Evidence row 1262225

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://tools.usefulwork.app/tools/dns"
    ]
  ],
  "name": "Useful Work tools",
  "owner_address": "0x7d020f2167f44a9d52859f7f81cfdae32dc845ec",
  "raw": {
    "accepts": [
      {
        "amount": "2000",
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "maxTimeoutSeconds": 300,
        "network": "eip155:8453",
        "payTo": "0x7d020f2167f44a9d52859F7f81cFDae32Dc845ec",
        "scheme": "exact"
      }
    ],
    "description": "Look up DNS records (A, AAAA, CNAME, MX, NS, TXT, CAA) over DNS-over-HTTPS",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "method": "GET",
            "queryParams": {
              "name": "example.com",
              "type": "A"
            },
            "type": "http"
          },
          "output": {
            "example": {
              "answers": [
                {
                  "data": "93.184.215.14",
                  "name": "example.com",
                  "ttl": 300
                }
              ],
              "name": "example.com",
              "status": 0,
              "type": "A"
            },
            "type": "json"
          }
        },
        "schema": {
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "properties": {
            "input": {
              "additionalProperties": false,
              "properties": {
                "method": {
                  "enum": [
                    "GET"
                  ],
                  "type": "string"
                },
                "queryParams": {
                  "properties": {
                    "name": {
                      "description": "Domain name",
                      "type": "string"
                    },
                    "type": {
                      "enum": [
                        "A",
                        "AAAA",
                        "CNAME",
                        "MX",
                        "NS",
                        "TXT",
                        "CAA"
                      ],
                      "type": "string"
                    }
                  },
                  "required": [
                    "name"
                  ],
                  "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"
        }
      },
      "useful-work": {
        "available": false,
        "reason": "send an X-Useful-Work-Agent header (8-128 characters) to be offered work",
        "version": 1
      }
    },
    "iconUrl": "https://res.cloudinary.com/bdb-prod/image/upload/c_fill,ar_1:1,w_256,h_256,f_auto,q_auto/v1793320018/bazaar-icons/8fc427e2b44afe48.png",
    "lastUpdated": "2026-10-30T00:26:57.969Z",
    "quality": {
      "l30DaysTotalCalls": 1,
      "l30DaysUniquePayers": 1,
      "lastCalledAt": "2026-10-30T00:26:57.493Z"
    },
    "resource": "https://tools.usefulwork.app/tools/dns",
    "serviceName": "Useful Work tools",
    "tags": [
      "web",
      "useful-work"
    ],
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "Look up DNS records (A, AAAA, CNAME, MX, NS, TXT, CAA) over DNS-over-HTTPS"
}

What the leaf hashes

{"body":"1bd3074666af4f7162ca337c9a943888ddda7a04305b8e87976a3b8c58d68a7d","id":1262225,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1793385521074338,"prev":null,"subject":"x402_bazaar:https://tools.usefulwork.app/tools/dns","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. 0x76d30e41669c473f6533592109bb45bd1527cf9787b0f4cebd5c554c7b799b3f
2. 0x3704e4061ea266406f87ecb6fa8a26fdf765ea71aa40831da6e548eb6a1459fd
3. 0xcd67215076bf29e6ea4804435fc8042dabaa65dc9474593f1fe7c51692aeec96
4. 0xb93947eb2f2bcb5a3c53dda4a7905308afa633787708dc9cb80a7e830867a647
5. 0x95070e82f03c787ce8ac82cfe7190ba7904d35890f3a85235bbb0cc3b2a5336c
6. 0xe3247b397e7387b1680b313c1a9421816e6546f43b210bd7372d47ab2d2afed0
7. 0x82c73c1ec9b91ca644bcd3e11f6c8a32da667645a4422dfeca941c147260a05a
8. 0x3af5ad4539bc35bbc0349d93326796b6e8fd4d883bd6a72103ea0dddd5419201
9. 0x2146e94fb41a09dc9002ddeb6a17915c7c498c338b8e0e04b8703d2203e5e25a
10. 0xf1435eb1806e6d8ef508a4fd008710c974635365103e8a9c36a4a34507f09fff
11. 0x5f2108a18036c397c1b66575525e1ffcda4a8e76e098ca6f1a533303267381c4
12. 0xf3f40fe498675360f57a43c0bd787d90a1f1734ae0e4763208da630024b06bcd
13. 0x630c92ab7a09a852e8f8d699227d5d4a4acf303f63bea031f0057a3a36087420
14. 0x75bcbdd2a0d7acdea21f6011126339c8e33a476ec0a76842480cf5bf70db6a72
15. 0xdf25f5d38e3fb54d3e66e3bf876db529f619041e0d21f0bc35b80003418e3d9c
16. 0xdbaaffa44665d1fa60d33d2c4075bd87629b76d01a6ee63e621e78590303b56d
17. 0xffe660edb9e5c6e3449a49454634c3e7b2f9fe703e5697f723b021735647ab7e
18. 0x30a81d8fcef4e8f9e2877c62796cfc5612fc1b251127d531dee28f8dbd5c5147

Day root

0x0826c7ad6039e06a2360ca0a4a3a4fe7f2626c6dc19f71a37599386f78b39875

Chained

0x36b4c8a1063758f0b8765fa1bdf75fa92fb543cc183add3e261880ee2bd1f822

Published

On Arc Testnet, block 69923247: 0x8704744146c6967c8abc9e9a99de4db7283b29e840922ea83a69b6fe776e6861