{
  "schemaVersion": "1.0.0-public-snapshot",
  "id": "PRJ-SB-001",
  "displayId": "SB-001",
  "slug": "signalbridge",
  "name": "SignalBridge",
  "summary": "A proof-oriented bridge for evaluating whether systems and collaborators can exchange claims, evidence, and readiness without trust laundering.",
  "purpose": "A proof-oriented bridge for evaluating whether systems and collaborators can exchange claims, evidence, and readiness without trust laundering.",
  "regionId": "civic-commons",
  "projectType": "Evidence bridge",
  "status": "Active",
  "maturity": "Growing",
  "evidenceClassification": "Research-grounded",
  "visibility": "public-candidate",
  "canonConfidence": "Core",
  "launchTier": "Tier 1",
  "paths": [
    "understand",
    "build",
    "collaborate"
  ],
  "tags": [
    "evidence bridge",
    "evidence",
    "collaboration"
  ],
  "claimBoundaryVersion": "1.1.0",
  "claimBoundary": {
    "supported": "SignalBridge whitepaper v0.3, a Proof Run, and an agent-readiness rubric establish a documented evidence-exchange architecture.",
    "notClaimed": "SignalBridge is not universal interoperability, automatic verification, a certification authority, or proof that participating systems are trustworthy."
  },
  "knownLimitations": [
    "A valid envelope does not guarantee the underlying evidence or interpretation is correct.",
    "Readiness rubrics can become checkbox theater unless tested adversarially.",
    "Cross-system identity and signatures require secure key custody.",
    "One clean interactive proof-run viewer is still missing."
  ],
  "currentState": {
    "summary": "SignalBridge is recorded as Active at the Growing stage. The inventory currently marks 4 artifact lanes Ready, 3 Partial, and 1 Missing.",
    "maturityStage": "Growing",
    "maturityStageIndex": 2,
    "note": "B3 Tier 1 room draft · Core canon · Research-grounded evidence · public candidate"
  },
  "capabilities": [
    {
      "symbol": "⇄",
      "title": "Packages evidence handoffs",
      "description": "Carries claim, source, method, confidence, boundary, and requested use together."
    },
    {
      "symbol": "✓",
      "title": "Tests agent readiness",
      "description": "Evaluates whether a sender can provide enough identity, provenance, and constraints for a receiving system."
    },
    {
      "symbol": "⛔",
      "title": "Refuses trust laundering",
      "description": "Prevents a receiver from treating a confident or well-formatted claim as verified authority."
    }
  ],
  "architecture": {
    "summary": "SignalBridge uses signed or inspectable envelopes, an agent-readiness rubric, proof runs, receiver validation, and ALO-compatible handoff receipts.",
    "layers": [
      {
        "name": "Signal envelope",
        "role": "Claim, evidence, provenance, confidence, scope, expiry, and requested action.",
        "status": "demonstrated"
      },
      {
        "name": "Readiness rubric",
        "role": "Identity, source access, method disclosure, boundaries, and correction behavior.",
        "status": "demonstrated"
      },
      {
        "name": "Receiver gate",
        "role": "Accept, reject, quarantine, request evidence, or narrow the claim.",
        "status": "designed"
      },
      {
        "name": "Proof-run viewer",
        "role": "Human-readable comparison of sent evidence and accepted interpretation.",
        "status": "planned"
      }
    ]
  },
  "roadmap": [
    {
      "phase": "Now",
      "title": "Freeze the public envelope example",
      "description": "Publish one complete claim, evidence, boundary, rejection, and correction sequence."
    },
    {
      "phase": "Next",
      "title": "Build the proof-run viewer",
      "description": "Let a visitor compare what was sent, what was accepted, and what remained unresolved."
    },
    {
      "phase": "Later",
      "title": "Test incompatible collaborators",
      "description": "Measure failure behavior when systems disagree about evidence, identity, or authority."
    }
  ],
  "relatedProjectContext": [
    {
      "projectId": "PRJ-MEN-001",
      "relationship": "Connected through: Evidence and production claims"
    },
    {
      "projectId": "PRJ-ALO-001",
      "relationship": "Evidence exchange receipts"
    }
  ],
  "contentStatus": "draft",
  "recordUpdatedAt": "2026-07-25",
  "sourceNote": "Public-safe static snapshot generated from the v0.4 B4 review registry. Source files and private working notes are not embedded."
}