmine makes the buying and selling of renewable energy assets easy, accessible, and transparent.

Worldcoin for Ethereum blockchains.

Web3 smart messaging protocol for dapp notifications and wallet chat

Empower people to participate in a more open financial system It starts with helping people save & invest in Bitcoin, effortlessly.

We make enterprise software for crypto.

[Inactive] Slashauth builds a developer platform for web3 enabled apps.

By investing on a schedule and selling available gains when you spend, Soon automates investing from beginning to end.

Coinrule Catches the Next Market Opportunity on Your Behalf by Automating Your Investments.

Interlock protects DeFi while rewarding the community that makes it safer.

A decentralized finance platform creating end-to-end financial derivatives on blockchains.

Ping enables international contractors and freelancers to have access to a personal Dollar account in the US

Weltio gives users access to a fully fledged brokerage account in USD

A fiat<>crypto on/off ramp payment gateway for web3 applications.

Littio is a neobank focused on solving the currency devaluation problem for Latin Americans.

Map3 connects crypto services to Wallets, Exchanges & Bridges to enable cross-chain deposits.

Unlock your trading superpowers wtih HyperTrader.

Metafi is building blockchain infrastructure for Web3 games.

Zoltar is an agnostic payment infrastructure for international businesses.

All-in-one Platform to Manage Your Crypto Treasury

Chainsight builds API for any web2 or web3 company to detect and prevent crypto or NFT scam on their platform

Ben aims to be a unified platform for learning about, buying, selling, and storing cryptocurrency.

Request allows companies & people to pay and get paid in cryptocurrencies by relying on the most innovative payment request technology.

We are building Flux- Flux is a Mobile App for merchants, freelancers, regular users(P2P) to make and accept payments from their customers anywhere in the world using crypto or fiat.

USD mobile banking for LatAm's businesses and people

Effortlessly develop your Web3 applications by leveraging our elastic APIs,powerful analytics and knowledge base articles to your competitive advantage.

A blockchain empowered alternative to Firebase. Cedalio starts with a Decentralized Storage GraphQL Gateway, you can use Cedalio as a decentralized database for applications that speak GraphQL.

A mobile and wearable wallet that makes interacting with blockchain-based products and services seamless, fun, and empowering.

Hiro System builds developer tools for Bitcoin L1 and the Stacks L2 (layer-2).

SolStar makes it possible for anyone to use crypto, starting with a Discord integration. It's a platform for creating and organizing token-powered communities powered by Solana.

Notabene helps businesses perform crypto transactions in a regulatory compliant way.

A leakproof data warehouse that lets companies store and analyze sensitive data without ever decrypting it. Developers can create S3-like buckets. Store any key-value data. Then perform completely private retrievals.

Listia is a new kind of auction marketplace for giving and getting free stuff.

Protocol Labs is an open-source research, development, and deployment laboratory. It's the company behind IPFS, Filecoin, libp2p, and many more.

A portfolio assistant for cryptocurrency used by over 1 million cryptocurrency holders with over $50 Billion in crypto assets on exchanges.

tools and infrastructure that make it easier, faster and cheaper for anyone in to build user friendly crypto and web3 products.

Terrace is a regulatory-compliant, all-in-one institutional-grade trading UI / terminal and infrastructure layer

Hedgehog is a crypto robo-adviser that manages your funds in broad baskets of digital assets covering up to 85% of crypto's market cap.

A digital currency wallet and platform where merchants and consumers can transact with new digital currencies like bitcoin, ethereum, and litecoin.

Rio lets users buy and sell crypto and stablecoins in 5 minutes or less, using local payment methods in LATAM.

Bunkyr enables companies to protect their users’ data with a simple, hardware-secured API.

Crypto-native group messaging

Decent has a full suite of no- and low-code tools for creators and organizations to easily build customized and user-friendly projects on the blockchain.

Wallbit is a neobank that gives global remote workers a US bank account.

RoverX is a NFT alerts and notifications tool for mobile.

Coinfeeds is an API that provides real-time news and social sentiment on any cryptocurrency.

Easily generate reports from on-chain data

Mudrex is on a mission to bring risk optimised high yield investments to everyone.

Provide simple, well-documented, and fully compliant payments APIs and interfaces for Latam.

Minecraft meets Discord

Create a cryptocurrency for your community.

At Algofi, we're building the new financial system. Our work will reduce barriers to entry and promote democracy in the financial system.

UpBanx is Brex for D2C brands and content creators in Indonesia.

SpruceID empowers organizations to manage the entire lifecycle of digital credentials, such as mobile driver’s licenses, software audit statements, professional certifications, and more.

We build accounting & treasury management software solutions for web3 organizations.

WalletKit is a developer platform that abstracts away the complexities of blockchain tech and provides simple HTTP APIs.

Stackup is a suite of open-source developer tools for building user-friendly blockchain products. It starts with ERC-4337 infrastructure.

[Inactive] Tinker is a cryptocurrency electronic trading & market making firm

Powerful web3 analytics tools to help you convert, engage, and retain more users. Multibase makes it easy to analyze web3 users.

Botin a mobile app where people in Latin America can invest in US Stocks, Crypto and more.

Immuna platform helps crypto investors manage their risks of investing in crypto assets.

Paymobil is a global bank account replacement using stablecoins.

Solve the Web3 identity problem by using Zero-Knowledge to provide both anonymous proof-of-humanity and credential aggregation.

Yatima is a verifiable computing platform which uses formal proofs and zkSNARKs to make software safer.

Lofty helps anyone lay a path to financial freedom with fractional real estate investing.