{
  "schema": "varexis-index-free-publication-preview/1",
  "catalogue_version": "pub-1-tranche-51-v1",
  "route_id": "agentic_reviewed_x402_solana_transfer_deduplication_access_replay",
  "record_id": "VXI-EXT-PROCUREMENT-X402-SOLANA-TRANSFER-DEDUPLICATION-ACCESS-REPLAY-01-v1",
  "question": "Does Solana transaction deduplication alone prevent repeated x402 resource access?",
  "answer": "The reviewed binding describes a settlement race in which repeated submissions can receive successful responses although the chain executes the transfer once. It recommends tracking in-flight payloads to reject duplicate settlements. Chain-level transfer deduplication and application-level resource access are separate controls.",
  "records": [
    {
      "record_id": "VXI-EXT-PROCUREMENT-X402-SOLANA-TRANSFER-DEDUPLICATION-ACCESS-REPLAY-01-v1",
      "url": "/varexis-index/records/x402-solana-transfer-deduplication-access-replay.json",
      "content_sha256": "831e4af91bd1679c6b82d25c4fc57d6adbfc34e03023be2ad7ea23fc34306be7",
      "evidence": {
        "schema": "varexis-public-evidence-record/0.3",
        "generated_at_utc": "2026-10-24T21:35:02.243Z",
        "record_id": "VXI-EXT-PROCUREMENT-X402-SOLANA-TRANSFER-DEDUPLICATION-ACCESS-REPLAY-01-v1",
        "record_kind": "external_reference",
        "title": "x402 Solana transfer replay and duplicate access",
        "system": "x402 Foundation",
        "evidence_family": "vendor_evidence_review",
        "index_status": "PUBLIC_SAFE_SOURCE_REVIEW",
        "evidence_state": "PRIMARY_DOCUMENTATION_REVIEW_ONLY",
        "canonical_question": "Does Solana transaction deduplication alone prevent repeated x402 resource access?",
        "near_questions": [
          "Can one Solana transfer unlock several x402 requests?",
          "Does chain deduplication enforce x402 entitlement uniqueness?",
          "Why track in-flight x402 settlement payloads?",
          "Can duplicate Solana submissions return multiple success responses?"
        ],
        "supported_claims": [
          {
            "claim": "The reviewed binding describes a settlement race in which repeated submissions can receive successful responses although the chain executes the transfer once. It recommends tracking in-flight payloads to reject duplicate settlements. Chain-level transfer deduplication and application-level resource access are separate controls.",
            "reliance": "DOCUMENTED_CAPABILITY_ONLY"
          }
        ],
        "not_demonstrated_claims": [
          "Independent verification of payment, delivery or deployed controls",
          "No multi-instance deployment or deduplication storage was tested.",
          "Buyer deployment testing, live runtime enforcement, certification or permission to act",
          "Expanded capabilities or licences for existing INDEX executables"
        ],
        "public_summary": "The reviewed binding describes a settlement race in which repeated submissions can receive successful responses although the chain executes the transfer once. It recommends tracking in-flight payloads to reject duplicate settlements. Chain-level transfer deduplication and application-level resource access are separate controls.",
        "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-TRANSFER-DEDUPLICATION-ACCESS-REPLAY-01-v1",
          "candidate_record_sha256": "6d8c43d4f666aea66633d5ded0dd8d5544ac28f08b6d3b1def9eac3d3b37ed16",
          "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 describes a settlement race in which repeated submissions can receive successful responses although the chain executes the transfer once. It recommends tracking in-flight payloads to reject duplicate settlements. Chain-level transfer deduplication and application-level resource access are separate controls.",
          "required_buyer_context": "Submitted transaction payload identity; Concurrent settlement and response records; Resource admission and deduplication state. 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": "Does Solana transaction deduplication alone prevent repeated x402 resource access?",
          "documented_statement": {
            "status": "documented",
            "statement": "The reviewed binding describes a settlement race in which repeated submissions can receive successful responses although the chain executes the transfer once. It recommends tracking in-flight payloads to reject duplicate settlements. Chain-level transfer deduplication and application-level resource access are separate controls.",
            "source_ids": [
              "x402-svm"
            ]
          },
          "review_inference": {
            "status": "review_inference",
            "statement": "Avoid granting several paid operations against a single transfer. This is a review decision, not an observed buyer result.",
            "source_ids": [
              "x402-svm"
            ]
          },
          "buyer_evidence_required": [
            "Submitted transaction payload identity",
            "Concurrent settlement and response records",
            "Resource admission and deduplication state"
          ],
          "review_condition": {
            "status": "varexis_review_policy",
            "statement": "Do not infer one resource delivery from one on-chain transfer."
          },
          "unknowns": "No multi-instance deployment or deduplication storage was tested.",
          "unknown_finding": {
            "status": "unknown",
            "statement": "No multi-instance deployment or deduplication storage was tested."
          },
          "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": "Avoid granting several paid operations against a single transfer.",
            "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": "Avoid granting several paid operations against a single transfer.",
          "refusal_conditions": [
            "Do not infer one resource delivery from one on-chain transfer."
          ]
        },
        "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": "Avoid granting several paid operations against a single transfer.",
          "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-transfer-deduplication-access-replay",
        "machine_readable_record": "/varexis-index/records/x402-solana-transfer-deduplication-access-replay.json"
      }
    }
  ],
  "access": {
    "mode": "exact_http_only",
    "payment_required": false,
    "purchase_url": null,
    "mcp_preview_available": false,
    "paid_saved_retrieval_available": false,
    "natural_language_search_qualified": false
  },
  "boundary": "Catalogue additions are available free through the exact HTTP JSON links below. Enhanced natural-language discovery is not yet qualified for these records. They are outside MCP search, MCP preview and paid saved retrieval. No search qualification, executable capability or entitlement is added.",
  "content_sha256": "ed58b706e2757712424324f5bde874f0b4f86e474a5acd6627d036ad3b8fb872"
}
