Evidence row 121942

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://stat.halowerk.com/v1/carbon-intensity"
    ]
  ],
  "name": "stat.halowerk.com/v1/carbon-intensity",
  "owner_address": "0x2880edfff13100677bf97a3cbdf3bc34771c4e5e",
  "raw": {
    "accepts": [
      {
        "amount": "5000",
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "asset": "USDC",
          "assetTransferMethod": "eip3009",
          "eip712Domain": {
            "chainId": 8453,
            "name": "USD Coin",
            "verifyingContract": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
            "version": "2"
          },
          "name": "USD Coin",
          "network_name": "Base Mainnet",
          "version": "2"
        },
        "maxTimeoutSeconds": 300,
        "network": "eip155:8453",
        "payTo": "0x2880EdfFF13100677Bf97A3CBdF3Bc34771C4E5E",
        "scheme": "exact"
      }
    ],
    "description": "Returns carbon dioxide emissions for one or more countries on three bases at once: per inhabitant, per unit of purchasing-power-adjusted output, and in absolute megatonnes, each with its own period and its trend over the requested window. Keeping the three apart is the point. Per capita answers how heavily a person there burdens the climate; per unit of output answers how efficiently value is produced; absolute answers what actually reaches the atmosphere.",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "body": {
              "countries": [
                "DE"
              ],
              "years": 5
            },
            "bodyType": "json",
            "method": "POST",
            "type": "http"
          }
        },
        "schema": {
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "properties": {
            "input": {
              "additionalProperties": false,
              "properties": {
                "body": {
                  "additionalProperties": false,
                  "properties": {
                    "countries": {
                      "items": {
                        "maxLength": 3,
                        "minLength": 2,
                        "type": "string"
                      },
                      "maxItems": 10,
                      "minItems": 1,
                      "type": "array"
                    },
                    "years": {
                      "default": 15,
                      "maximum": 30,
                      "minimum": 3,
                      "type": "integer"
                    }
                  },
                  "required": [
                    "countries"
                  ],
                  "type": "object"
                },
                "bodyType": {
                  "enum": [
                    "json",
                    "form-data",
                    "text"
                  ],
                  "type": "string"
                },
                "method": {
                  "enum": [
                    "POST",
                    "PUT",
                    "PATCH"
                  ],
                  "type": "string"
                },
                "type": {
                  "const": "http",
                  "type": "string"
                }
              },
              "required": [
                "type",
                "method",
                "bodyType",
                "body"
              ],
              "type": "object"
            }
          },
          "required": [
            "input"
          ],
          "type": "object"
        }
      }
    },
    "lastUpdated": "2026-10-06T12:27:25.639Z",
    "quality": {
      "l30DaysTotalCalls": 1,
      "l30DaysUniquePayers": 1,
      "lastCalledAt": "2026-10-06T12:27:25.222Z"
    },
    "resource": "https://stat.halowerk.com/v1/carbon-intensity",
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "Returns carbon dioxide emissions for one or more countries on three bases at once: per inhabitant, per unit of purchasing-power-adjusted output, and in absolute megatonnes, each with its own period and its trend over the requested window. Keeping the three apart is the point. Per capita answers how heavily a person there burdens the climate; per unit of output answers how efficiently value is produced; absolute answers what actually reaches the atmosphere."
}

What the leaf hashes

{"body":"3f75c726d7bc62d799dba7cb0dc7d30058bffcfc476d15f2c8fa86af41d43a74","id":121942,"kind":"listing","method":"baseline/1","observed_us":1793025620696527,"prev":null,"subject":"x402_bazaar:https://stat.halowerk.com/v1/carbon-intensity","subject_kind":"source_record"}

Proof

Fold these into the leaf in order, hashing each sorted pair with keccak256, to reach the root of 2026-10-26 (296695 rows).

1. 0x4a231a98dc6253583022ca737c665c77928e63c3fa19cc4426345884767332ba
2. 0xa6a0c3f11428a37b260e37fd108c4f851779bb5880e5e695699ca04975cb9f01
3. 0xc5424c65f27e1d469f22190d3467aa80c1d16c6bcba8030b113be0760ec64736
4. 0x2604989ca50f5d96e419c8dbf8d088421c4988746698786d72177fa0c85107e4
5. 0x25e5adfc1d534d0638ec33ac2d29f81c94763effecff82cdf97ec64045748ca9
6. 0x312e282d83e07f33581ecf5605548e1df8c90b26169da48647833f72dbf9ecbe
7. 0x125f8015a8186a05f1d4f2c7f76c2643f1d8b7e195a038a160405bfa8ae59484
8. 0x3e62c56dabcc8f497cc983313cc1cd74bd3c5bc5352923bd7dfdf3862c6c6e64
9. 0x1962b9a6d7d1547f94fc172de26910e173a42a8aab7f7f96a5a9525fcb0ba8b7
10. 0xff35957d30a52fe0e2689931f3ecb8ebbaf5d3e10aea8fff101120a9530edc59
11. 0x36446ee01203fb6b2027599f737b7bdd64e3db182e50230f9c82fff4f67be776
12. 0xee7d5711cd2515f4b08f3e4041d3d56304f9db6bffd82d82746f0f4ea43b8f26
13. 0xb86fa861d04737cb507e721eefbb066d26528fdb6017b1145c18d1223b93ee21
14. 0x88e326a39b26e2c125306c9d3805d14398ace088bba9a2a0aa376b811cfb201a
15. 0x2be1e80e065dd6b2cc75a7142be22225acd144ac975d70bf24b4f01fd76dc497
16. 0x2e6a32eb32761c210560e852405e2f865f958ddbe01027894f8b9c1b3433b9f0
17. 0x9a83be955a206deb65b995adfd92c58fa31c95fbbf926bd199d300e70b08b26d
18. 0x20704208aa6923d6b2450ef74ede87a6e0265d46447926038fe9506e9e154b2d
19. 0x9b9ce5b74b9bab5121612ef6b64920a8d453cbf311096a423eef9702747e868a

Day root

0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8

Chained

0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a

Published

On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae