Union Registry
Union Registry
Quick Snapshot ⚡️
Union Registry is a playful proof-of-concept built in under 48 hours during ETHGlobal. It lets people celebrate their marriages, civil unions, or other personal bonds by registering them on-chain using Ethereum Attestations.
As the sole designer, I handled everything from UX and UI to branding, prototyping, and the pitch deck. The project received strong feedback during our live demo and sparked real interest among the audience—some even wanted to use it for their actual weddings.
Quick Snapshot ⚡️
Union Registry is a playful proof-of-concept built in under 48 hours during ETHGlobal. It lets people celebrate their marriages, civil unions, or other personal bonds by registering them on-chain using Ethereum Attestations.
As the sole designer, I handled everything from UX and UI to branding, prototyping, and the pitch deck. The project received strong feedback during our live demo and sparked real interest among the audience—some even wanted to use it for their actual weddings.


The challenge
Web3 is packed with complex, serious tools. We wanted to create something light, fun, and very human. There wasn’t a clear problem to solve—just a question:
What if committing to someone could be celebrated on-chain?
The challenge was less about solving a technical issue and more about designing an experience people would enjoy, understand, and remember.
The challenge
Web3 is packed with complex, serious tools. We wanted to create something light, fun, and very human. There wasn’t a clear problem to solve—just a question:
What if committing to someone could be celebrated on-chain?
The challenge was less about solving a technical issue and more about designing an experience people would enjoy, understand, and remember.
My Role
As the only designer on the team, I owned:
The user flow — mapping how two people could create and sign their union
UI & interaction design — playful, expressive, and fast to use
Branding — visual identity that made it feel warm and personal
Prototyping — designing the key screens and simulating the signing process
Pitch deck — building the presentation for our live demo
All of this was done in under 48 hours, alongside a PM and two developers.
My Role
As the only designer on the team, I owned:
The user flow — mapping how two people could create and sign their union
UI & interaction design — playful, expressive, and fast to use
Branding — visual identity that made it feel warm and personal
Prototyping — designing the key screens and simulating the signing process
Pitch deck — building the presentation for our live demo
All of this was done in under 48 hours, alongside a PM and two developers.
Approach
We started with a fun idea—“on-chain marriage”—and decided to make the experience feel symbolic and enjoyable rather than purely functional.
So, we created two complementary flows:
Approach
We started with a fun idea—“on-chain marriage”—and decided to make the experience feel symbolic and enjoyable rather than purely functional.
So, we created two complementary flows:
🕶 The “Better Half” Flow
Person A kicks things off by starting a union proposal. Along the way, they choose one half of a custom Noggle (yes—cool sunglasses, obviously). Once done, they share the proposal with their partner.
Watch the prototype in action.
🕶 The “Better Half” Flow
Person A kicks things off by starting a union proposal. Along the way, they choose one half of a custom Noggle (yes—cool sunglasses, obviously). Once done, they share the proposal with their partner.
Watch the prototype in action.
💌 The “Other Half” Flow
Person B receives the proposal, reviews the union details, and picks their matching half of the Noggle. When they confirm, the two halves merge into one complete pair—symbolizing the union.
After that, both users can mint their fully joined Noggle—a playful and visual token of their connection. All of this is backed by Ethereum Attestations, so it’s immortalized on-chain.
Watch the prototype in action.
💌 The “Other Half” Flow
Person B receives the proposal, reviews the union details, and picks their matching half of the Noggle. When they confirm, the two halves merge into one complete pair—symbolizing the union.
After that, both users can mint their fully joined Noggle—a playful and visual token of their connection. All of this is backed by Ethereum Attestations, so it’s immortalized on-chain.
Watch the prototype in action.
Impact
✦ Designed the full UX, UI, and branding in under 48 hours
✦ Delivered a live demo at ETHGlobal that made people smile (and laugh)
✦ Audience members wanted to use the app for real-life weddings
✦ Received small prizes and strong positive feedback from judges and peers
Impact
✦ Designed the full UX, UI, and branding in under 48 hours
✦ Delivered a live demo at ETHGlobal that made people smile (and laugh)
✦ Audience members wanted to use the app for real-life weddings
✦ Received small prizes and strong positive feedback from judges and peers
Thank you.
Thank you.

Designed & built by © Mo Saeedi.
Designed & built by © Mo Saeedi.