Top San Francisco, California Blockchain Companies (181)

Mastercard powers economies and empowers people in 200+ countries and territories worldwide. Together with our customers, we’re building a resilient economy where everyone can prosper. We support a wide range of digital payments choices, making transactions secure, simple, smart and accessible. Our technology and innovation, partnerships and networks combine to deliver a unique set of products and services that help...

Block, Inc. is a global technology company with a focus on financial services. Made up of Square, Cash App, Afterpay, TIDAL, Bitkey, and Proto, Block, Inc. builds technology to increase access to the global economy. Each of our brands unlocks different aspects of the economy for more people. Square makes commerce and financial services accessible to sellers. Cash App is the...

Initially built to take the pain out of peer-to-peer payments, Cash App has gone from a simple product with a single purpose to a dynamic app, bringing a better way to send, spend, invest, borrow and save to our millions of monthly active users. With a mission to redefine the world's relationship with money by making it more relatable, instantly...

Alchemy powers the top blockchain companies globally and has been featured in TechCrunch, Forbes, Bloomberg, and elsewhere. Our mission is to bring web3 to a billion people, by providing builders with the tools they need to build exceptional onchain products. Alchemy is the only complete developer platform that offers the powerful APIs, SDKs, and tools necessary to build and scale onchain...

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.

Nium is an advanced payments platform redefining the way consumers and businesses send, spend, and receive funds across borders. Nium’s goal is to make the movement of money seamless through being a universal plug for financial services. The company uses agile, elegant, and modular solutions for complex business problems. Be it an Individual, new-age digital bank, or a traditional industry...

Megaphone helps you grow your onchain community's GDP. With Megaphone, you can launch tokens and NFTs, collect form responses, analyze onchain reputation and identity, and incentivize quality community actions. We've processed 68M campaign activity completions, 5.5M form responses, and hundreds of thousands of onchain transactions with iconic brands like Coinbase, Forbes, OneFootball, Pudgy Penguins. Talk to us to learn about the secrets of...

Paystand's on a mission to create a more open financial system, starting with B2B payments. Using blockchain and cloud technology, we pioneered Payments-as-a-Service to digitize and automate the entire cash lifecycle. Our software makes it possible to digitize receivables, automate processing, reduce time-to-cash, eliminate transaction fees, and enable new revenue.

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...

Braintrust is the first decentralized Web3 talent network that connects skilled, vetted knowledge workers with the world’s leading companies. The community that relies on Braintrust to find work are the same people who own and build it, ensuring the network always serves the needs of its users, instead of a centrally-controlled corporation. And because the community of knowledge workers and...

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

About the Stellar Development Foundation The Stellar Development Foundation (SDF) is a non-profit organization focused on working with and supporting changemakers to create equitable access to the global financial system through blockchain technology. SDF provides grants, investments, funding, and other awards to builders and organizations. SDF also develops resources and tooling on the Stellar network to help unlock real world utility....

Ripple provides one frictionless experience to send money globally using the power of blockchain technology. By joining Ripple’s growing global network, financial institutions can process their customers’ payments anywhere in the world instantly, reliably and cost-effectively. Banks and payment providers can use the digital asset XRP to further reduce their costs and access new markets. Founded in 2012, Ripple's vision...

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.

Build and run custom agents across your IDE, terminal, and CI

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...

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...

The first and most experienced company in bitcoin payments, BitPay builds powerful tools for spending, accepting, and building with bitcoin. The company has offices in North America, Europe, and South America and has raised over $70 million from top investors including Index Ventures, Aquiline Technology Growth, Menlo Ventures, Founders Fund, and Sir Richard Branson.

Gauntlet’s mission is to drive understanding and participation in the financial systems of the future. Building decentralized systems creates new challenges for protocol developers, smart contract developers, and asset holders that are not seen in traditional development and investing. Gauntlet has created a blockchain simulation and testing platform that leverages battle tested techniques from other industries to build financial models...

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...