Evidence row 548179

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://pjm-nowcast-production.up.railway.app/v1/nowcast/spreads"
    ]
  ],
  "name": "pjm-nowcast",
  "owner_address": "0x34cfb8bdbf16e4484b7da0ed31deed5771b16c8f",
  "raw": {
    "accepts": [
      {
        "amount": "20000",
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "maxAmountRequired": "20000",
        "maxTimeoutSeconds": 60,
        "network": "eip155:8453",
        "payTo": "0x34cfb8bdbf16e4484b7da0ed31deed5771b16c8f",
        "price": "$0.02",
        "scheme": "exact"
      },
      {
        "amount": "20000",
        "asset": "USDC",
        "maxAmountRequired": "20000",
        "maxTimeoutSeconds": 60,
        "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
        "payTo": "DCi9X5mmacNGLeJvCw9fdWgX3G8V4QquDn4EuXATkcYr",
        "price": "$0.02",
        "scheme": "exact"
      }
    ],
    "description": "Zone-level LMP spread table for the latest print. No history dump.",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "body": {},
            "bodyType": "json",
            "method": "POST",
            "type": "http"
          },
          "output": {
            "example": {
              "ageSeconds": 120,
              "asOf": "2026-10-09T18:00:00-04:00",
              "lastP05": 41,
              "lastP95": 46.1,
              "lastSpread": 5.1,
              "unit": "USD/MWh",
              "zones": {
                "AECO": 42,
                "BGE": 46,
                "PEPCO": 44
              }
            },
            "type": "json"
          }
        },
        "schema": {
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "properties": {
            "input": {
              "additionalProperties": false,
              "properties": {
                "body": {
                  "properties": {},
                  "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"
            },
            "output": {
              "properties": {
                "example": {
                  "description": "Zone-level LMP spread table for the latest print. No history dump.",
                  "properties": {
                    "ageSeconds": {
                      "type": "integer"
                    },
                    "asOf": {
                      "type": "string"
                    },
                    "lastP05": {
                      "type": [
                        "number",
                        "null"
                      ]
                    },
                    "lastP95": {
                      "type": [
                        "number",
                        "null"
                      ]
                    },
                    "lastSpread": {
                      "type": [
                        "number",
                        "null"
                      ]
                    },
                    "stale": {
                      "type": "boolean"
                    },
                    "unit": {
                      "type": "string"
                    },
                    "zones": {
                      "type": "object"
                    }
                  },
                  "type": "object"
                },
                "type": {
                  "type": "string"
                }
              },
              "required": [
                "type"
              ],
              "type": "object"
            }
          },
          "required": [
            "input"
          ],
          "type": "object"
        }
      }
    },
    "lastUpdated": "2026-10-27T13:00:36.099Z",
    "quality": {
      "l30DaysTotalCalls": 4,
      "l30DaysUniquePayers": 1,
      "lastCalledAt": "2026-10-27T13:00:35.884Z"
    },
    "resource": "https://pjm-nowcast-production.up.railway.app/v1/nowcast/spreads",
    "serviceName": "pjm-nowcast",
    "tags": [
      "pjm",
      "nowcast",
      "spread",
      "zonal",
      "lmp"
    ],
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "Zone-level LMP spread table for the latest print. No history dump."
}

What the leaf hashes

{"body":"8391c2745e442d70f769d2cc4ed32665b495e1e2ed71b3a7213e03748e242d6d","id":548179,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1793133280836442,"prev":56444,"subject":"x402_bazaar:https://pjm-nowcast-production.up.railway.app/v1/nowcast/spreads","subject_kind":"source_record"}

Proof

Fold these into the leaf in order, hashing each sorted pair with keccak256, to reach the root of 2026-10-27 (273461 rows).

1. 0x4bb63445efffdb522cf0abedd2437c82eac58f0410c8aae03160ff07f7499b31
2. 0xaa90b1048f6679fd2acb3c9493fe06f16ac31d6ebc0db14579fea38fec9c242a
3. 0xc25384f3441d37ad5a1a3588bdd5df3b8544966ef3921820b1cd3b9fb9a8a70c
4. 0x05611bc1e57be228a9caf77bdee881650d20d8fb0e3d49cdc78f8b8d76aa939b
5. 0x7b72030c77a5cd6131aed39622fa88b422448604f3c300897a9d4116dec6a20a
6. 0x8f905a4f94a94c27b516ff5f6399b4a7249953aac55c4602c4ed522e8e03847b
7. 0xbf6942758e11d1795060222a05b21faa6ef3e21af65ec0fe7ffc8300d6098f12
8. 0xbbc51c0c71fdfd2906d30ec179076a335dfc7478245a45ccb33f490faaaf77ae
9. 0x4cde6f0a82d51fa93b887c446d0b5dad4b690115ace2407a581b69e190cd2a42
10. 0xc5c8c1cab44dcac92464fe5056ed0cd782b104eaed78c431f44ecca1467a48a1
11. 0x5b15539a9e45c30d985cffa0f43853909d4e3a207bff9b6e3e35303e52a3c2d2
12. 0xf5ad7dee20c9ad48ff75cc443e6c6ae3a718321f07b826d581afdb243e59305f
13. 0x150dc531eedad3837a4be47dd0bf1a84bf98feb63216c125982425fda525a3fd
14. 0x80ede9e5d428e39db26928b1d08254ff1241f1d7e091fd2e57130fbb4423162b
15. 0x2c117b27721eea45f6590fbccb471d21a7b0b079a53f089ecb300c63bdb3aebf
16. 0x3ed50f053eca72dfd3a9d45a11935240bfe691e57835c367ddebe2cbc49efe9d
17. 0x0e01aa9525097570a6edaf32bfc959de57bf5c24317cf10c0716affea85ca60d
18. 0xa20d48798a34aba12eb9c7297722982d910f06c148f5e27ac59307422964a585
19. 0x9fc354c0ea3efc3f1b6548bb77ea902a50f2c9647647ea61592efce2bd795699

Day root

0xdd77e5e99da32c3f154180d63e3c3e6fe11e896a2c6896412ef6b5c4bcf7e795

Chained

0x23bb4dfd09f55c15ac3962f53578e02c6114d5bfd9bb451cf8794fb6e2817ef4

Published

On Arc Testnet, block 69414147: 0xb2ebd83aafeb765a0ce66e76aefb133ed06606c98038fd56191e2bcd1dcb77b4