Web3 Developer Halliday Secures $20 Million in Series A Funding Led by a16z Crypto
Halliday, a rising star in the web3 space, has raised $20 million in a Series A funding round led by a16z crypto, the cryptocurrency arm of venture capital giant Andreessen Horowitz. The investment, announced on March 18, 2025, brings the workflow protocol developer’s total funding to $26 million, signaling strong confidence in its mission to simplify smart contract creation.
Joining a16z crypto in the funding round are Avalanche Blizzard Fund, Credibly Neutral, Alt Layer, and a group of angel investors, according to a statement shared with The Block. Halliday’s innovative approach focuses on building infrastructure that allows developers to delegate complex workflows to autonomous systems, making the process of creating smart contracts faster and more accessible.
Smart contracts—self-executing agreements powered by blockchain technology—are a cornerstone of decentralized applications, or “onchain apps.” However, crafting them can be time-consuming and technical. Halliday aims to change that by streamlining the process, enabling developers to build these applications more efficiently.
“This funding marks an exciting step forward for us,” said Griffin Dunaif, CEO of Halliday, in an interview with The Block. “Our vision is to usher in the software era of blockchain, where developers can create applications in hours instead of years. With these funds, we’re accelerating that goal and pioneering the use of safe AI systems on decentralized networks.”
The company, which currently employs 17 people, plans to use the fresh capital to expand its team—particularly by hiring more engineers—and further develop its workflow protocol. Halliday is also working on a payments application called Halliday Payments, which could broaden its reach in the blockchain ecosystem.
Since its inception, Halliday has positioned itself as a game-changer for developers navigating the complexities of web3, a term describing the next generation of the internet powered by decentralized technologies. By reducing the time and expertise needed to build smart contracts, the company hopes to empower a new wave of innovation in blockchain-based applications.
With $26 million now in its coffers and backing from prominent investors, Halliday is well-equipped to pursue its ambitious roadmap. As the web3 space continues to evolve, all eyes will be on how the company delivers on its promise to transform how developers work with blockchain technology.