Evidence row 1040163

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://readfetch.com/v1/diff"
    ]
  ],
  "name": "readfetch.com/v1/diff",
  "owner_address": "0x26c2308adc8fe5ffe6d4183588dd2dd22ed86071",
  "raw": {
    "accepts": [
      {
        "amount": "3000",
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "description": "Stateless change detection: send the hash you hold, get changed/unchanged and a bounded diff. A no-change answer is billable.",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "maxAmountRequired": "3000",
        "maxTimeoutSeconds": 60,
        "mimeType": "application/json",
        "network": "eip155:8453",
        "payTo": "0x26C2308aDC8fe5FFE6d4183588DD2DD22ed86071",
        "resource": "https://readfetch.com/v1/diff",
        "scheme": "exact"
      }
    ],
    "description": "Stateless change detection: send the hash you hold, get changed/unchanged and a bounded diff. A no-change answer is billable.",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "body": {
              "format": "text",
              "url": "https://example.com"
            },
            "bodyType": "json",
            "method": "POST",
            "type": "http"
          },
          "output": {
            "example": {
              "added": [
                "New line"
              ],
              "billed": true,
              "changed": true,
              "diff": "@@ -1 +1 @@\n-Old line\n+New line",
              "hash": "sha256:...",
              "hint": null,
              "removed": [
                "Old line"
              ],
              "status": "changed",
              "status_code": 200,
              "url": "https://example.com/pricing"
            },
            "format": "application/json",
            "type": "json"
          }
        },
        "schema": {
          "$defs": {},
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "properties": {
            "input": {
              "properties": {
                "body": {
                  "properties": {
                    "egress": {
                      "description": "Egress pool to leave through: `direct` (the default route, no proxy) or any pool the operator configured, e.g. `residential` (the home exit) or `local`. Omit to route by host rules.",
                      "title": "Egress",
                      "type": "string"
                    },
                    "format": {
                      "default": "text",
                      "enum": [
                        "text",
                        "markdown"
                      ],
                      "type": "string"
                    },
                    "previous_content": {
                      "description": "Previous text, for an added/removed diff.",
                      "type": [
                        "string",
                        "null"
                      ]
                    },
                    "previous_hash": {
                      "description": "sha256:... from a previous call.",
                      "type": [
                        "string",
                        "null"
                      ]
                    },
                    "timeout_s": {
                      "maximum": 120,
                      "minimum": 1,
                      "type": "number"
                    },
                    "url": {
                      "format": "uri",
                      "type": "string"
                    }
                  },
                  "required": [
                    "url"
                  ],
                  "type": "object"
                },
                "bodyType": {
                  "const": "json"
                },
                "method": {
                  "enum": [
                    "POST"
                  ]
                },
                "type": {
                  "const": "http"
                }
              },
              "required": [
                "type",
                "method",
                "body"
              ],
              "type": "object"
            },
            "output": {
              "properties": {
                "billed": {
                  "type": "boolean"
                },
                "status": {
                  "type": "string"
                },
                "text": {
                  "type": "string"
                },
                "url": {
                  "type": "string"
                }
              },
              "type": "object"
            }
          }
        }
      }
    },
    "lastUpdated": "2026-10-28T22:42:26.218Z",
    "quality": {
      "l30DaysTotalCalls": 2,
      "l30DaysUniquePayers": 1,
      "lastCalledAt": "2026-10-28T22:42:25.922Z"
    },
    "resource": "https://readfetch.com/v1/diff",
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "Stateless change detection: send the hash you hold, get changed/unchanged and a bounded diff. A no-change answer is billable."
}

What the leaf hashes

{"body":"16a7fe7904429466202072061926684c7a55e7ea680d285b54390658d2bdef37","id":1040163,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1793298494936189,"prev":null,"subject":"x402_bazaar:https://readfetch.com/v1/diff","subject_kind":"source_record"}

Proof

Fold these into the leaf in order, hashing each sorted pair with keccak256, to reach the root of 2026-10-29 (242798 rows).

1. 0x7e0481464cd85a155e800d5a75f8559abe579e387517f8c70622d0d10aea5064
2. 0x40ed47fdbe2014df2b00fbc1cea46e5b5d77679b8d74ac7bfb59411e1d65c285
3. 0x2b915adb066f2d705245bd972796f8fa44edf43a3c243ef9e57dfc20831d0364
4. 0x4131a592f0092c224ad66529ba1fe37ff789791646b77a805994b6b60edb30f2
5. 0xf9a802b537b352e2251d1a6b2efd43b54f0914dca3cdff6b546be3638ca0c80a
6. 0xc43288e06e66ebaf11dda10ed03b801aa24c11b3414efba35c0778c0fa3ef76d
7. 0x2910a2162b747ad2d48eb9ad69923756a9dd0507fcf8f36ecd8b1212a3b54a4a
8. 0x9baf1aca11a15d7c9b073eed192aca086871b199f542eaaead0e0efe9e2e6c89
9. 0x4509ca626d85cfc1b97c649b230cd9920ab248f3d2a2e7a8e91c674aebe93c7e
10. 0x7eaf5c8cc3d35533a51b884eee67859bf6e3d0de74705b1bb437c825497c92a4
11. 0xa493465658b9982fa797e28e952161babf4e683984018e4a82a3822f0261e874
12. 0xdd1b7c709bffb72e2b571ed6f40eb082bfc4c4c06db6f551176d357d15cd49ec
13. 0x68daa487f20142b5a274d6f597c5a1b745921627de17f1d6b9dcb7d0a6564bcc
14. 0x8ba80727225153704e2051c6b4fa52b7de16d7f5ad7fa0e39cd779b45b20814d
15. 0xcf94ad18fb19d78b9bda4e21e2e80e6fbf3504f3f83fee3273c11933743525c4
16. 0xe2d603cd6f987214550319ad4fa39952b6098bc5c1b20893b6b80e8d82a79934
17. 0x91f12a2db1e2c1be07cbe4de3981a37a33051a36d3c3eee5a260804add6d1d75
18. 0xd56e61af23709ed9f460471e3c08400c0142ee83e1fd9057e46350d12edf9c07

Day root

0xc050555c6b023f2aefb6536efb9f0760b92c30a0d06c572b7daf63db259ea17c

Chained

0x4cde8bae2042512e1bec11650628f0293556311cc4ea74d99ffddf02b671a7d6

Published

On Arc Testnet, block 69753317: 0x9e85c340732f416e431b111fae72f7624870125f7f379af2732eb6c2ba8cf6a1