Investing in Halliday
The experience of building on blockchains is often more comparable to designing hardware than writing software. Developers spend months building meticulously auditing before “taping out” a smart contract etched in stone. Upgrades demand large-scale coordination and manual migrations, leading to slow iteration cycles and minimal flexibility to swap in new components on the fly.
Halliday changes that. We’re leading Halliday’s Series A round, and also led their Seed round, to back their vision for a new “software era” of web3 development. Halliday’s Workflow Protocol abstracts away the low-level plumbing—spanning multiple chains, bridges, and complex orchestrations—so developers can rapidly adapt onchain logic without redeploying contracts at every turn. This shift brings guaranteed fault tolerance to multi-hop workflows and allows entire sequences of transactions to be executed in a single call, letting developers iterate as freely as in web2 development.
Halliday’s initial product, Halliday Payments, demonstrates the model in action. Its single, flexible interface links onchain commerce with any payment method—credit cards, ACH, or tokens from any chain—and automatically routes them to the right destination. No more bridging friction or manual token swaps. Users get one-click simplicity, while developers retain full freedom to evolve the underlying flows without deploying new contracts.
We believe this could be one of the biggest unlocks for web3 since programmable ledgers. As we approach an internet of agents, Halliday’s Workflow Protocol provides the critical infrastructure for AI to call on web3 smart contracts with the same reliability and safety as web2 API requests. This combination of trusted execution and on-demand composability paves the way for decentralized infrastructure to keep pace with developments in AI.
We first met founder Griffin Dunaif over three years ago, when he was still a junior at Stanford. We immediately recognized his incredible technical talent, and are now seeing that he’s also dogged at sales, nimble in his pursuit of the right product, and a visionary at identifying the right abstractions for users, developers, and integrators.
We’re excited to back the team as they help web3 graduate from hardware-paced development and accelerate at the pace of software.
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