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CompaniesBlockchain

Blockchain payments company Halliday raises $20 million from Andreessen Horowitz

By
Catherine McGrath
Catherine McGrath
Crypto Fellow
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March 18, 2025, 9:00 AM ET
Halliday raises $20 million from Andreessen Horowitz in a Series A
Halliday raises $20 million from Andreessen Horowitz in a Series ACourtesy of Halliday

Halliday, a startup that helps financial institutions automate services with blockchain and AI technology, has raised $20 million from venture capital giant Andreessen Horowitz.

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The company works with charter banks, payment service providers and other financial institutions that are interested in blockchain technology to help accelerate their entrance into the space by making it easier to design financial workflows, CEO and co-founder of Halliday Griffin Dunaif told Fortune. 

Financial workflows—an organized sequence of steps required to move funds from one place to another—are integral to any company that handles money for their clients. In the crypto world, establishing these workflows requires engineers to program smart contracts, which can be a slow and arduous process, Dunaif said. 

With Halliday’s Agentic Workflow Protocol, companies can easily connect services like verifying a transaction or issuing a payment, into one cohesive workflow. “It’s an engine that lets you stitch together services into workflows so that they can be automated,” Dunaif said. 

Additionally, developers can implement agentic AI—a type of AI model that can solve problems and execute actions with limited supervision—within their workflows to automate decision-making. “We want to bring blockchain up to the agentic era, because no software will not be agentic as these technologies mature,” he said. 

The San Francisco-based company is currently taking submissions for its early access program that will be rolled out during the second quarter. Since announcing the program in late February, Dunaif says the company has received over 11,000 requests to access the product. 

Other crypto companies also work with financial institutions to make their payment systems more efficient. Consensys, a blockchain company founded in 2014, has a product called the CodeFi Blockchain Application Suite, which includes a service that helps financial institutions automate workflows. 

Once Agentic Workflow Protocol is fully available, Halliday will make money from it by charging customers based on how much computing power their workflow requires. 

The company declined to disclose its valuation in its latest funding round. It plans to use the money raised to accelerate deployment of the product and expand the team. 

Other investors in this latest round included Avalanche Blizzard Fund, Credibly Neutral, and Alt Layer. Halliday previously raised $6 million from Andreessen Horowitz in 2022.

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By Catherine McGrathCrypto Fellow
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Catherine McGrath is a crypto fellow at Fortune.

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