Cyclops.io Raises $8M Seed Round Led by Castle Island Ventures to Build Stablecoin Payments Infrastructure Platform

Cyclops.io, a payments-focused stablecoin infrastructure startup building tools that allow payment service providers to integrate crypto settlement and digital asset capabilities, has raised an $8 million seed funding round as it moves to scale its platform for global payments companies.

The round was led by Castle Island Ventures, with participation from F-Prime Capital and Shift4 Payments, marking a strong institutional vote of confidence in the company’s vision to simplify stablecoin adoption across the payments industry.

Cyclops is building what it describes as an all-in-one infrastructure layer that enables payment service providers (PSPs), merchant acquirers, and processors to offer stablecoin settlement, crypto payments, and digital asset payouts without becoming crypto-native companies themselves. The platform is designed to replace the fragmented approach that typically requires multiple vendors, custom integrations, and specialized blockchain engineering teams.

At its core, Cyclops provides the technical “plumbing” for payments companies to integrate stablecoin rails into existing merchant systems. This includes capabilities such as 24/7 settlement, crypto pay-ins, payouts, conversion, and reconciliation tools tailored specifically for enterprise-grade payment workflows. The company positions itself as a purpose-built infrastructure layer rather than a consumer-facing crypto product, focusing entirely on enabling incumbents in the payments ecosystem.

The startup was founded by repeat entrepreneurs Alex Wilson, Pat Duffy, and David Johnson, who previously built The Giving Block, a crypto donation platform later acquired by Shift4. After the acquisition, the team spent several years working within a large payments organization building crypto and stablecoin solutions internally. That experience, according to the founders, revealed how complex and inefficient it was for payment companies to launch digital asset features using existing infrastructure stacks.

Cyclops was created to eliminate that complexity by offering a single integrated platform rather than requiring companies to stitch together multiple blockchain vendors, compliance providers, and settlement systems. The company argues that while demand from merchants and consumers for stablecoin payments has increased significantly, the infrastructure required to support it has lagged behind.

The investor mix reflects this thesis. Castle Island Ventures, a crypto-focused venture firm, brings deep expertise in blockchain infrastructure, while F-Prime Capital, the venture arm of Fidelity Investments, signals growing interest from traditional financial institutions in stablecoin-enabled payments. Strategic participation from Shift4 Payments, a major global payment processor, further underscores the alignment between Cyclops’ infrastructure and real-world payments use cases.

Cyclops is already working with early customers in the payments ecosystem, helping them enable crypto settlement workflows and stablecoin-based merchant services. The platform is designed to reduce integration time significantly compared to traditional approaches, allowing payment providers to launch digital asset capabilities without building internal blockchain engineering teams.

The broader context for Cyclops’ growth is the accelerating adoption of stablecoins in global payments. As regulatory clarity improves in key markets and transaction demand increases across borders, payment companies are increasingly exploring stablecoin rails as a way to improve settlement speed, reduce costs, and expand merchant offerings.

With the new funding, Cyclops plans to expand its engineering team, strengthen compliance and regulatory tooling, and deepen integrations with payment processors and merchant platforms. The company is also expected to scale its commercial rollout as it positions itself as a foundational infrastructure provider in the emerging stablecoin payments stack.

Cyclops’ long-term ambition is to become the default platform that payment companies use when enabling crypto and stablecoin capabilities—effectively acting as the middleware layer between traditional financial systems and blockchain-based settlement networks.