Evidence row 71588

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://bess-x402.onrender.com/v1/power/uk-carbon"
    ]
  ],
  "name": "UK Grid Carbon Intensity",
  "owner_address": "0x1129a6bb9c6165ff07fdc509c107b522ca0e1871",
  "raw": {
    "accepts": [
      {
        "amount": "2000",
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "maxTimeoutSeconds": 300,
        "network": "eip155:8453",
        "payTo": "0x1129A6BB9C6165FF07fdC509c107B522CA0e1871",
        "scheme": "exact"
      },
      {
        "amount": "2000",
        "asset": "0x3c499c542cEF5E3811e1192ce70d8cC03d5c3359",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "maxTimeoutSeconds": 300,
        "network": "eip155:137",
        "payTo": "0x1129A6BB9C6165FF07fdC509c107B522CA0e1871",
        "scheme": "exact"
      },
      {
        "amount": "2000",
        "asset": "0xaf88d065e77c8cC2239327C5EDb3A432268e5831",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "maxTimeoutSeconds": 300,
        "network": "eip155:42161",
        "payTo": "0x1129A6BB9C6165FF07fdC509c107B522CA0e1871",
        "scheme": "exact"
      }
    ],
    "description": "Great Britain electricity carbon intensity (gCO2/kWh) now, nationally or for a postcode region, with the generation mix (wind, gas, nuclear, solar, imports) and a half-hourly forecast up to 48h including the lowest-carbon slot. Use to schedule EV charging, heat pumps or compute jobs.",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "method": "GET",
            "queryParams": {
              "hours": 4,
              "postcode": "M1 1AE"
            },
            "type": "http"
          },
          "output": {
            "example": {
              "current": {
                "from": "2026-10-22T06:00Z",
                "gco2_per_kwh": 9,
                "generation_mix_pct": {
                  "biomass": 0,
                  "coal": 0,
                  "gas": 2.3,
                  "hydro": 0,
                  "imports": 8.8,
                  "nuclear": 34.9,
                  "other": 0,
                  "solar": 0,
                  "wind": 54
                },
                "index": "very low",
                "to": "2026-10-22T06:30Z"
              },
              "dno_region": "Electricity North West",
              "forecast_half_hourly": [
                {
                  "from": "2026-10-22T06:30Z",
                  "gco2_per_kwh": 5,
                  "index": "very low"
                },
                {
                  "from": "2026-10-22T07:00Z",
                  "gco2_per_kwh": 11,
                  "index": "very low"
                }
              ],
              "lowest_carbon_slot": {
                "from": "2026-10-22T06:30Z",
                "gco2_per_kwh": 5,
                "index": "very low"
              },
              "postcode": "M1",
              "region": "North West England",
              "source": "NESO Carbon Intensity API (CC BY 4.0)"
            },
            "type": "json"
          }
        },
        "schema": {
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "properties": {
            "input": {
              "additionalProperties": false,
              "properties": {
                "method": {
                  "enum": [
                    "GET",
                    "HEAD",
                    "DELETE"
                  ],
                  "type": "string"
                },
                "queryParams": {
                  "properties": {
                    "hours": {
                      "description": "Forecast hours (1-48)",
                      "type": "integer"
                    },
                    "postcode": {
                      "description": "GB postcode or outward code (optional)",
                      "type": "string"
                    }
                  },
                  "required": [],
                  "type": "object"
                },
                "type": {
                  "const": "http",
                  "type": "string"
                }
              },
              "required": [
                "type",
                "method"
              ],
              "type": "object"
            },
            "output": {
              "properties": {
                "example": {
                  "type": "object"
                },
                "type": {
                  "type": "string"
                }
              },
              "required": [
                "type"
              ],
              "type": "object"
            }
          },
          "required": [
            "input"
          ],
          "type": "object"
        }
      }
    },
    "lastUpdated": "2026-10-23T12:42:22.859Z",
    "quality": {
      "l30DaysTotalCalls": 2,
      "l30DaysUniquePayers": 2,
      "lastCalledAt": "2026-10-23T12:42:22.624Z"
    },
    "resource": "https://bess-x402.onrender.com/v1/power/uk-carbon",
    "serviceName": "UK Grid Carbon Intensity",
    "tags": [
      "energy",
      "carbon",
      "uk",
      "grid",
      "sustainability"
    ],
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "Great Britain electricity carbon intensity (gCO2/kWh) now, nationally or for a postcode region, with the generation mix (wind, gas, nuclear, solar, imports) and a half-hourly forecast up to 48h including the lowest-carbon slot. Use to schedule EV charging, heat pumps or compute jobs."
}

What the leaf hashes

{"body":"df94c079b4c4125a27234489b6d95865dadd02d3cf7448bfae61e1a6b35f24f7","id":71588,"kind":"listing","method":"baseline/1","observed_us":1793025482986087,"prev":null,"subject":"x402_bazaar:https://bess-x402.onrender.com/v1/power/uk-carbon","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. 0xb2d82846d58e845b80b73fd0b0cb450d27a6ca4dc8adca33739747c04102b7ec
2. 0x69855ed831262f54924e95ee0d06fb798869d170de312ed80ac5b7f3dcd06cdd
3. 0xb4faa14d57eff9777ba322596522eb8ebe18b1e6d0a52412ad04ae952906792a
4. 0x3ca220f6d0dec56bea90196e33538951ef80cd915abd6c668a30b5014b8ed71d
5. 0x8e8e93df257c51d4eaa774fcc0012f33eb015d928f3ec36ca7deeca45e7e7086
6. 0xd8eaa27e58d927911c9f222bbb1ef6b367665bbc99c2ac63d3f75c7348004ba3
7. 0xf29700e62bfcc32e5f1af40f7d3d4b560f56dfc28c092022acf096b1b2d2eb54
8. 0xf6aa98e1309bbaf69b6d0a838ef2b8e792bedc72c2cc2126e04055bbace6000e
9. 0x8f46605daaf73ba32b5916a571f6625fd668b00d695efb0a793f8c19f745d64d
10. 0x34826d27a00fb6f2649b492e5ca5ff6025211b9bda757487c3351c0e533593f3
11. 0x08b0ee375f7c28afd23e265e3e1bed91ba37304e42eafa665ef4a7f785b3e7bf
12. 0x3d6ec9d5ef8daa604601742088e213da0a439db6eff6ce50ec3ffb264a60ddd3
13. 0x3b1c0e225d1b1cb24cd5d5ea4af2de20ed68a1eaf8b61924ed1b81e4b9cf7e39
14. 0x083427e39db4dd470662401f6db5db8fadf084fc4274cf8621b368416952b78b
15. 0x1a74ed3b3756b9cd946da49701bcec120ec88645013da99fa9eea60b39e1a570
16. 0x123ec8bee20ddc55223eeef5a4f4d6c4b6416515adbb911c56759f5cde56e452
17. 0xd0651cb9bc8155eb52b5247d506e74b8a935057dc190ba52091702ac25ed3a40
18. 0x9a9024edb5069d88a324facb310a5ce8e495214bbaa968f077bede437390194f
19. 0x9b9ce5b74b9bab5121612ef6b64920a8d453cbf311096a423eef9702747e868a

Day root

0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8

Chained

0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a

Published

On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae