What we've built

Rizz

Technical implementation partner to LAB75 · prototype

A 16-year-old who verifies once should not leave a copy of their passport in a chat app's database. Most apps for young people skip real age assurance, keep the documents, or moderate by reading everything; under European platform and privacy law, none of that holds.

Rizz is a chat app with servers, channels, groups and direct messages, designed so age is proven with a zero-knowledge proof, using the EU Digital Identity Wallet where it is available. No date of birth is stored. Members aged 13 to 15 join with a linked parent, who approves contacts and sees where they hang out, not what they say.

Moderation is report-first: safety checks run on the phone, and people review only what is reported. LAB75, the Frankfurt studio the practice grew out of and now a venture studio, runs Rizz as a venture; we are its technical implementation partner. It reuses the age-proof design of game3.id. The first version is built; a public beta in Germany, Austria and the Netherlands comes next.

Identity · Compliance infrastructure · Security

Denario

CTO-in-residence · completed · 2024–2026

A CTO-in-residence engagement, 2024 to 2026. We architected the technical stack: token issuance, cross-chain bridging via LayerZero, on-chain price feeds and proof of reserve via DIA, and onboarding for additional chains.

Each token — DSC and DGC — is redeemable for 1 oz of physical silver or gold, held in Swiss high-security vaults. We also built the compliance framework, stable rails, and laid the groundwork for card issuance. For executives and service personnel, we delivered a RAG system.

Particula rated the issuance BBB+ for technical soundness, legal architecture and regulated structure.

• Site
• Particula rating
• DSC on Polygonscan
• DGC on Polygonscan
• DIA oracle integration
• Light paper: The Convergence Triangle →

Compliance infrastructure · Finance · On-chain systems

Donations on stable rails

Confidential · completed · 2025–2026

Giving runs on rails built for something else. Americans gave $617 billion in 2025, yet a card donation loses a share to fees, a cross-border grant takes days to land, and few donors, retail or institutional, can see where their money went.

For a confidential client, we bootstrapped the full application stack in about four months: a mobile wallet with stablecoin balances, social login and no seed phrase; an identity layer on decentralised identifiers and verifiable credentials; smart contracts and an SDK. Card issuance runs through a partner behind a provider-agnostic interface, so a card spend can round up into a donation that settles on the same rail.

That rail scales from a ten-dollar round-up to a foundation or donor-advised-fund grant, with programmable splits, fast cross-border settlement and an audit trail that reports impact without exposing the donor. Regulated stablecoins are becoming institutional infrastructure: stablecoin-linked card spend on Visa grew 319% to $5.2 billion in 2025, and the GENIUS Act and MiCA give issuers a licence to operate.

Client and further specifics remain confidential.

• Light paper: The Convergence Triangle →
• Light paper: Infrastructure for Verifiable Impact at Scale →

Finance · Identity · Compliance infrastructure

GameDAO

Architected, built and shipped · sunset · 2019–2025

Game studios, esports teams and guilds raise money and make decisions as communities, but mostly run both on spreadsheets and goodwill. GameDAO put them on-chain: a group forms an organisation, runs campaigns into a shared treasury, votes on proposals and builds its members' reputation over time.

We architected, built and shipped it as a set of Substrate modules running natively on ZERO Network, built to be regulator-ready. Like the chain, it was audited by SRLabs in an automated review during the Substrate Builders Program. Started in 2019 and deployed in 2022, it is no longer operated in that form.

• Site
• Documentation

On-chain systems · Gaming · Security

Battlepass

Architected and built · sunset · 2023–2025

Esports organisations and creators have audiences, but few ways to reward the fans who keep showing up. Battlepass gave them a white-label season: fans complete quests in Discord and on social, earn points, level up and claim the rewards the organisation chooses, from digital items to merchandise and event access.

Fans subscribed to a team's battlepass by card, with Stripe handling the subscriptions underneath. We sponsored ÆX-1 and ran the go-to-market campaign with WAVE Esports, two successful teams with fan bases to match.

On-chain, each season belonged to a GameDAO organisation: joining minted a membership token, levels had point thresholds, and rewards were claimable as NFTs, while off-chain services tracked the quests. It was the flagship application on GameDAO and ZERO Network, and is no longer operated.

Gaming · On-chain systems

game3.id

Founder and operator · prototype

Every app asks how old you are; game3.id lets a player answer once. Games reach more than three billion players without a shared identity layer, so each new check leaves another company holding a passport scan, and a player's identity belongs to whichever studio issued the account.

game3.id gives the player a self-sovereign identifier and zero-knowledge proofs, starting with age, that a game can verify without learning who they are. The protocol stores no personal data. It is built for GDPR and the EU Digital Identity Wallet.

The same identity extends to agents. A player delegates scoped, expiring authority to software acting on their behalf, so a game or a payment rail can check who authorised an action, and within what limit.

Contracts, the age-proof circuit, agent delegation and name claiming run on Amoy, the Polygon testnet; web and Unity SDKs and Sign in with game3 are in early access. The protocol is governed by the Game3 Association in Switzerland and operated by Zero Reality. spray.cash and Rizz are in development with game3.id.

• Site
• Light paper: Self-Sovereign Identity for Interactive Entertainment →

Identity · Gaming · Agentic systems

spray.cash

Founder · prototype

Young Europeans run their money across a pocket-money card, a payment app that only works from 18, game vouchers and a festival wristband whose balance expires on Monday. spray.cash puts it in one wallet that is truly theirs, moves as fast as their life, and works inside limits they set.

The user holds the keys; we hold none. Balances are regulated euro and franc e-money tokens, users never deal with chains or gas, and every step that needs a licence runs through a licensed partner.

Authority is explicit. Every spend, by the user or by an agent buying for them, runs under a mandate that names an amount, a counterparty and an expiry; a mandate without a bound grants nothing. Age and guardian consent arrive as game3.id proofs, not document copies, and there is no credit, overdraft or buy-now-pay-later below 18.

A closed pilot with adults in Germany and Switzerland, recruited from game and creator communities, comes first.

• Site

Finance · Identity · Agentic systems · Compliance infrastructure

Vision

Founder · prototype

Stop re-rolling for a result you can't get back. Vision generates assets, levels and worlds as versioned artefacts — same seed, same output, every time — so you build on what worked instead of starting over.

Full fidelity, fully composable, no slop. It runs as a deterministic graph, wiring your model of choice into your existing toolchain — Blender and Unity to start. Early access is opening in small batches.

Gaming · Product design

wasd.fund

Founder · research

An agent-curated investment protocol: agents read and vote on allocations. Not a fund Zero Reality operates — a protocol in research.

• Site

Finance · Agentic systems

ktrl.one

Founder · prototype

A game controller: hardware and interface design for players and companions — the product-design discipline the practice started with as research in 1999.

• Site

Product design · Gaming

ZERO Network

Built and maintained · sunset · 2022–2024

Conceived in 2017 as the chain games and their economies could run on: native assets, payments, identity and governance, built to a regulator-oriented standard. A public testnet ran from 2020, and the chain went through the Substrate Builders Program, backed by Parity and the Web3 Foundation, including an automated security audit by SRLabs.

ZERO Network won two Kusama parachain auctions, self-funded, and held para ID 2236 from December 2022 until the lease ended in October 2024. GameDAO and Battlepass ran on it as its application layer. It is no longer operated; the codebase remains public.

• Source
• Parachain record
• Light paper: Zero: Agentic World Models →

Finance · Compliance infrastructure · On-chain systems