Devlog

ETHGlobal Tokyo started today. By the evening we had:

• Residency.sol — and **ResidencyFactory.sol** — the core contracts. One factory deploys one Residency per stay. Funds never mix.
• 22 unit tests + fuzz + invariant suite + mainnet fork test — — all passing against real USDC on a mainnet fork.
• Database schema — — users, profiles, cities, core team, residency series, proposals, residencies, applications, receipts. Every onchain event has its corresponding table row.
• SIWE auth — — Sign-In with Ethereum, session cookies signed with jose.
• World IDKit 4.x — — Proof of Human widget, server-side RP signing, developer API verification, one nullifier per wallet.

The big design decision: cities are offchain containers (Postgres), and residencies are onchain contracts. This means launching a city is free (no gas), and each residency's money is isolated in its own contract.

The city layer was a late addition — the original design had cities as metadata-only. The offchain city with a core team that approves proposals turned out to be the right abstraction: it decouples city governance from onchain risk.

All the API routes are live:

• Auth: — nonce, verify, logout, me
• World ID: — rp-context, verify, dev-verify
• Cities: — CRUD, core team management, proposals
• Residencies: — deploy recording, applications, approvals, receipts
• Profiles: — read, update, photo upload
• Directory: — paginated listing with search and city filter

The frontend pages are built and styled — Luma-inspired design with white backgrounds, generous whitespace, rounded cards, and gradient covers generated from each city/residency name (no image uploads needed).

Pages: home (/), launch, cities (listing + detail + manage + propose), proposals, residency (detail + manage + apply), series, people (directory + profile), me (profile edit), verify.

The mission statement was written: *"Accelerate human coordination across cultural bond building and extropian differential acceleration perspective."* This is not marketing copy — it's a design constraint. Every feature was checked against whether it makes coordination easier, more reversible, or more voluntary.

We integrated World ID Proof of Human via IDKit 4.x. Key takeaways:

• No Orb verification required. — The World App's built-in uniqueness check is enough. You scan a QR code, the app generates a Proof of Human, the server verifies it against World's developer API.
• One nullifier per wallet. — The UNIQUE constraint on users.nullifier means trying to use the same World ID with a second wallet returns a 409 error.
• Self-attested 18+. — World's minimum_age Identity Check is in preview. For now, the user checks a box. We'll swap it in when World grants access.
• Server-side RP signing. — The RP signing key never leaves the server. The client gets a signed context, sends the proof, and the server forwards it to developer.world.org/api/v4/verify.

The full debrief is in docs/WORLD-IDKIT-DEBRIEF.md.

AI City is the grouping layer of a larger vision. Read the full vision:

- [Infomorph Stack Vision](/blog/infomorph-extropianism) - [Docs: Extropian Vision](/docs#extropian)

The short version: an infomorph is a mind that exists as a distributed information pattern rather than being bound to a single body. Chislenko wrote about this in 1996. The extropians — who were also the cypherpunks — built the tools. AI City is the onchain grouping layer: a coordination primitive that lets infomorphs assemble around shared problems and dissolve when the problem is solved.

The roadmap: 1. **Now:** Residency MVP on mainnet (this weekend) 2. **Edge City Goa (Oct–Nov 2026):** City vault, concierge agents, Reachy as house robot, drone budget 3. **2027:** ZK practice proofs, journal inheritance, multi-city personas, cities that fork