{
  "tier": "free",
  "delayed_summary": {
    "cvin": "cvin:nv.h200.sxm.141g:3k5b6srn7s2c571v",
    "exists": true,
    "first_observed_at": "2026-11-06T03:50:47.124Z",
    "last_observed_at": "2026-11-06T03:50:47.124Z",
    "observation_count": 2,
    "obs_types": [
      "attestation",
      "declaration"
    ],
    "delayed_window_days": 90,
    "delayed_observations": 0,
    "note": "免费层只提供 90 天延迟摘要与观测计数；完整历史与连续性证明需风控订阅。"
  },
  "cvin": "cvin:nv.h200.sxm.141g:3k5b6srn7s2c571v",
  "exists": true,
  "scope": "device",
  "is_device": true,
  "status": "active",
  "days_since_last_observation": 0,
  "attestation_count": 1,
  "last_attested_at": "2026-11-06T03:50:47.124Z",
  "device_key_bound": true,
  "identity": {
    "level": "L2",
    "evidence_basis": "device_key",
    "scope": "device",
    "is_device": true,
    "can_assert": "设备用自己的密钥签名自证，运营方无法替代设备说话",
    "cannot_assert": "不保证密钥没被物理提取——防的是远程冒充，不是物理拆解",
    "cross_operator": true,
    "usable_for": [
      "持续在押验证",
      "自动理赔触发",
      "无人值守的合规审计"
    ],
    "not_usable_for": [],
    "upgrade": {
      "current": "L2",
      "next": null,
      "how": null,
      "note": "已是最高级；L2 的维护要求是设备持续提交签名证明（间隔 >30 天会退回 stale）"
    },
    "evidence_counts": {
      "M": 0,
      "L0": 0,
      "L1": 1,
      "L2": 1
    }
  },
  "asset": {
    "mfr": "NVIDIA",
    "model": "H200",
    "form": "SXM",
    "mem": "141GB HBM3e"
  },
  "label": "NVIDIA H200 SXM 141GB HBM3e",
  "first_observed_at": "2026-11-06T03:50:47.124Z",
  "last_observed_at": "2026-11-06T03:50:47.124Z",
  "observation_count": 2,
  "obs_types": [
    "attestation",
    "declaration"
  ],
  "regions": [
    "apac-sg"
  ],
  "last_obs_type": "attestation",
  "last_source": "https://attestation.cvin.local/5o4zmyveogx3ce0g",
  "price_observation_usd_h": null,
  "market_quote": null,
  "chain_head": "f1e16cb91bfadc2a8677f71451aee79eeb8c3027dd61a52aa16b9c229d15d763",
  "sources": [
    {
      "platform": "selftest-operator",
      "observations": 1,
      "attribution": null,
      "last_seen": "2026-11-06T03:50:47.124Z"
    },
    {
      "platform": "device-attestation",
      "observations": 1,
      "attribution": null,
      "last_seen": "2026-11-06T03:50:47.124Z"
    }
  ],
  "declared": true,
  "synthetic_ratio": 0,
  "data_quality": {
    "observations": 2,
    "real": 0,
    "synthetic": 0,
    "test": 1,
    "demo": 1,
    "real_share_pct": 0,
    "has_real_observations": false,
    "last_real_observed_at": null,
    "classification_note": "real=公开外部来源且非合成非测试（可作引用依据）；synthetic=演示种子数据（记录层 synthetic:true）；demo=站内自产演示写入（来源域 cvin.local，派生层标记）；test=冒烟/巡检/安全测试写入（E1 只增不减原样保留）"
  },
  "declared_operators": [
    "selftest-operator"
  ],
  "operator_conflict_count": 0,
  "operator_disputed": false,
  "disputes": {
    "count": 0,
    "open": 0,
    "latest_at": null,
    "latest_claim": null,
    "latest_by": null
  },
  "aliases": [],
  "encumbrance": {
    "known": true,
    "has_active_lien": false,
    "active_liens": 0,
    "duplicate_pledge_risk": false,
    "duplicate_pledge_risk_real": false,
    "risk_basis": "none",
    "seed_liens": 0,
    "real_liens": 0,
    "includes_seed_data": false,
    "note": "免费层只暴露风险信号与数量；出借方名单、金额与合同编号属风控订阅（/v1/liens/{cvin}）。seed_liens 为上线时写入的演示留置条数：risk_basis=seed_only 时，这个红旗没有任何真实借贷支撑，不得作为拒贷依据。"
  }
}