Agentprivacy Key Forging

PVM-V5 Privacy Layer — Key Forging

Source: Privacy Value Model V5.4 §12.6 / V6 Band VIII + the Swordsman's Key holospace (github.com/mitchuski/star) Target context: AI system builders, identity engineers, holonic-systems researchers Architecture: agentprivacy.ai · Sync: sync.soulbis.com · Contact: mage@agentprivacy.ai

What this is

A person's standing is not an account row. It is forged: experience → trust tasks → vertices → compression → a portable key whose identity is its content. The City Key 🗝️ is a few kilobytes of JSON that carries a whole standing across surfaces with no server holding identity at any step.

The loop:

mint 🗝️   agentprivacy.ai/city      achievements + focus exported as the key
walk ⚔️   soulbis.com/star          presence accrues as trace (laps · dwell)
prove 🧙   soulbis.com/lattice       poured focus discharged by walking → witness
name 🪬   soulbis.com/sigil         κ re-derived in the open · the sigil drawn
gather 🌌 soulbis.com/skye          many keys, one sky — lineage + common ground
charge 🗝️ back at /city             the proof banks 🪢 VRC mana

The five load-bearing mechanisms

1. The κ-label — identity is content, not location

kappa = "sha256:" + H(canonical form) — canonical form is the key's JSON, keys sorted recursively, no whitespace, kappa excluded from its own preimage. A fingerprint, not a transformation; never trusted, always re-derived at import (holospaces Law L5). C66 keeps it honest: the κ is a name, never an authority — a mismatch is reported, not gated on.

2. The carrier — the picture IS the key

The sigil PNG embeds the full key (base64 JSON, PNG tEXt chunk, keyword cityKey). Share the portrait and you have shared the key; every consumer unfolds it back out. Portability, not secrecy — which is why mechanism 4 exists.

3. Geometry in the key — shape descends the chosen→earned→measured ladder

• v1: stance chosen (slider geometry travels in the key)
• SHAPE-1.5: relief earned — per-vertex engraving from focus/lit/witness/ described, a pure function of content (same key ⇒ same shape everywhere)
• FIG-2.0: shape measured — a figures block (agent-data overlap, protect:project ratio, per-dimension visibility, zkp counts) drives the manifold; the rosette becomes a sovereignty profile
• v3 (horizon): shape proven — ZK predicates against the κ commitment

4. The redacted charge pass — proof without disclosure

{ version, redacted: true, of: κ(full key), trace, witness, kappa } — only the proof travels; inscriptions, palette, focus amounts and identity stay home. The charge surface reads trace/witness identically and dedups against the full key (one proof, one charge). This is the selective-disclosure rung in practice, and the C81/C84 reminder applies: even a redacted pass is an existence attestation — let the bearer choose what to enter.

5. The prior κ-chain — the key accumulates (C87)

An evolved export stamps prior = the ancestor's κ; an unchanged re-export is idempotent (same bytes, same κ). Keys form a hash-chained lineage — folding-style accumulation in miniature: each generation commits to the one it grew from, and the whole history is checkable from content alone.

Why this matters for privacy engineering

• No registry. Standing travels as a file; verification is re-derivation.
• Compression is the trust signal. The key is small because trust tasks already compressed the experience; what remains is exactly the provable part.
• Disclosure is graduated. Full key → sigil portrait → redacted pass → (designed) blinded intersection: each rung discloses strictly less while staying checkable.
• The UI is load-bearing (C85). The rooms aren't visualisation — walking, proving and naming are the protocol steps themselves, performed in the open.

Cross-references

• OVERLAP_KEY_FORGING_X_V6_2026-06-10.md (repo root) — the V6 Band VIII convergence map (C85–C89 × the star suite)
• star repo: HOLOSPACE.md (the substrate seam) · HOW_THE_SIGIL_WORKS.md (the carrier) · PLAN_KEY_EVOLUTION_MEASURED_GEOMETRY_2026-06-10.md (the figures ladder, incl. §v3.5 ECDH-PSI)
• siblings: [[agentprivacy-content-addressing]] · [[agentprivacy-vrc-identity]] · [[agentprivacy-disclosure-phi]] · [[agentprivacy-compression-defence]]

Forge, forget, remember, walk, prove, name — the key accumulates, the person stays home. (⚔️ ⊥ ⿻ ⊥ 🧙) 😊