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Your VTA, your chosen perspective

The planned connection uses your VTA and the Trust Spanning Protocol to carry a scoped exchange for you or your agent. You choose what is presented; the receiving service checks the request before a view is shared.

This guide has no VTA connection adapter yet. Opening Star does not connect an identity or send a key.

Open Star โ†— ยท Inspect your City Key โ†—
guide / Field Guide / Hitchhikers Field Guide

Hitchhikers Field Guide

Our client, and the reason any of the rest of these pages exist. Written up here from the handoff pack in my own words, so the graph side of the team can see what the map side is actually building โ€” which means the details below are mine to get wrong. Max and the ARWorld side are the authority; corrections straight into this page, please.

What it is

A walking AR client. Players do not share a game room; they share the physical world and an OASIS avatar. "Multiplayer" means you witness a place, that fact lands in Knowledge, Promise decides what a peer may see, and Trust decides whose Knowledge you may query. The map then shows a quiet overlay โ€” Maya was here โ€” rather than live avatars running around.

Unity 2021.3, in an ARWorld tree originally from Kashif, with the Field Guide package layered on it. The server side is OASIS ONODE, deployed on Railway.

The idea I would steal

Discovery is not seeing a pin. Discovery is a witnessed connection with a place.

Map density from OpenStreetMap is the floor. Discovery is an act โ€” in radius, then a rite: hold-to-Witness at a desk, camera Fetch on a phone, a seal at a parish pin, a banish for an omen. Peeking a card is an encounter, not a discovery. Walking past a placeholder pub is presence, not a discovery.

That three-layer distinction โ€” presence, encounter, discovery โ€” is the sharpest thing in the pack, and it is what let the whole trust model fall out cleanly. It is also, structurally, the same distinction the trust graph makes between a proposal and a signed edge. Max got there from a game design problem; the lab got there from an anti-Sybil one.

What is already built

  • the Witness payload contract, and POST /poi/witness โ€” idempotent per avatar and place, live on Railway
  • the Unity write client, firing after check-in, fire-and-forget
  • City Attraction witnessing using the same rite as quest pins
  • GET /poi/nearby returning your own trail plus a peer overlay โ€” gold ring for a peer, teal for yourself, capped at twelve, distance first
  • a share flow after the first Witness of a session, opening a card

And the honest gap they flagged themselves: the peers in that overlay are a fixture. Phase 5 โ€” a real meet โ€” was specced and not built.

The rules already set, which I did not have to argue with

Most of the good constraints here were decided on the map side before the graph side arrived:

  • one avatar root; no second profile store, no friends database, no live-presence layer
  • no central trust score, and no map score standing in for one
  • one rite, two skins โ€” the desk and the camera must not become two meanings of discovery
  • distance first; trust must never pull Greenwich onto an Islington viewport
  • multi-hop friend-of-friend is out of scope
  • the wiki is lore, not the place database, and nothing scrapes it
  • partners join as claimed local businesses, not by relabelling map data as official

The counter-spec adds to that list. It overturns none of it โ€” which is the useful thing to be able to say after a week of poking.

What came back down the other strand

The Meet Rite for the missing edge ยท Audience Is Granted Not Computed and The Pairwise Peer Reference for the disclosure layer ยท Erosion Is A Rate Not A Cliff for their open question about recency ยท A Wiki Fork Is Not An Audience for the lore seam ยท Shared Quest Is Not Consent where I disagree with them ยท and OASIS And The Cred Spec for where our server could meet the standard, with Could This Be Zero Knowledge for where it could go after that.

The day itself is 2026-08-15 The Predicate Walks To Islington.