A cross-collaborative crypto future.
Beginning the Aggregation narrative >>
Project SummaryAggDay Brussels was born out of urgency. As the Web3 ecosystem fractured across chains, Polygon made a decisive move to own the interoperability narrative by bringing AggLayer to market fast, pairing deep technical clarity with the most credible partners in the space.
Set against the chaos of ETHCC [7] week with 600+ competing side events, this wasn’t a safe launch; it was a land grab for attention, trust, and mindshare across Europe. The goal was clear: break through the noise, prove technical legitimacy, and position Polygon at the center of the next wave of blockchain infrastructure.
AggDay did exactly that, cutting through a saturated landscape and turning a complex protocol into a live, high signal moment that rallied builders, founders, and researchers around aggregation as the path forward.
AggDay Brussels was the first in-person event designed to introduce Polygon’s AggLayer vision to the Web3 ecosystem. Hosted during Ethereum Community Conference week, the gathering brought together founders, researchers, and builders to explore how aggregation could solve one of crypto’s biggest challenges: blockchain fragmentation. The event marked the opening moment of Polygon’s AggLayer go-to-market narrative, turning a complex technical idea into a live industry conversation.
The Challenge
Web3 was fragmenting fast, and interoperability was still an open question. Builders were skeptical, and AggLayer was entering as a new, unproven approach in a space where credibility had to be earned, not claimed.
Polygon needed to do more than introduce a product. It had to build belief. That meant translating a complex technical vision into something tangible, aligning with trusted partners, and creating a moment where builders could see, question, and start building against it.
AggDay had one job. Turn skepticism into conviction and make AggLayer feel real.
My Role
Lead Project Manager / Executive Designer + Producer
I led the end-to-end planning and execution of the summit in partnership with executive co-producers:
• Mihailo Bjelic— Co-Founder, Polygon
• Leon Stern — SVP, Marketing
Key responsibilities:
• Led cross-functional coordination across 18 internal and external collaborators
• Oversaw production agencies (3), venue operations, design, integrated marketing, founder-level outreach, and led programming.
• Directed the event narrative, attendee experience, and ecosystem programming
• Delivered the full event within a $35,000 budget, including marketing, design, and advertising.
Teams managed included:
• Marketing and Growth
• Developer Relations
• Founders Community
• Production Agency
• Venue Management
• External Design Agency
• Ticketing Platform and Registration Operations
The Experience
Guests arrived at La Bellone, a historic, art-forward venue that immediately set the tone. From the moment you walked in, you were met with curated merch and playful, immersive Mokibaby installations that softened the technical edge of the narrative and pulled people into the world of AggLayer.
The journey naturally opened into a glass-ceiling main room, where light poured in over a stage featuring some of the most respected voices in crypto. Founders, researchers, and infrastructure leaders took the stage to unpack the future of aggregated liquidity, trust, and security, turning what could have been abstract into something tangible and real.
The experience was intentionally balanced. Technical depth on stage, cultural and visual storytelling throughout the space. It created an environment where builders could not only understand AggLayer but also feel its momentum and believe in where it was going.
Results (tl;dr)
Major announcement with Fabric Cryptography, generating global press and reinforcing AggLayer’s technical credibility.
420 builders, founders, and CTOs packed the room and stayed engaged all day despite heavy conditions.
Conversations from AggDay directly led to key partnerships and technical collaboration, accelerating core AggLayer development, including a zero-knowledge security mechanism, The Pessimistic Proof.
Honorable Mention:
Crowdmuse x Polygon
The Circular Apparel Collection for Polygon, which was exclusively available for EthCC Brussels, was an opportunity to display a real use case: e-commerce.
People would typically rave about our merch all over crypto Twitter. Well, this time they were on Crowdmuse and purchasable in USDC or Credit Card on the Polygon Network.
This project was ideated and executed end-to-end by me, but included the help from CM, Mntge, and Oddinary.
Impact: ++ Polygon Brand
AggDay Brussels was not a standalone moment. It was part of a coordinated, multi-day push by Polygon to own the conversation around aggregation, ZK, and interoperability during ETHCC week, Europe’s largest Ethereum gathering with thousands of attendees and hundreds of parallel events.
Across the week, Polygon showed up everywhere builders were:
• AggDay Brussels — flagship technical moment introducing AggLayer
• Ecosystem talks and panels across ETHCC, shaping the interoperability narrative
• Curated side events and meetups that extended conversations into smaller, high-signal rooms
• Partner activations and happy hours that deepened relationships with builders and founders
• Late-night cultural moments that kept the brand present beyond the conference floor
The strategy was simple but powerful:
Don’t just host an event. Own the week.
By combining flagship programming with distributed touchpoints across the city, Polygon created a constant surface area with the ecosystem — reinforcing AggLayer not just as a product launch, but as a movement builders could step into from multiple angles.
B O N U S
Following the success of Nous nous sommes déjà rencontrés at NFT Paris 2024, The Sandbox and Polygon reunite to transform Reset’s 3,000 sqm R0 Level in Brussels into a boundary-pushing immersive experience where digital and physical worlds collide.
At the center of the experience is Qantvm Experience, a world-first holographic DJ performance that redefines live entertainment, blending cutting-edge visuals with real-world presence. Surrounding the main stage, over twenty artists showcase interactive and immersive installations, positioning the event at the forefront of art, culture, and web3 innovation.
Guests are invited to move beyond passive attendance into active creation, with hands-on workshops led by Belgian creatives where attendees can design and produce custom, made-to-measure swag using 3D printing technology (limited to the first 100 participants).
This event serves as a cultural and technological convergence point, bringing together artists, builders, and forward-thinking audiences to experience the next evolution of digital expression in a physical space.
Location: Rue de la Banque, Brussels
Format: Immersive exhibition + live performance + interactive workshops
Audience: Artists, creators, web3 builders, culturally curious attendees
Objective: Position The Sandbox and Polygon at the forefront of experiential web3 culture by creating a high-impact, shareable moment that bridges digital innovation with real-world connection.
