Frame shared NFT ownership as a social signal
Form around the idea that people holding the same NFT already share context that could support a useful introduction.
FIELD NOTE 01KRIS HAAMER / TOKYO, JAPANAPRIL 2023
ETHEREUM / DEFI / ZK / BUILDERS
ETHGLOBALTOKYO
Three days of building, preceded by a city-wide week of summits, cafés, DAO conversations, workshops, and late-night meetups.
14—16 APRIL2023
TORANOMON HILLS FORUMTokyo, Japan
01THE WEEKEND IN NUMBERS
East Asia’s first ETHGlobal became much more than a weekend.
ETHGlobal Tokyo opened the organization’s 2023 in-person season and its first event in East Asia. Seventy percent of attendees came from Asia, more than 400 local Japanese hackers joined, and 35% of hackers were new to web3.
1,500+ATTENDEES
1,070HACKERS
311PROJECTS
59COUNTRIES
$375K+PRIZES
38PARTNERS
02PROJECT TIMELINE / 36 HOURS
Build holder discovery and contact
Create a working flow that identifies shared ownership and lets holders find and contact other people connected to the same NFT.
Demo the social connection loop
Present the prototype as a direct human use for onchain identity rather than treating the NFT as only a tradable asset.
03SIDE EVENTS / ATTENDED
The events I can verify.
This attendance log was reconstructed from registration emails, same-day notes, and timestamped photos. Registrations without corroborating evidence are deliberately omitted.
CREATOR
Web3 Creator Economy [LIVEPEER JAPAN] Meetup
A Livepeer Japan session on the creator economy at NIB Shibuya. Timestamped photos place me in the room before the evening’s next event.
NIB ShibuyaSOURCE ↗
FOUNDERS
Founder Stories ⚡ Tokyo
An evening of founder storytelling at WeWork Iceberg. My ticket, same-day venue note, and photos from the session line up.
WeWork IcebergSOURCE ↗
SUMMIT
Pragma Tokyo
ETHGlobal’s curated single-track summit at Digital Garage. Photos place me in the audience through the afternoon.
Digital GarageSOURCE ↗
PUBLIC GOODS
GreenChill — Exploration of the Nature of Public Goods
A Fracton Ventures gathering in Yoyogi Park exploring the nature of public goods through conversation and outdoor activities.
Yoyogi ParkSOURCE ↗
ECOSYSTEM
BNB Chain Innovation Roadshow — Tokyo
An AKINDO-produced evening of keynotes, ecosystem pitches, an ideathon, and networking at CryptoBase.
CryptoBase, NIB ShibuyaSOURCE ↗
04WHAT HAPPENED AFTER THE HACKATHON
Archived social prototype
The project did not become a production service in the current HAAM archive, but it remains an early experiment in using onchain identity to create human connection.
The surviving concept links shared NFT ownership with discovery and direct contact between holders.
The work now sits inside HAAM's broader archive of trust, community, and verifiable participation experiments.
01SHARED NFT OWNERSHIP AS A SOCIAL SIGNAL
02HOLDER DISCOVERY AND DIRECT CONTACT
03ARCHIVED, NOT A CURRENT PRODUCTION SERVICE
04EARLY ONCHAIN IDENTITY EXPERIMENT
FIELD NOTE / 2023
“Ideas move through people.”
The useful part of a hackathon is not only what ships on Sunday. It is the compressed network around it: the workshop that unlocks an approach, the mentor who redirects a build, and the conversation that continues after the venue closes.
Tokyo’s surrounding cafés, summits, dinners, and community sessions made that network visible.
05RESEARCH NOTES
Sources and archive
Event figures and the core schedule come from ETHGlobal’s official event page and recap. Side-event attendance was reconstructed from private archive signals including tickets, reminders, same-day notes, and timestamped photos; automated post-event emails were not treated as proof on their own. Public links identify each event without publishing those private records.