Side Door Ventures
44 Montgomery St, San Francisco, CA, 94104, United States
Overview
Side Door Ventures is a global venture capital firm investing in audacious founders building the future at the fringe. We’re generalist investors and back teams across software, life sciences, space, frontier tech, blockchain, gaming, and financial services that aim to transform industries and improve lives. The Future Starts at the Fringe.
- Total investments
- 26
- Lead investments
- 3
- Investments · 12mo
- 6
- Active investors
- 1
Sector focus
- Financial Services
Investment portfolio
- Datahive AI
Participated · Seed · Aug 2026
Datahive AI operates a DePIN-style product that runs on users' phones, turning idle devices into workers that collect public web content such as product pages, reviews, and videos. The company emphasizes privacy, stating it does not collect browser histories, passwords, or private searches and that even the Datahive team cannot trace activity back to individual users. It further describes a security model that shards user-contributed data into tiny fragments distributed across thousands of devices so no single piece is meaningful on its own. Users earn points for participation, and those points can be converted into crypto rewards. Public reporting highlights the company's positioning in the privacy-first and web3 spaces. The company announced a $3.5M Seed raise from several web3 and tech investors.
- Tria
Participated · Equity · Jan 2026
Tria operates a next-generation, on-chain neo-bank that lets users spend, trade and earn yield while retaining self-custody of their assets. Its proprietary BestPath payment infrastructure, developed over the past two years, is already integrated with more than 60 leading protocols including Polygon, Arbitrum and Sentient. Since launching just four months ago, the platform has processed over US$100 million in cumulative transaction volume, attracted more than 150,000 active users and built a 10,000-member global ambassador program. Annual recurring revenue has surpassed US$20 million, and the company has distributed more than US$1 million in community rewards. Users in 150+ countries can access a Visa-branded card that offers 6 % cashback and zero transaction fees, contributing to what the article calls the fastest growth trajectory among Web3 neo-banks. In the first half of this year, Tria plans to roll out institutional services, introduce futures trading, travel payments, prediction markets and fiat on/off-ramp functionality. The roadmap also includes delta-neutral yield products for retail investors, AI-powered financial agents and private on-chain banking features. Management is targeting US$1 billion in cumulative transaction volume and US$100 million in annual revenue by year-end.
- DeepNode
Led · Equity · Dec 2025
DeepNode is creating a blockchain-based “open intelligence” network where AI developers, compute providers, and validators collaborate and retain intellectual-property ownership while earning rewards tied to real-world model performance. The platform positions itself as a multi-tool capable of handling any predictive or decision-making task, from healthcare diagnostics to fraud detection and crypto trading. Its novel Proof-of-Work Relevance (PoWR) mechanism scores and compensates models based on utility rather than raw computation. Built on Base, an Ethereum Layer-2, the network targets sub-$0.01 transaction fees and plans to launch its mainnet by the end of Q1 2026. DeepNode has already secured $5 million in funding—a $2 million seed round at a $25 million valuation followed by a $3 million strategic round at a $75 million valuation. The seed financing was community-driven, featuring validators like WildSageLabs (RoundTable21) and Rizzo (DNA) alongside infrastructure partner Gateway.FM. The strategic round brought in Web3 and AI infrastructure specialists such as Blockchain Founders Fund, Side Door Ventures, TBV, IOBC Capital, Fomo Ventures, and Nestoris. These resources will fund the multi-year roadmap to scale the network across multiple industry verticals and accelerate the mainnet launch.
- Scorbit
Participated · Seed · Nov 2025
Scorbit operates a platform that connects vintage, offline and modern arcade machines to the internet, enabling real-time scoring, competition, payments, and community features through its mobile app and cloud software. The company is also developing the Scorbit Console, a B2B hardware and software solution aimed at arcade venues and other locations that host machines. Seed-stage beta tests are already live and providing early market validation, though no specific revenue or user numbers were disclosed. With the newly raised capital, Scorbit plans to expand its team, finalize its minimum viable product, and invest in R&D for both new hardware and expanded app capabilities covering payments, competitions, and global gameplay support. Co-founded by serial entrepreneurs Jay Adelson and Ron Richards, the Ann Arbor–based startup intends to pursue a Series A round in 2026 to fuel partnership expansion and nationwide scale.
- Dominion Dynamics
Participated · Seed · Oct 2025
Dominion Dynamics is developing an Autonomous Collaborative Platform and a delta-wing autonomous combat aircraft, internally named "Scout," intended to operate alongside Royal Canadian Air Force F-35A fighters on Arctic missions. The Scout is designed to carry heavy weapons payloads and to operate over thousands of miles using satellite communications. The company aims to complete a subscale prototype within 18 months and is moving into a 35,000-square-foot facility near Ottawa on 1 June to support manufacturing and testing. Dominion Dynamics was founded by Erik Pence, a former executive at Anduril Industries. Financially, the company has secured C$50 million from Canada's National Research Council plus a C$21 million seed round led by Georgian with participation from Bessemer Venture Partners and British Columbia Investment Management Corporation.
Team
Ashwini Anburajan
Investor
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