Evidence row 121564

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://space.halowerk.com/v1/night-lights-econ"
    ]
  ],
  "name": "space.halowerk.com/v1/night-lights-econ",
  "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": "Fits ordinary least squares to log radiance by year, converts the slope to annual radiance change, and applies a caller-supplied economic elasticity. Night lights are an imperfect proxy affected by sensors, saturation, electrification, outages, policy, and conflict; this is not an official economic statistic or causal estimate.",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "body": {
              "base_economic_index": 100,
              "economic_elasticity": 0.65,
              "observations": [
                {
                  "mean_radiance": 18.4,
                  "year": 2022
                },
                {
                  "mean_radiance": 19.1,
                  "year": 2023
                },
                {
                  "mean_radiance": 20,
                  "year": 2024
                },
                {
                  "mean_radiance": 20.6,
                  "year": 2025
                }
              ]
            },
            "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": {
                    "base_economic_index": {
                      "maximum": 1000000000000000,
                      "minimum": 0.000001,
                      "type": "number"
                    },
                    "economic_elasticity": {
                      "description": "Percent economic-index change per percent radiance change under the caller model.",
                      "maximum": 10,
                      "minimum": -10,
                      "type": "number"
                    },
                    "observations": {
                      "items": {
                        "additionalProperties": false,
                        "properties": {
                          "mean_radiance": {
                            "maximum": 1000000000000000,
                            "minimum": 1e-9,
                            "type": "number"
                          },
                          "year": {
                            "maximum": 2200,
                            "minimum": 1900,
                            "type": "integer"
                          }
                        },
                        "required": [
                          "year",
                          "mean_radiance"
                        ],
                        "type": "object"
                      },
                      "maxItems": 1000,
                      "minItems": 2,
                      "type": "array"
                    }
                  },
                  "required": [
                    "observations",
                    "economic_elasticity",
                    "base_economic_index"
                  ],
                  "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": "2026-10-08T06:13:32.868Z",
    "quality": {
      "l30DaysTotalCalls": 2,
      "l30DaysUniquePayers": 2,
      "lastCalledAt": "2026-10-08T06:13:32.428Z"
    },
    "resource": "https://space.halowerk.com/v1/night-lights-econ",
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "Fits ordinary least squares to log radiance by year, converts the slope to annual radiance change, and applies a caller-supplied economic elasticity. Night lights are an imperfect proxy affected by sensors, saturation, electrification, outages, policy, and conflict; this is not an official economic statistic or causal estimate."
}

What the leaf hashes

{"body":"6f86ed697ccb8c5a2b825179e583114e4c5ce927348bb5c2f9fb92bee6cff005","id":121564,"kind":"listing","method":"baseline/1","observed_us":1793025620075887,"prev":null,"subject":"x402_bazaar:https://space.halowerk.com/v1/night-lights-econ","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. 0xdc69421d1b1e08dd548c36abbc1b25281e094158f9e5a3867944cf93750bcf4b
2. 0x3407a782186ae96a0114d5dc969af6fe9460d890dbaec7bb42570032b12aa64c
3. 0x954b6e1ac958e0f755df3e6ae3d517ed0361d32b9b28213145ea641e32834957
4. 0x3b9ea9ae74e9d83e12cc3eb75d9ee39ca2f7c57728909bc6614d316ce9d400ff
5. 0x2aa211fef7b2164a86957c6d7d3c7bb6b1ea5b572843d9bd19e5bb408505080e
6. 0x0dab7f17e4c44a7538f5a358049c4259f23a38c2f15c7f9e7f1a0bc9d555ac00
7. 0x72260cde6dab6c8a1ec5a33312f73de56cc771bf9d58c7f9fe8252d1b92527c6
8. 0xf146f425b5c4c123e2ccef62dc0bfc64c8b83376b6e0630bd8bb582a4c2af071
9. 0x114b51e779a9893a9c062797f565d930adaae118acd36adedcf5aba14f417cd6
10. 0x8bebe012b01fa4f26d739f04115eebeef40f8c405ae373856c041e988f95cbc8
11. 0x24a78783fa8bfae2806b9bb0fa99cf3d1a7fa7f1795401b4b31767e8a2b2abd7
12. 0x4b7a7525bd11eaa3154ce1b1171d1b54b83370163f39203e230c520e42560c4b
13. 0xa4edde833302b48399053e2519aea1aed1074cd102bf4b553643df1866cce4ec
14. 0x0b7541c75cc482a7134110311d7dbd02095d969ba21177de9b21a52a55981718
15. 0x6dc40f983a3840a0ad927a9ca17f4ff1e3b649a6c735e2a09b140db7c2caf13b
16. 0x703f95866af09c5e5d6ead7411e9a10f964a41a2aff64d4a55ff0053c023a023
17. 0xd0651cb9bc8155eb52b5247d506e74b8a935057dc190ba52091702ac25ed3a40
18. 0x9a9024edb5069d88a324facb310a5ce8e495214bbaa968f077bede437390194f
19. 0x9b9ce5b74b9bab5121612ef6b64920a8d453cbf311096a423eef9702747e868a

Day root

0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8

Chained

0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a

Published

On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae