Seth Hallen

Were building the worlds coolest creativity tools. We are a small team of passionate researchers, builders, designers, and storytellers with big ideas.

In entertainment, advantage belongs to those who see signals before they become news. Vitrina turns early signals across projects, partners, and markets into confident, faster deal-making decisions. We are a global entertainment supply-chain intelligence platform, purpose-built for Film, TV, Animation, Documentaries, Formats, and Streaming. Vitrina helps entertainment companies overcome fragmented data, late visibility, and hard-to-reach decision-makers—by unifying projects, companies, deals, people, and market signals into one continuously updated intelligence system. Intelligence across 300,000+ companies worldwide, spanning the content lifecycle from development to distribution, trusted by 100,000+ entertainment executives. What You Can Do With Vitrina? Track Global Film & TV Projects Early visibility into unreleased and in-development projects worldwide—so streamers, producers, distributors, and service companies can engage before deals, partners, and vendors are locked. Ask VIQI (AI Intelligence Agent) Eliminates weeks of manual research by turning fragmented industry data into instant answers and recommendations—helping BD, content, strategy, and sales teams move faster and decide with confidence. Secure Financing & Co-Production Partners Reduces deal friction by combining intelligence with hands-on execution—helping producers, studios, and sellers find the right financiers, co-production partners, and buyers (not just more introductions). Skill up with the Innovation Hub Cuts through industry noise with intelligence grounded in real deal activity—giving executives and strategists clarity on what’s changing, where, and why it matters, before strategies are set. 📩 𝘀𝘂𝗽𝗽𝗼𝗿𝘁@𝘃𝗶𝘁𝗿𝗶𝗻𝗮.𝗮𝗶

Stealth AI Startup is a private community for founders, researchers, and engineers building next-generation AI companies before public launch. Founders tag themselves here to: 🔹 Gain credibility while working in stealth 🔹 Connect discreetly with other AI founders 🔹 Receive inbound interest from early-stage VCs 🔹 Join curated founder-only circles & discussions 🔹 Access hiring pipelines for early team building If youre building an AI startup in stealth, add your profile to the community and tag yourself to this page. Your stealth journey deserves visibility — without revealing your idea. Join the world’s largest AI stealth founder network.

The HPA is a non-profit member association dedicated to recognizing, educating, and connecting businesses with a diverse community who provide creative and technical expertise, support, tools and infrastructure for professional content creation, distribution and archive in the media and entertainment industry. Through our three pillars of activities — Community, Knowledge Exchange, and Recognition — the Hollywood Professional Association (HPA) advances the arts, science and business of the media and entertainment industry.

Hallstone Ventures is a Los Angeles-based seed fund backing founders building AI-driven infrastructure for the modern attention economy. We invest in the foundational software layer behind how media is created, distributed, measured, protected, monetized, and experienced. Our focus spans creator infrastructure, AdTech and monetization rails, immersive and spatial media systems, and frontier media technologies. Led by media-technology operator Seth Hallen, Hallstone pairs sector focus with a 70+ LP network of operators and domain experts across media, entertainment, advertising, and technology. We back founders building durable technology for the next generation of creators, brands, platforms, and media companies. Fund I is closed to new investors. Nothing here should be construed as an offer to sell or solicitation of an offer to buy securities.

A network for entrepreneurs building in stealth. Submit your information here so investors can find you: harmonic.ai/get-discovered

Were building the worlds coolest creativity tools. We are a small team of passionate researchers, builders, designers, and storytellers with big ideas.

In entertainment, advantage belongs to those who see signals before they become news. Vitrina turns early signals across projects, partners, and markets into confident, faster deal-making decisions. We are a global entertainment supply-chain intelligence platform, purpose-built for Film, TV, Animation, Documentaries, Formats, and Streaming. Vitrina helps entertainment companies overcome fragmented data, late visibility, and hard-to-reach decision-makers—by unifying projects, companies, deals, people, and market signals into one continuously updated intelligence system. Intelligence across 300,000+ companies worldwide, spanning the content lifecycle from development to distribution, trusted by 100,000+ entertainment executives. What You Can Do With Vitrina? Track Global Film & TV Projects Early visibility into unreleased and in-development projects worldwide—so streamers, producers, distributors, and service companies can engage before deals, partners, and vendors are locked. Ask VIQI (AI Intelligence Agent) Eliminates weeks of manual research by turning fragmented industry data into instant answers and recommendations—helping BD, content, strategy, and sales teams move faster and decide with confidence. Secure Financing & Co-Production Partners Reduces deal friction by combining intelligence with hands-on execution—helping producers, studios, and sellers find the right financiers, co-production partners, and buyers (not just more introductions). Skill up with the Innovation Hub Cuts through industry noise with intelligence grounded in real deal activity—giving executives and strategists clarity on what’s changing, where, and why it matters, before strategies are set. 📩 𝘀𝘂𝗽𝗽𝗼𝗿𝘁@𝘃𝗶𝘁𝗿𝗶𝗻𝗮.𝗮𝗶

Stealth AI Startup is a private community for founders, researchers, and engineers building next-generation AI companies before public launch. Founders tag themselves here to: 🔹 Gain credibility while working in stealth 🔹 Connect discreetly with other AI founders 🔹 Receive inbound interest from early-stage VCs 🔹 Join curated founder-only circles & discussions 🔹 Access hiring pipelines for early team building If youre building an AI startup in stealth, add your profile to the community and tag yourself to this page. Your stealth journey deserves visibility — without revealing your idea. Join the world’s largest AI stealth founder network.