Evidence row 1261561

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://readfetch.com/v1/section"
    ]
  ],
  "name": "readfetch.com",
  "owner_address": "0x26c2308adc8fe5ffe6d4183588dd2dd22ed86071",
  "raw": {
    "accepts": [
      {
        "amount": "3000",
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "description": "One heading or one selector instead of the whole page. A heading that is not found returns 200, an empty body and the list of headings that do exist.",
        "extra": {
          "name": "USD Coin",
          "paymentFlow": "authorization",
          "version": "2"
        },
        "maxAmountRequired": "3000",
        "maxTimeoutSeconds": 60,
        "mimeType": "application/json",
        "network": "eip155:8453",
        "payTo": "0x26C2308aDC8fe5FFE6d4183588DD2DD22ed86071",
        "resource": "https://readfetch.com/v1/section",
        "scheme": "exact"
      }
    ],
    "description": "One heading or one selector instead of the whole page. A heading that is not found returns 200, an empty body and the list of headings that do exist.",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "body": {
              "format": "markdown",
              "heading": "Introduction",
              "max_chars": 8000,
              "mode": "render",
              "url": "https://example.com"
            },
            "bodyType": "json",
            "description": "Read one heading or one selector instead of the whole page - ten to a hundred times fewer tokens.",
            "method": "POST",
            "type": "http"
          },
          "output": {
            "description": "One heading or one selector instead of the whole page. A heading that is not found returns 200, an empty body and the list of headings that do exist.",
            "example": {
              "available_headings": [
                "Intro",
                "Authentication",
                "Rate limits"
              ],
              "billed": true,
              "chars": 1204,
              "content_sha256": "...",
              "hint": null,
              "matched": {
                "kind": "heading",
                "label": "Authentication",
                "level": 2
              },
              "status": "success",
              "status_code": 200,
              "text": "## Authentication\n\n...",
              "title": "API",
              "url": "https://docs.example.com/api",
              "used_browser": false
            },
            "format": "application/json",
            "type": "json"
          }
        },
        "schema": {
          "$defs": {},
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "properties": {
            "input": {
              "properties": {
                "body": {
                  "oneOf": [
                    {
                      "required": [
                        "heading"
                      ]
                    },
                    {
                      "required": [
                        "selector"
                      ]
                    }
                  ],
                  "properties": {
                    "egress": {
                      "description": "Exit to leave through: `direct` (this service's own datacentre egress) or `residential` (a residential address pool, for targets that refuse datacentre addresses). Omit to use the default route.",
                      "title": "Egress",
                      "type": "string"
                    },
                    "format": {
                      "default": "markdown",
                      "enum": [
                        "markdown",
                        "text"
                      ],
                      "type": "string"
                    },
                    "heading": {
                      "description": "Case-insensitive, whitespace-normalised.",
                      "example": "Introduction",
                      "type": [
                        "string",
                        "null"
                      ]
                    },
                    "max_chars": {
                      "default": 8000,
                      "maximum": 20000,
                      "minimum": 100,
                      "type": "number"
                    },
                    "mode": {
                      "default": "render",
                      "enum": [
                        "fast",
                        "render"
                      ],
                      "type": "string"
                    },
                    "selector": {
                      "description": "CSS selector; up to 20 matches concatenated.",
                      "type": [
                        "string",
                        "null"
                      ]
                    },
                    "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": {
                "available_headings": {
                  "items": {
                    "type": "string"
                  },
                  "type": "array"
                },
                "billed": {
                  "type": "boolean"
                },
                "chars": {
                  "type": "integer"
                },
                "content_sha256": {
                  "type": "string"
                },
                "hint": {
                  "type": "null"
                },
                "matched": {
                  "properties": {
                    "kind": {
                      "type": "string"
                    },
                    "label": {
                      "type": "string"
                    },
                    "level": {
                      "type": "integer"
                    }
                  },
                  "type": "object"
                },
                "status": {
                  "type": "string"
                },
                "status_code": {
                  "type": "integer"
                },
                "text": {
                  "type": "string"
                },
                "title": {
                  "type": "string"
                },
                "url": {
                  "format": "uri",
                  "type": "string"
                },
                "used_browser": {
                  "type": "boolean"
                }
              },
              "type": "object"
            }
          }
        }
      },
      "readfetch": {
        "llms_txt": "https://readfetch.com/llms.txt",
        "mcp": "https://readfetch.com/mcp",
        "mcp_manifest": "https://readfetch.com/.well-known/mcp.json",
        "openapi": "https://readfetch.com/openapi.json",
        "payment_status": "live",
        "probe": {
          "method": "POST",
          "note": "Free ~400-character preview for the same URL before paying",
          "path": "/v1/probe",
          "price_usd": 0
        },
        "related_endpoints": [
          {
            "path": "/v1/probe"
          },
          {
            "path": "/v1/scrape"
          }
        ],
        "service_manifest": "https://readfetch.com/.well-known/service.json",
        "skill": "https://readfetch.com/SKILL.md",
        "x402_resources": "https://readfetch.com/.well-known/x402-resources.json"
      }
    },
    "iconUrl": "https://res.cloudinary.com/bdb-prod/image/upload/c_fill,ar_1:1,w_256,h_256,f_auto,q_auto/v1793278990/bazaar-icons/a51ede90f06a90b8.png",
    "lastUpdated": "2026-10-30T15:51:42.243Z",
    "quality": {
      "l30DaysTotalCalls": 3,
      "l30DaysUniquePayers": 1,
      "lastCalledAt": "2026-10-30T15:51:41.996Z"
    },
    "resource": "https://readfetch.com/v1/section",
    "serviceName": "readfetch.com",
    "tags": [
      "data",
      "docs",
      "heading",
      "section",
      "selector"
    ],
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "One heading or one selector instead of the whole page. A heading that is not found returns 200, an empty body and the list of headings that do exist."
}

What the leaf hashes

{"body":"421fe25d0a1c37c1638fa941e1a74cf6d9381e2820f906203d0b7a2ddf47f5f9","id":1261561,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1793385513273129,"prev":1040164,"subject":"x402_bazaar:https://readfetch.com/v1/section","subject_kind":"source_record"}

Proof

Fold these into the leaf in order, hashing each sorted pair with keccak256, to reach the root of 2026-10-30 (243099 rows).

1. 0x51ec42a04a70807359f487fbd0f8e0bd92d37fcbbf5e3f59e69d1ba871146a31
2. 0xdf57fe1cfeadbe7cb1f171ec85a974b9487c8d9244355595a338e136c6af8313
3. 0x75ab044eaee06d5ed54dab36f604f25fa27b73435913d1520025358d0f94e515
4. 0xe99c61cb0fd0ad483a7a9ee03f6259cb9a2b9c3c3d27683a1d032ce52c171ed6
5. 0xa200a4556e777db77c4e407943d380359133f784e8de78c07e5669fbfb9b1854
6. 0x5e76b2ba3538b63d7dc47c5420857db0909a58b8aa3e4a1d157945fa76269a2c
7. 0x75ce0747ed3c342145852ced60e1a7babf05fcdcdc7d55075bbd0dc55f1d1e93
8. 0xfd9eb85edd5df7bd13f1fa09030d4cb364715ed3617c0ac29e44c9f5f86efc60
9. 0xdfcab49038c020a5a64e2247a730a4d0bdf72e14480efca8bbf0e81e469bef77
10. 0xa29bbdce426ef146f965b62bbd0032403d177c233d2fd33f9f95370b33de639b
11. 0x27896472e380c0cda3117df309c9b5f52d77cc3c490f6fd7ae8ad51d325a3f7d
12. 0x2138f3bd8f20fb9331c1a4c34d5251d70a165424cd9b05639620e45e42cb8f04
13. 0x85b6002c61ef4075a6447b26f57b780bd1014041507b2fc474c4280de84b3c10
14. 0xc50bc54a5f909a7a577c4f0728b218d8be3478facb29ad6040ae8212305ae1d6
15. 0xa937fac4496d1d79e24c5f12abd33388ef710185b9d82165d4b39af6bd434545
16. 0x910a91495535ac1a9e959d27d607e185616d2d41b45bc7071c6357f426f372d8
17. 0xffe660edb9e5c6e3449a49454634c3e7b2f9fe703e5697f723b021735647ab7e
18. 0x30a81d8fcef4e8f9e2877c62796cfc5612fc1b251127d531dee28f8dbd5c5147

Day root

0x0826c7ad6039e06a2360ca0a4a3a4fe7f2626c6dc19f71a37599386f78b39875

Chained

0x36b4c8a1063758f0b8765fa1bdf75fa92fb543cc183add3e261880ee2bd1f822

Published

On Arc Testnet, block 69923247: 0x8704744146c6967c8abc9e9a99de4db7283b29e840922ea83a69b6fe776e6861