I build blockchain
infrastructure for
banking.
Founder & builder across blockchain, AI, and markets. My focus is stablecoins and the compliant rails that move real money on-chain — built with financial institutions, not around them.
- #1
- Block producer, XPR Network
- 10+ yrs
- Building in crypto
- 10+
- Products shipped
- NZ
- Based & operating
My own ventures & products
Outside Metallicus, these are mine — built and shipped on XPR Network and beyond. The through-line: practical systems at the frontier of money and AI.
A builder and operator at the meeting point of money and machines.
I'm Paul Grey — based in New Zealand, building at the frontier of blockchain and AI for over a decade. I run Proton NZ, the #1 block producer on XPR Network, and Second Brain NZ.
My center of gravity is stablecoins and blockchain for banking: giving regulated institutions a compliant path to on-chain money instead of leaving the future of finance to offshore exchanges. I'm not a hype merchant. I ship real products and write practical guides.
Read the full storyStablecoins & banking
On-chain money that keeps institutions central — deposit digitization, compliant issuance, interoperable rails. The Metal Dollar thesis: retention, not flight.
AI systems & agents
Trustless AI agent registries, durable machine memory, and regional AI skills — building the cognitive infrastructure that actually holds up in production.
Markets
Active in crypto and broader markets. I write about what I see from the screen — insights from doing the work, never financial advice.
Latest thinking
Practical notes on stablecoins, banking infrastructure, AI agents, and building in NZ.
Building at the edge of money and AI?
I'm always open to a constructive conversation — institutions exploring on-chain money, builders, and operators who stay heads-down. From one person in the ANZ market to another.