{
  "data": {
    "title": "x402 growth, decomposed",
    "chain": "base",
    "generated_at_utc": "2026-07-08T06:17:42Z",
    "data_snapshot_max_timestamp": "2026-07-08T06:03:35.116844",
    "source": "SmartFlow Observatory independent ledger of USDC micro-transfers on Base (0.0005-5.0 USDC per transfer)",
    "definitions": {
      "universe": "All USDC micro-transfers (0.0005 to 5.0 USDC) on Base captured by our independent tracker.",
      "bundler": "Transfers whose transaction sender is a known ERC-4337 bundler, i.e. smart-wallet plumbing rather than a person pressing pay.",
      "facilitator": "Transfers settled through a recognized x402 facilitator contract path (is_facilitator_mediated = 1).",
      "wash": "Transfers flagged by our wash-detection rules R1 to R5 (self-pay, burst, dust, loop, channel recycling).",
      "clean_core": "Facilitator-settled transfers with no wash flag, at least 24h old so the wash classifier has had time to run."
    },
    "category_overlap_note": "Categories overlap and do not sum to 100 percent. A bundler-carried transfer can also be wash. Overlaps above 2 percent of universe tx are listed explicitly.",
    "bundler_set": {
      "mode": "n1-classification",
      "count": 210
    },
    "windows": {
      "w30d": {
        "universe": {
          "tx": 26294113,
          "volume_usdc": 14073996.72,
          "payers": 706950
        },
        "bundler": {
          "tx": 1449706,
          "volume_usdc": 1595668.63,
          "payers": 155878,
          "share_tx_pct": 5.51,
          "share_volume_pct": 11.34
        },
        "facilitator": {
          "tx": 4396276,
          "volume_usdc": 208927.2,
          "payers": 32918,
          "share_tx_pct": 16.72,
          "share_volume_pct": 1.48
        },
        "wash": {
          "tx": 17699636,
          "volume_usdc": 6276005.29,
          "payers": 100016,
          "share_tx_pct": 67.31,
          "share_volume_pct": 44.59
        },
        "clean_core": {
          "tx": 423405,
          "volume_usdc": 95444.09,
          "payers": 29837,
          "share_tx_pct": 1.61,
          "share_volume_pct": 0.68
        }
      },
      "w7d": {
        "universe": {
          "tx": 5536712,
          "volume_usdc": 3093463.14,
          "payers": 238679
        },
        "bundler": {
          "tx": 380205,
          "volume_usdc": 369340.98,
          "payers": 53222
        },
        "facilitator": {
          "tx": 624972,
          "volume_usdc": 34137.65,
          "payers": 9340
        },
        "wash": {
          "tx": 3037677,
          "volume_usdc": 1315943.54,
          "payers": 34028
        },
        "clean_core": {
          "tx": 146791,
          "volume_usdc": 17335.26,
          "payers": 7545
        }
      },
      "w7d_prev": {
        "universe": {
          "tx": 7081361,
          "volume_usdc": 3102493.47,
          "payers": 218008
        },
        "bundler": {
          "tx": 321672,
          "volume_usdc": 309701.96,
          "payers": 50189
        },
        "facilitator": {
          "tx": 974683,
          "volume_usdc": 45846.92,
          "payers": 10226
        },
        "wash": {
          "tx": 5002360,
          "volume_usdc": 1332450.51,
          "payers": 34757
        },
        "clean_core": {
          "tx": 143031,
          "volume_usdc": 23022.45,
          "payers": 8904
        }
      }
    },
    "overlaps_30d": {
      "bundler_and_wash": {
        "tx": 575940,
        "volume_usdc": 739654.45,
        "payers": 41746,
        "share_tx_pct": 2.19
      },
      "bundler_and_facilitator": {
        "tx": 207592,
        "volume_usdc": 137269.8,
        "payers": 14652,
        "share_tx_pct": 0.79
      },
      "facilitator_and_wash": {
        "tx": 3910861,
        "volume_usdc": 111905.18,
        "payers": 7386,
        "share_tx_pct": 14.87
      }
    },
    "pending_classification_24h": {
      "tx": 576863,
      "volume_usdc": 309607.53,
      "payers": 55490,
      "note": "Wash flags lag ingest by about a day. Transfers younger than 24h without a flag are pending, not clean."
    },
    "limitations": {
      "universe_scope": "Only micro-USDC transfers between 0.0005 and 5.0 USDC on Base. Larger transfers are out of scope by design.",
      "facilitator_coverage": "is_facilitator_mediated is populated for a subset of the window; 19655805 of 26294113 30d transfers are unclassified, so the facilitator share is a lower bound.",
      "tx_sender_coverage": "tx_sender is missing for 3741000 of 26294113 30d transfers, so the bundler share is a lower bound.",
      "wash_lag": "Wash classification lags ingest by about 24h. The most recent day is reported as pending, not clean.",
      "timestamps": "Timestamps are ingest times (hourly batch), not block times. Day boundaries can shift by up to an hour."
    }
  },
  "seal": {
    "sha256": "a2b4ef8e9f8da54836871d725cd7a1ce830cb454a87baccaef06b0a16b1024ca",
    "recipe": "Take the value of the top-level 'data' key, serialize with python: json.dumps(data, sort_keys=True, separators=(',', ':'), ensure_ascii=False), then sha256 the UTF-8 bytes."
  }
}