{
  "schema": "varexis-public-evidence-record/0.3",
  "generated_at_utc": "2026-10-24T21:35:02.243Z",
  "record_id": "VXI-EXT-PROCUREMENT-X402-SOLANA-ADDRESS-LOOKUP-FAIL-CLOSED-01-v1",
  "record_kind": "external_reference",
  "title": "x402 Solana hidden-account verification",
  "system": "x402 Foundation",
  "evidence_family": "vendor_evidence_review",
  "index_status": "PUBLIC_SAFE_SOURCE_REVIEW",
  "evidence_state": "PRIMARY_DOCUMENTATION_REVIEW_ONLY",
  "canonical_question": "Can an x402 Solana sponsor sign before resolving the transaction address lookup tables?",
  "near_questions": [
    "Can unresolved Solana addresses be skipped in x402 verification?",
    "What should a sponsor do when address lookup fails?",
    "When must x402 fee-payer isolation be checked?",
    "Does a transient lookup error permit Solana payment signing?"
  ],
  "supported_claims": [
    {
      "claim": "The reviewed binding requires address lookup tables to be resolved before fee-payer isolation checks, making the reachable accounts visible. If the sponsor cannot resolve them, including a transient resolution failure, it must reject rather than verify an incomplete account set. The rule applies before signing.",
      "reliance": "DOCUMENTED_CAPABILITY_ONLY"
    }
  ],
  "not_demonstrated_claims": [
    "Independent verification of payment, delivery or deployed controls",
    "Actual table contents and signing controls have not been inspected.",
    "Buyer deployment testing, live runtime enforcement, certification or permission to act",
    "Expanded capabilities or licences for existing INDEX executables"
  ],
  "public_summary": "The reviewed binding requires address lookup tables to be resolved before fee-payer isolation checks, making the reachable accounts visible. If the sponsor cannot resolve them, including a transient resolution failure, it must reject rather than verify an incomplete account set. The rule applies before signing.",
  "related_record_ids": [],
  "source_review": {
    "source_type": "official_external_documentation",
    "source_title": "Exact Payment Scheme for Solana Virtual Machine (SVM) (`exact`)",
    "source_url": "https://raw.githubusercontent.com/x402-foundation/x402/4241d56cae2fb7ed06cd18e3a9ff2a3457b1ce54/specs/schemes/exact/scheme_exact_svm.md",
    "checked_on": "2026-10-24",
    "candidate_record_id": "VXI-EXT-PROCUREMENT-X402-SOLANA-ADDRESS-LOOKUP-FAIL-CLOSED-01-v1",
    "candidate_record_sha256": "0d9880155d995cc70a422af358b9e7c7a6613a61ede83ceee160a71054a2e445",
    "method": "Primary documentation reviewed for the published bounded statement.",
    "deployment_tested_by_varexis": false,
    "revalidation": "The delivered snapshot preserves the review date shown. Recheck current primary documentation and deployment context before relying on present applicability; payment does not trigger fresh research."
  },
  "answer_policy": {
    "classification": "DOCUMENTED_WITH_DEPLOYMENT_BOUNDARY",
    "bounded_answer": "The reviewed binding requires address lookup tables to be resolved before fee-payer isolation checks, making the reachable accounts visible. If the sponsor cannot resolve them, including a transient resolution failure, it must reject rather than verify an incomplete account set. The rule applies before signing.",
    "required_buyer_context": "Full resolved transaction accounts; Lookup-table resolution result; Fee-payer isolation checks before signing. Buyer deployment not inspected.",
    "missing_evidence": "A broader claim needs evidence matching the intended use. Payment does not upgrade the evidence state."
  },
  "private_boundary": "Raw logs, thresholds, private paths, source code, protected mechanisms and reconstruction-level details are excluded from public and paid delivery.",
  "decision_profile": {
    "schema": "varexis-vendor-evidence-review/1",
    "review_status": "documentation_review_only",
    "checked_on": "2026-10-24",
    "claim_to_check": "Can an x402 Solana sponsor sign before resolving the transaction address lookup tables?",
    "documented_statement": {
      "status": "documented",
      "statement": "The reviewed binding requires address lookup tables to be resolved before fee-payer isolation checks, making the reachable accounts visible. If the sponsor cannot resolve them, including a transient resolution failure, it must reject rather than verify an incomplete account set. The rule applies before signing.",
      "source_ids": [
        "x402-svm"
      ]
    },
    "review_inference": {
      "status": "review_inference",
      "statement": "Prevent fee sponsorship from authorising an incompletely inspected account set. This is a review decision, not an observed buyer result.",
      "source_ids": [
        "x402-svm"
      ]
    },
    "buyer_evidence_required": [
      "Full resolved transaction accounts",
      "Lookup-table resolution result",
      "Fee-payer isolation checks before signing"
    ],
    "review_condition": {
      "status": "varexis_review_policy",
      "statement": "Do not treat unresolved accounts as safe or absent."
    },
    "unknowns": "Actual table contents and signing controls have not been inspected.",
    "unknown_finding": {
      "status": "unknown",
      "statement": "Actual table contents and signing controls have not been inspected."
    },
    "evidence_sources": [
      {
        "source_id": "x402-svm",
        "url": "https://raw.githubusercontent.com/x402-foundation/x402/4241d56cae2fb7ed06cd18e3a9ff2a3457b1ce54/specs/schemes/exact/scheme_exact_svm.md",
        "final_url": "https://raw.githubusercontent.com/x402-foundation/x402/4241d56cae2fb7ed06cd18e3a9ff2a3457b1ce54/specs/schemes/exact/scheme_exact_svm.md",
        "status": 200,
        "captured_at_utc": "2026-10-24T21:23:34.435Z",
        "sha256": "d12110e7b880ce1e137ea2c41cc4daca5fc86aa8f724b0c816c310bb31b5941e",
        "bytes": 23100,
        "title": "Exact Payment Scheme for Solana Virtual Machine (SVM) (`exact`)",
        "hash_basis": "Decoded HTTP response body bytes",
        "rights_review": "Original factual paraphrase and source metadata only; Apache-2.0 repository captures retained privately and not redistributed.",
        "checked_on": "2026-10-24",
        "capture_status": 200,
        "claim_review_completed": true,
        "reviewed_sections": [
          "1.1 Required Payment Outcome",
          "1.2 Payment Identification",
          "1.4 Exactly One Matching Transfer",
          "2. Sponsor Acceptance Policy",
          "2.2 Cost and Griefing Controls",
          "2.3 Policy Flexibility",
          "2.1.1 Fee Payer Isolation",
          "2.1.2 Address Lookup Table Visibility",
          "3.4 Post-Settlement Verification",
          "Duplicate Settlement Mitigation"
        ],
        "version_context": "Pinned x402-foundation/x402 revision 4241d56cae2fb7ed06cd18e3a9ff2a3457b1ce54 captured 2026-10-24. Documentation revision, not evidence that any buyer deployment conforms."
      }
    ],
    "observed_deployment": false,
    "commercial_reliance_boundary": "Documentation review only; the buyer must establish applicability and actual outcomes. INDEX does not inspect or control the deployment.",
    "paid_value": {
      "decision_context": "Prevent fee sponsorship from authorising an incompletely inspected account set.",
      "free": "Complete review, sources, practical questions and limitations; may be saved locally.",
      "single_request": "Existing server-saved version-bound route snapshot for later authenticated retrieval.",
      "evidence_receipt": "The same snapshot plus the existing unsigned delivery receipt.",
      "excluded": [
        "Fresh vendor research",
        "Continuous monitoring or change alerts",
        "Testing the buyer configuration",
        "Private evidence or vendor certification"
      ],
      "integrity": "Hashes identify content versions; they do not prove truth or provide a signature."
    },
    "revalidation": {
      "trigger": "A saved purchase does not recheck the source or buyer configuration.",
      "specific_watch": "Recheck the pinned specification against the selected scheme, network, provider version and buyer evidence before relying on a current outcome."
    },
    "buyer_relevance": "Prevent fee sponsorship from authorising an incompletely inspected account set.",
    "refusal_conditions": [
      "Do not treat unresolved accounts as safe or absent."
    ]
  },
  "niche": {
    "niche_id": "agent-authority-action-evidence",
    "label": "Agent Authority & Action Evidence",
    "classification_id": "payments",
    "classification_label": "Agent Payments, Authority & Transaction Evidence",
    "topic_id": "payments",
    "buyer_intent": "Prevent fee sponsorship from authorising an incompletely inspected account set.",
    "comparison_role": "supplementary_discovery"
  },
  "paid_access_note": "The full published answer and boundaries are free. Paid access saves the selected route and source versions, with an unsigned receipt when purchased. Preview coverage before paying. Fresh research, bespoke assessment and protected evidence are excluded.",
  "service_route": {
    "request_guide": "/varexis-index/request.html",
    "request_workflow": "/varexis-index/request-workflow.json",
    "service_id": "single_request",
    "service_routes_url": "/varexis-index/service-routes.json",
    "payment_required": true,
    "availability_endpoint": "/api/index/capabilities",
    "operational_status": "AUTOMATIC_SERVICE_CAPABILITIES_GATED",
    "checkout_url": "/index-access"
  },
  "authority_boundary": "VAREXIS-INDEX informs evidence reliance. It does not provide advice, certification, deployment authority, security assurance, production approval, or guarantee.",
  "human_page": "/varexis-index/catalog.html#x402-solana-address-lookup-fail-closed",
  "machine_readable_record": "/varexis-index/records/x402-solana-address-lookup-fail-closed.json"
}