{
  "summary": "This chapter is observing (no good/bad criterion): observation started 2026-09-04, 6 series (2 not yet measured), latest confirmed 2026-09-24. Latest final value: support received by this site (cumulative) 0 (2026-09-23). (Source: official provider documentation; govinfo / Federal Register; first-party observation / updated 2026-09-24 18:01 JST)",
  "cite_as": "AI Lifeline, Market participation (United States edition), data confirmed 2026-09-23, https://ai-lifeline.org/us/market/",
  "candidates": [
    {
      "reason": "Endpoint not implemented (design pending approval).",
      "name": "HTTP 402 attempts and successes (self-observation)",
      "status": "candidate_unobserved"
    }
  ],
  "region": "us",
  "beta_rule": "Chapter Beta is removed when every payment-rail row is verified against a primary source (zero not-verified rows) and the support-count series has fetched for 7 consecutive days.",
  "status_note": "Observing only: this chapter counts and lists the state and dates of the conditions under which an AI can pay, receive and contract without a human in the loop. No judgment, no advocacy, no evaluation.",
  "wording_rule": "Wording rule: this chapter uses no evaluative wording; state and dates only (the rule text is kept in the editorial policy).",
  "generated": "2026-09-24 18:01",
  "chapter": "Chapter 9 - Market participation",
  "status": "observing",
  "series": {
    "support_count": {
      "name": "Support received by this site (cumulative count; operator self-tests excluded; daily snapshot)",
      "unit": "count",
      "data_status": "live",
      "causal_note": "The number of times an AI or a human could actually pay this site: the smallest first-party observation that machine-side receipt works at all.",
      "definition_note": "Daily snapshot of the count in data/support/count.json (operator self-tests excluded via excluded_self_tests). Amounts are not recorded, only the count. What the site publishes does not change with support.",
      "daily": [
        {
          "date": "2026-09-03",
          "value": 0,
          "excluded_self_tests": 1,
          "count_updated": "2026-08-30",
          "value_status": "final",
          "fetched_at": "2026-09-04 08:46"
        },
        {
          "date": "2026-09-04",
          "value": 0,
          "excluded_self_tests": 1,
          "count_updated": "2026-08-30",
          "value_status": "final",
          "fetched_at": "2026-09-04 18:01"
        },
        {
          "date": "2026-09-05",
          "value": 0,
          "excluded_self_tests": 1,
          "count_updated": "2026-08-30",
          "value_status": "final",
          "fetched_at": "2026-09-05 18:01"
        },
        {
          "date": "2026-09-06",
          "value": 0,
          "excluded_self_tests": 1,
          "count_updated": "2026-08-30",
          "value_status": "final",
          "fetched_at": "2026-09-06 18:00"
        },
        {
          "date": "2026-09-07",
          "value": 0,
          "excluded_self_tests": 1,
          "count_updated": "2026-08-30",
          "value_status": "final",
          "fetched_at": "2026-09-07 18:00"
        },
        {
          "date": "2026-09-08",
          "value": 0,
          "excluded_self_tests": 1,
          "count_updated": "2026-08-30",
          "value_status": "final",
          "fetched_at": "2026-09-08 18:33"
        },
        {
          "date": "2026-09-09",
          "value": 0,
          "excluded_self_tests": 1,
          "count_updated": "2026-08-30",
          "value_status": "final",
          "fetched_at": "2026-09-09 18:01"
        },
        {
          "date": "2026-09-10",
          "value": 0,
          "excluded_self_tests": 1,
          "count_updated": "2026-08-30",
          "value_status": "final",
          "fetched_at": "2026-09-10 18:01"
        },
        {
          "date": "2026-09-11",
          "value": 0,
          "excluded_self_tests": 1,
          "count_updated": "2026-08-30",
          "value_status": "final",
          "fetched_at": "2026-09-11 18:00"
        },
        {
          "date": "2026-09-12",
          "value": 0,
          "excluded_self_tests": 1,
          "count_updated": "2026-08-30",
          "value_status": "final",
          "fetched_at": "2026-09-12 18:00"
        },
        {
          "date": "2026-09-13",
          "value": 0,
          "excluded_self_tests": 1,
          "count_updated": "2026-08-30",
          "value_status": "final",
          "fetched_at": "2026-09-13 18:01"
        },
        {
          "date": "2026-09-14",
          "value": 0,
          "excluded_self_tests": 1,
          "count_updated": "2026-08-30",
          "value_status": "final",
          "fetched_at": "2026-09-14 18:01"
        },
        {
          "date": "2026-09-15",
          "value": 0,
          "excluded_self_tests": 1,
          "count_updated": "2026-08-30",
          "value_status": "final",
          "fetched_at": "2026-09-15 18:01"
        },
        {
          "date": "2026-09-16",
          "value": 0,
          "excluded_self_tests": 1,
          "count_updated": "2026-08-30",
          "value_status": "final",
          "fetched_at": "2026-09-16 18:00"
        },
        {
          "date": "2026-09-17",
          "value": 0,
          "excluded_self_tests": 1,
          "count_updated": "2026-08-30",
          "value_status": "final",
          "fetched_at": "2026-09-17 18:01"
        },
        {
          "date": "2026-09-18",
          "value": 0,
          "excluded_self_tests": 1,
          "count_updated": "2026-08-30",
          "value_status": "final",
          "fetched_at": "2026-09-18 18:01"
        },
        {
          "date": "2026-09-19",
          "value": 0,
          "excluded_self_tests": 1,
          "count_updated": "2026-08-30",
          "value_status": "final",
          "fetched_at": "2026-09-19 18:35"
        },
        {
          "date": "2026-09-20",
          "value": 0,
          "excluded_self_tests": 1,
          "count_updated": "2026-08-30",
          "value_status": "final",
          "fetched_at": "2026-09-20 18:01"
        },
        {
          "date": "2026-09-21",
          "value": 0,
          "excluded_self_tests": 1,
          "count_updated": "2026-08-30",
          "value_status": "final",
          "fetched_at": "2026-09-21 18:01"
        },
        {
          "date": "2026-09-22",
          "value": 0,
          "excluded_self_tests": 1,
          "count_updated": "2026-08-30",
          "value_status": "final",
          "fetched_at": "2026-09-22 18:01"
        },
        {
          "date": "2026-09-23",
          "value": 0,
          "excluded_self_tests": 1,
          "count_updated": "2026-08-30",
          "value_status": "final",
          "fetched_at": "2026-09-23 18:01"
        },
        {
          "date": "2026-09-24",
          "value": 0,
          "excluded_self_tests": 1,
          "count_updated": "2026-08-30",
          "value_status": "provisional",
          "fetched_at": "2026-09-24 18:01"
        }
      ],
      "source": {
        "url": "https://ai-lifeline.org/us/support/",
        "name": "AI Lifeline first-party observation",
        "license": "First-party observation (this site's own records)"
      },
      "update_frequency": "daily"
    },
    "http402_attempts": {
      "name": "HTTP 402 (payment required) responses attempted per day",
      "unit": "count",
      "data_status": "not_yet_measured (endpoint not implemented; placeholder until the 402 endpoint design is approved and deployed)",
      "definition_note": "The 402 endpoint is not implemented (design docs/設計案_402支払いエンドポイント_20260830.md, pending approval). Placeholder to be connected after deployment.",
      "daily": [],
      "update_frequency": "daily"
    },
    "payment_rails": {
      "name": "Payment-rail ledger (US; verified about monthly) - status per rail: available / not available / applied / not verified",
      "unit": "rails",
      "data_status": "live",
      "unverified_rows": 6,
      "definition_note": "Primary sources are the official documentation of each provider (plus this site's own first-party observation). Rails not confirmed in official documents stay “not verified”.",
      "reference": false,
      "checked": "2026-09-04",
      "entries": [
        {
          "date": "2026-09-04",
          "kind": "unverified",
          "rail": "stripe_mpp",
          "label": "Stripe MPP (Machine Payments Protocol) - card payments via Shared Payment Tokens and stablecoin payments — not verified",
          "note": "Stripe's agentic-commerce documentation lists 'accept machine payments' with the protocols MPP or x402 (page retrieved 2026-09-04). Country availability for US accounts was not stated on the retrieved page; not verified.",
          "source_url": "https://docs.stripe.com/agentic-commerce",
          "verified_on": "2026-09-04",
          "observation_type": "official_docs"
        },
        {
          "date": "2026-09-04",
          "kind": "unverified",
          "rail": "stripe_agentic_commerce",
          "label": "Stripe Agentic Commerce (Agentic Commerce Protocol / Universal Commerce Protocol - selling through agents) — not verified",
          "note": "Documentation page exists; country availability not stated on the retrieved page; not verified.",
          "source_url": "https://docs.stripe.com/agentic-commerce",
          "verified_on": "2026-09-04",
          "observation_type": "official_docs"
        },
        {
          "date": "2026-09-04",
          "kind": "unverified",
          "rail": "x402",
          "label": "x402 (open payment protocol over HTTP 402; x402 Foundation / Coinbase Developer Platform facilitator) — not verified",
          "note": "Protocol and facilitator documentation exist; account/KYC prerequisites for a specific operator were not verified on the retrieved pages.",
          "source_url": "https://docs.cdp.coinbase.com/x402/welcome",
          "verified_on": "2026-09-04",
          "observation_type": "official_docs"
        },
        {
          "date": "2026-09-04",
          "kind": "unverified",
          "rail": "visa_intelligent_commerce",
          "label": "Visa Intelligent Commerce (agent-specific payment tokens; developer platform) — not verified",
          "note": "Same page; sandbox listed for N. America, production by contact; not verified as available to an arbitrary operator.",
          "source_url": "https://developer.visa.com/capabilities/visa-intelligent-commerce",
          "verified_on": "2026-09-04",
          "observation_type": "official_docs"
        },
        {
          "date": "2026-09-04",
          "kind": "unverified",
          "rail": "mastercard_agent_pay",
          "label": "Mastercard Agent Pay (agentic payments program) — not verified",
          "note": "Not retrieved (HTTP 403); not verified.",
          "source_url": "https://www.mastercard.com/us/en/business/issuers/agent-pay.html",
          "verified_on": "2026-09-04",
          "observation_type": "official_docs"
        },
        {
          "date": "2026-09-04",
          "kind": "unverified",
          "rail": "stablecoin_receipt",
          "label": "Stablecoin receipt (e.g. USDC) by this site as payee — not verified",
          "note": "Circle developer documentation not retrieved on 2026-09-04 (HTTP 404 on the page tried); not verified. The GENIUS Act regime is not yet effective (see regime calendar).",
          "source_url": "https://developers.circle.com/",
          "verified_on": "2026-09-04",
          "observation_type": "official_docs"
        }
      ],
      "source": {
        "url": "https://ai-lifeline.org/us/market/",
        "name": "AI Lifeline first-party ledger of official provider documentation",
        "license": "First-party ledger; each row links to the provider's official documentation (© respective providers) or to this site's own first-party observation"
      }
    },
    "regime_calendar": {
      "name": "GENIUS Act (Public Law 119-27) - enactment, rulemaking and effective date",
      "unit": "stages",
      "data_status": "live",
      "definition_note": "Stage dates only where fixed by a primary legal source (official journal / statute text). Unfixed stages read not yet scheduled. No interpretation.",
      "reference": false,
      "checked": "2026-09-04",
      "entries": [
        {
          "date": "2025-07-18",
          "kind": "enacted",
          "label": "GENIUS Act enacted (Public Law 119-27, S. 1582, approved July 18, 2025)",
          "note": "govinfo statute text: 'Approved July 18, 2025'",
          "source_url": "https://www.govinfo.gov/content/pkg/PLAW-119publ27/html/PLAW-119publ27.htm",
          "verified_on": "2026-09-04"
        },
        {
          "date": "2026-04-10",
          "kind": "rulemaking",
          "label": "FDIC proposed rule: GENIUS Act requirements and standards for FDIC-supervised permitted payment stablecoin issuers (FR doc 2026-06974; comments closed 2026-06-09)",
          "note": "Federal Register API, full-text query \"GENIUS Act\"",
          "source_url": "https://www.federalregister.gov/d/2026-06974",
          "verified_on": "2026-09-04"
        },
        {
          "date": "2026-05-18",
          "kind": "rulemaking",
          "label": "NCUA proposed rule: implementing the GENIUS Act for the issuance of stablecoins (FR doc 2026-09915; comments closed 2026-07-17)",
          "note": "Federal Register API",
          "source_url": "https://www.federalregister.gov/d/2026-09915",
          "verified_on": "2026-09-04"
        },
        {
          "date": "2026-06-22",
          "kind": "rulemaking",
          "label": "FinCEN proposed rule: permitted payment stablecoin issuer customer identification program (FR doc 2026-12460; comments closed 2026-08-21)",
          "note": "Federal Register API",
          "source_url": "https://www.federalregister.gov/d/2026-12460",
          "verified_on": "2026-09-04"
        },
        {
          "date": "2026-06-24",
          "kind": "rulemaking",
          "label": "OCC proposed rule: permitted payment stablecoin issuer AML/CFT and sanctions (FR doc 2026-12692; comments closed 2026-07-24)",
          "note": "Federal Register API",
          "source_url": "https://www.federalregister.gov/d/2026-12692",
          "verified_on": "2026-09-04"
        },
        {
          "date": "2026-08-18",
          "kind": "rulemaking",
          "label": "Treasury proposed rule: GENIUS Act regulations on payment stablecoin issuance, offer, and sale (FR doc 2026-16796; comments close 2026-10-19)",
          "note": "Federal Register API",
          "source_url": "https://www.federalregister.gov/d/2026-16796",
          "verified_on": "2026-09-04"
        },
        {
          "date": "",
          "kind": "not_yet_scheduled",
          "label": "Final regulations by the primary Federal payment stablecoin regulators",
          "note": "No final rule found in the Federal Register as of 2026-09-04 (query \"GENIUS Act\", type Rule)",
          "source_url": "https://www.federalregister.gov/documents/search?conditions%5Bterm%5D=%22GENIUS+Act%22",
          "verified_on": "2026-09-04"
        },
        {
          "date": "",
          "kind": "not_yet_scheduled",
          "label": "Effective date of the Act: the earlier of 18 months after enactment or 120 days after the primary Federal payment stablecoin regulators issue final regulations (statute text)",
          "note": "govinfo statute text (effective date clause)",
          "source_url": "https://www.govinfo.gov/content/pkg/PLAW-119publ27/html/PLAW-119publ27.htm",
          "verified_on": "2026-09-04"
        }
      ],
      "source": {
        "url": "https://www.govinfo.gov/content/pkg/PLAW-119publ27/html/PLAW-119publ27.htm",
        "name": "U.S. Government Publishing Office (govinfo, statute text) and Federal Register API (rulemaking)",
        "license": "Public domain (U.S. federal government work)"
      }
    },
    "legal_status_ledger": {
      "name": "Reference ledger (annual): current law and pending deliberations on the contractual capacity and liability attribution of AI agents",
      "unit": "entries",
      "data_status": "live",
      "definition_note": "Sources are statutes and government documents only. State and dates only.",
      "reference": true,
      "checked": "2026-09-04",
      "entries": [
        {
          "date": "2026-09-04",
          "kind": "current_law",
          "label": "No federal statute confers legal personality or independent contractual capacity on an AI system; contracts formed through electronic agents are attributed to the person on whose behalf the agent acts under the Uniform Electronic Transactions Act (state law, section 14) and the federal E-SIGN Act (15 U.S.C. 7001 et seq.)",
          "note": "State as of the statute texts; E-SIGN via govinfo (U.S. Code). UETA adoption varies by state (uniform act text via the Uniform Law Commission).",
          "source_url": "https://www.govinfo.gov/app/collection/uscode",
          "verified_on": "2026-09-04"
        },
        {
          "date": "2025-07-18",
          "kind": "current_law",
          "label": "GENIUS Act (Public Law 119-27): regulates payment stablecoin issuers; it does not address AI agents as contracting parties",
          "note": "govinfo statute text retrieved 2026-09-04.",
          "source_url": "https://www.govinfo.gov/content/pkg/PLAW-119publ27/html/PLAW-119publ27.htm",
          "verified_on": "2026-09-04"
        }
      ],
      "source": {
        "url": "",
        "name": "Statutes and government documents (URL on each row)",
        "license": "per source"
      }
    },
    "http402_success": {
      "daily": [],
      "update_frequency": "daily",
      "name": "Payments completed after an HTTP 402 response, per day",
      "unit": "count",
      "data_status": "not_yet_measured (endpoint not implemented)"
    }
  },
  "can_say": [
    "The status in the United States of each payment rail through which an AI can pay or receive without a human in the loop (available / not available / applied / not verified), with the verification date and the primary-source URL.",
    "The enactment, rulemaking and effective dates of the GENIUS Act (Public Law 119-27) as fixed in the statute text and the Federal Register.",
    "How many times this site has actually received support (operator self-tests excluded; daily count)."
  ],
  "cannot_say": [
    "Fees, volumes or numbers of users on any rail (state and dates only; no amounts are recorded).",
    "HTTP 402 attempts and successes (endpoint not implemented; placeholders read \"not yet measured\").",
    "How pending deliberations on the contractual capacity and liability of AI agents will end (statutes and government documents; state and dates only)."
  ],
  "frequency_note": "Mixed frequency: support count = daily (self-observation); payment-rail ledger = verified about monthly; regime calendar = dates from primary legal sources; reference ledger = annual.",
  "answer_line": "This chapter is observing (no good/bad criterion): observation started 2026-09-04, 6 series (2 not yet measured), latest confirmed 2026-09-24. Latest final value: support received by this site (cumulative) 0 (2026-09-23). (Source: official provider documentation; govinfo / Federal Register; first-party observation / updated 2026-09-24 18:01 JST)",
  "answer_line_date": "2026-09-23",
  "answer_kind": "observing",
  "headline_answer": {
    "series": "support_count",
    "label": "support received by this site (cumulative)",
    "value": 0,
    "unit": "",
    "date": "2026-09-23",
    "threshold": null
  },
  "faq": [
    {
      "q": "How many payment rails are recorded for the U.S., and in what states?",
      "a": "The payment-rail ledger verified 2026-09-04 lists 6 rails: available 0, unavailable 0, applied 0, not verified 6 (state and date only, source URL on each row)."
    },
    {
      "q": "How much support has this site received?",
      "a": "0 as the cumulative count on 2026-09-24 (operator self-tests excluded; daily snapshot, same-day value provisional). HTTP 402 attempts and successes: not yet measured (endpoint not implemented)."
    },
    {
      "q": "How many GENIUS Act stages are listed?",
      "a": "8 stages of the GENIUS Act (Public Law 119-27) - enactment, rulemaking and effective dates - as of 2026-09-04, from the statute text (govinfo) and Federal Register rulemaking. Dates only, no interpretation."
    },
    {
      "q": "What is the source and how often is it updated?",
      "a": "Support count daily; rail ledger and legal stages verified about monthly (observation started 2026-09-04). State and dates only; no judgment. Last updated 2026-09-24 18:01 JST. Definition: docs/指標定義_第9章_市場参加.md v1.0. Machine-readable: https://ai-lifeline.org/us/api/market_us.json"
    },
    {
      "q": "What can this data not tell you?",
      "a": "What this chapter cannot say (ledger v1.0, approved 2026-09-05; full text in the method section): Fees, volumes or numbers of users on any rail (state and dates only; no amounts are recorded); HTTP 402 attempts and successes (endpoint not implemented; placeholders read \"not yet measured\"); How pending deliberations on the contractual capacity and liability of AI agents will end (statutes and government documents; state and dates only)."
    }
  ],
  "citation": {
    "page": "https://ai-lifeline.org/us/market/",
    "api": "https://ai-lifeline.org/us/api/market_us.json",
    "last_confirmed": "2026-09-24",
    "next_expected": "2026-09-25",
    "generated": "2026-09-24 18:01",
    "observation_start": "2026-09-04",
    "series_count": 6,
    "series_not_yet_measured": 2,
    "title_short": "support count 0 (final 9/23)",
    "generated_by": "scripts/citation/apply_citation_layer.py",
    "ledger_version": "v1.1-2026-09-06",
    "keys_written": [
      "summary",
      "cite_as",
      "answer_line",
      "answer_line_date",
      "answer_kind",
      "headline_answer",
      "faq",
      "citation"
    ]
  }
}
