Top California Blockchain Startups (223)

Bitcoin is the best money. It should be used like it. We build and fund free, open-source projects aimed at making bitcoin the planet’s preferred currency.

Securitize is a global fintech, Top 50 blockchain company, with a mission to provide investors with access to invest in and trade alternative assets, and for companies to raise capital and offer shareholder's liquidity. Securitize has pioneered a fully digital, regulatory compliant, end-to-end platform for issuing, managing and trading digital asset securities (also known as security tokens), with over 200...

Halliday is a blockchain company and product lab working to create a unified, cross-chain payments ecosystem. Its flagship product, Halliday Payments, is a unified payments platform that makes it easy for users to onramp, swap, and take other onchain actions. Halliday’s products are built on the Workflow Protocol, which removes the need to code smart contracts by hand and enables...

Trust Wallet. A simple and secure mobile wallet for that supports 60+ blockchains and over 1 million assets. We provide a fully security audited system that makes it simple to store your cryptocurrency. Trust applications, designed for iOS and Android, provide the best possible experience and ease of use.

Sei Labs builds open sourced technology for the high-performance Sei Blockchain, the fastest Layer 1 blockchain designed to scale with the industry. The unique optimizations built into Sei enable Web3 applications to reach Web2 level scale and performance, driving the mass adoption of digital assets. The Sei Labs team is comprised of former Google, Goldman Sachs, Robinhood, Nvidia, and Databricks veterans...

Subzero Labs is the original contributor behind Rialo, the Real World Blockchain. Our team comprises experienced builders and researchers from leading organizations across blockchain infrastructure and hyper-growth products. Collectively, we have contributed to some of the most foundational projects in the ecosystem. Today, we are focused on designing a next-generation blockchain architecture that transcends incremental innovation.

The crypto world is changing—we’ve seen an explosion in innovation but a fragmentation of tools. Today, traders navigate a low visibility landscape, handling multiple chains, scattered data, and many marketplaces. Now, trading tooling has shifted towards consolidation. Users demand a simple solution that effortlessly weaves their favorite decision-making software and maximum liquidity into one elegant interface. Kinetic is developing a...

Sweatcoin is a health and fitness app that rewards users for their steps with a currency called Sweatcoin, which can be spent on rewards, donated to charity, or converted into $SWEAT.

Trojan builds client-centric trading tools which cater across the gamut, from new users to professional traders. Since launch, we’ve processed $30b in trading volume and attracted over 3 million users. Unique among competitors, our architecture is built from the ground-up to be the fastest and most accurate on the market. Trojan’s mission is to bring the centralized exchange trading experience, but...

At Backpack, we ship relentlessly to bring you products that make using crypto easy, rewarding, and enjoyable. We offer a globally regulated exchange with a strong focus on compliance and a self-custodial wallet and browser extension. With over 1 million users, we’re just getting started. We're hiring! --> jobs.backpack.app

PIP Labs is a research and engineering company focused on decentralized technologies, intellectual property (IP), and artificial intelligence (AI). As an initial core contributor to the Story Network, PIP Labs develops infrastructure and technical solutions that connect the potential of AI with sustainable ownership models, supporting IP holders, creators, and innovators.

Tempo is a purpose-built, layer 1 blockchain for payments, developed in partnership with leading fintechs and Fortune 500s. With support for all major stablecoins, Tempo enables high-throughput, low-cost global transactions for any business use case.

Eluvio is transforming the management, distribution, and economics of premium video for content owners. The Eluvio Content Fabric is a global platform service that enables just-in-time, low-latency content distribution, monetization, and asset servicing directly to consumers. Content is delivered directly from source as on-demand streams, live streams, and dynamic sequences–without the use of separate transcoding services, content delivery networks (CDNs),...

0G is the largest AI Layer 1 blockchain, purpose-built to power the future of decentralized AI. Its modular architecture separates data storage from data publishing, delivering unmatched scalability, with data throughput of 50 GB/second—50,000x faster and 100x cheaper than competitors. This makes 0G the foundation for high-performance AI applications, scalable L2s, and on-chain autonomous agents. By democratizing access to AI...

ZetaChain is building the first fully interoperable, decentralized, and universal blockchain — one universal chain to manage all chains. For those new to crypto: Think of ZetaChain as the “internet of blockchains.” Just like the internet connects websites and services so they can talk to each other, ZetaChain connects different blockchains — which are normally isolated — so apps and users...

Lightspark is the easiest, low-cost, most reliable, enterprise-grade way to send and receive payments globally, enabling money to move just like bits and bytes do on the Internet. We're delivering open payments for the Internet at scale, using the Lightning Network. We aim to help businesses around the world benefit from real time payments and build amazing new experiences for...

Goldsky gives developers the tools they need to build powerful Web3 dApps faster. Realtime blockchain indexing, instant subgraphs, and flexible data streaming pipelines make it easy to unlock the full potential of onchain data. Building accurate, realtime data infrastructure is hard. Goldsky streamlines complex engineering challenges so that developers can focus on what matters most — building transformational applications and...

Polychain invests in protocols and companies in the blockchain space, advancing the global adoption of cryptocurrencies.

Frustrations with filing crypto taxes It all started with trying to be compliant when reporting taxes on crypto gains, a nearly impossible task. Our founders envisioned a future where modern API-powered technology automates data ingestion, calculation, and required information and financial reporting. Enable digital assets for the global economy Blockchain, crypto, and tokenized assets are helping modernize financial infrastructure and money movement around...

It’s rare that a new asset class is born. Nevertheless, we’re witnessing exactly that with the rise of crypto. Over just the last few years, since Bitwise was founded, crypto has evolved from an embryonic $50B market to a growing $3T+ juggernaut. At Bitwise, we believe that crypto has reached a turning point, and is headed north of $10T over...