Evidence row 64257

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://agri.halowerk.com/v1/carbon-capture"
    ]
  ],
  "name": "agri.halowerk.com/v1/carbon-capture",
  "owner_address": "0x2880edfff13100677bf97a3cbdf3bc34771c4e5e",
  "raw": {
    "accepts": [
      {
        "amount": "3000",
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "currency": "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",
        "recipient": "0x2880EdfFF13100677Bf97A3CBdF3Bc34771C4E5E",
        "scheme": "exact"
      }
    ],
    "description": "Converts area, sampling depth, bulk density and initial/final organic-carbon mass fractions into stock estimates and a gross CO2-equivalent difference. This is a simple stock-difference calculation; it does not establish additionality, permanence, leakage, sampling representativeness, credit eligibility or verified carbon removal.",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "body": {
              "area_hectares": 12,
              "bulk_density_kg_per_m3": 1320,
              "final_organic_carbon_percent": 2.05,
              "initial_organic_carbon_percent": 1.8,
              "sampling_depth_cm": 30
            },
            "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": {
                    "area_hectares": {
                      "maximum": 100000000,
                      "minimum": 0.0001,
                      "type": "number"
                    },
                    "bulk_density_kg_per_m3": {
                      "maximum": 5000,
                      "minimum": 1,
                      "type": "number"
                    },
                    "final_organic_carbon_percent": {
                      "maximum": 100,
                      "minimum": 0,
                      "type": "number"
                    },
                    "initial_organic_carbon_percent": {
                      "maximum": 100,
                      "minimum": 0,
                      "type": "number"
                    },
                    "sampling_depth_cm": {
                      "maximum": 1000,
                      "minimum": 0.1,
                      "type": "number"
                    }
                  },
                  "required": [
                    "area_hectares",
                    "sampling_depth_cm",
                    "bulk_density_kg_per_m3",
                    "initial_organic_carbon_percent",
                    "final_organic_carbon_percent"
                  ],
                  "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": "2026-10-08T05:40:28.888Z",
    "quality": {
      "l30DaysTotalCalls": 4,
      "l30DaysUniquePayers": 4,
      "lastCalledAt": "2026-10-08T05:40:28.665Z"
    },
    "resource": "https://agri.halowerk.com/v1/carbon-capture",
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "Converts area, sampling depth, bulk density and initial/final organic-carbon mass fractions into stock estimates and a gross CO2-equivalent difference. This is a simple stock-difference calculation; it does not establish additionality, permanence, leakage, sampling representativeness, credit eligibility or verified carbon removal."
}

What the leaf hashes

{"body":"e28a87fea68d6ee538c239e06591dfeb5c11db081c4afa9a40407eb0b5af7168","id":64257,"kind":"listing","method":"baseline/1","observed_us":1793025456380459,"prev":null,"subject":"x402_bazaar:https://agri.halowerk.com/v1/carbon-capture","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. 0xdf854c57d6438019cbc40cbd701b154160516fd18fd6c3ccf37e74971683375c
2. 0xbb8d167c63d5d6dd730f9403c9208f14a02a1da44c44703c03080c19f1a821df
3. 0xb112a5a25c9a5b5dd911d2e7de6e29e2abe8a6f2ba4303adc1b90371846074a8
4. 0xf10500965c20768711591825e920bbbc39c5b1c716f28f5c033d8242bb926d11
5. 0xbdb35538f5f5266b874aa1372ecde4c44bdf167da7ea77dce551f939a1aed54a
6. 0xba97e62e6f638a3c461ab2acc09228099bd2ac4505a5910e44c50972e5922127
7. 0x3fb45396abc672bfebc4fe092719e66df626770bf913ae0afaa94b3a4292d4d7
8. 0x0a1c6d3e0c6653f56b2ae5018212dfe76399c98a41e4f7a3a5bfdc01110920f6
9. 0x3830eb775e688eed07a1723431045777b46580e6959e9ce587f21cb3b8015b8e
10. 0x31ae1db8a7234b94d9fe5367527c887819eae31f8682d2506d2e71c84c07ccd6
11. 0x81e0a64a684968fee123ac8017e882fda3952628b73684e4b974157cf7552f06
12. 0x1cde596bd397df62b2525df79e5a761af7d1a292cbcfd283ea8977aecf9334e7
13. 0x3fcdf7fa32ccefe771eb57ae3015142065d64e3ce732fea7d11b9a3c99dde44f
14. 0x0b7541c75cc482a7134110311d7dbd02095d969ba21177de9b21a52a55981718
15. 0x6dc40f983a3840a0ad927a9ca17f4ff1e3b649a6c735e2a09b140db7c2caf13b
16. 0x703f95866af09c5e5d6ead7411e9a10f964a41a2aff64d4a55ff0053c023a023
17. 0xd0651cb9bc8155eb52b5247d506e74b8a935057dc190ba52091702ac25ed3a40
18. 0x9a9024edb5069d88a324facb310a5ce8e495214bbaa968f077bede437390194f
19. 0x9b9ce5b74b9bab5121612ef6b64920a8d453cbf311096a423eef9702747e868a

Day root

0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8

Chained

0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a

Published

On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae