Evidence row 2200118

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://x402-extract-wg5z.onrender.com/v1/changed"
    ]
  ],
  "name": "x402-changed",
  "owner_address": "0xea6c6d0361a758e51004fc5b0c31a3c6b2408858",
  "raw": {
    "accepts": [
      {
        "amount": "8000",
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "maxTimeoutSeconds": 300,
        "network": "eip155:8453",
        "payTo": "0xea6c6d0361a758e51004fc5b0c31a3c6b2408858",
        "scheme": "exact"
      }
    ],
    "description": "What changed on a page since you last saw it: deterministic line diff of any public URL against text you supply. $0.008 USDC per call on Base.",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "method": "GET",
            "queryParams": {
              "previous": "Old pricing…",
              "url": "https://example.com/pricing"
            },
            "type": "http"
          },
          "output": {
            "example": {
              "added": [
                "New pricing…"
              ],
              "added_count": 2,
              "changed": true,
              "current_hash": "9f2c…",
              "previous_hash": "41ab…",
              "removed": [
                "Old pricing…"
              ],
              "removed_count": 1,
              "url": "https://example.com/pricing"
            },
            "type": "json"
          }
        },
        "schema": {
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "properties": {
            "input": {
              "additionalProperties": false,
              "properties": {
                "method": {
                  "enum": [
                    "GET"
                  ],
                  "type": "string"
                },
                "queryParams": {
                  "properties": {
                    "previous": {
                      "description": "The text you last saw (≤10,000 chars). The server is stateless: it holds no baseline, you supply it.",
                      "type": "string"
                    },
                    "url": {
                      "description": "Public http(s) page to check (same fetch rules as /extract)",
                      "type": "string"
                    }
                  },
                  "required": [
                    "url",
                    "previous"
                  ],
                  "type": "object"
                },
                "type": {
                  "const": "http",
                  "type": "string"
                }
              },
              "required": [
                "type",
                "method"
              ],
              "type": "object"
            },
            "output": {
              "properties": {
                "example": {
                  "properties": {
                    "added": {
                      "description": "New lines (max 50)",
                      "items": {
                        "type": "string"
                      },
                      "type": "array"
                    },
                    "added_count": {
                      "type": "integer"
                    },
                    "changed": {
                      "type": "boolean"
                    },
                    "current_hash": {
                      "description": "SHA-256 of the current page text",
                      "type": "string"
                    },
                    "previous_hash": {
                      "description": "SHA-256 of the supplied previous text",
                      "type": "string"
                    },
                    "removed": {
                      "description": "Gone lines (max 50)",
                      "items": {
                        "type": "string"
                      },
                      "type": "array"
                    },
                    "removed_count": {
                      "type": "integer"
                    },
                    "url": {
                      "type": "string"
                    }
                  },
                  "required": [
                    "changed",
                    "current_hash",
                    "previous_hash",
                    "added_count",
                    "removed_count",
                    "added",
                    "removed",
                    "url"
                  ],
                  "type": "object"
                },
                "type": {
                  "type": "string"
                }
              },
              "required": [
                "type"
              ],
              "type": "object"
            }
          },
          "required": [
            "input"
          ],
          "type": "object"
        }
      }
    },
    "lastUpdated": "2026-11-02T16:36:36.476Z",
    "quality": {
      "l30DaysTotalCalls": 1,
      "l30DaysUniquePayers": 1,
      "lastCalledAt": "2026-11-02T16:36:36.186Z"
    },
    "resource": "https://x402-extract-wg5z.onrender.com/v1/changed",
    "serviceName": "x402-changed",
    "tags": [
      "web-monitoring",
      "diff",
      "change-detection",
      "web-extraction",
      "ai-agents"
    ],
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "What changed on a page since you last saw it: deterministic line diff of any public URL against text you supply. $0.008 USDC per call on Base."
}

What the leaf hashes

{"body":"50174ed28fcac24533c7d743768380cbe0a6b04fbe4622e3f6e4144dd81d1f31","id":2200118,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1793646795958100,"prev":null,"subject":"x402_bazaar:https://x402-extract-wg5z.onrender.com/v1/changed","subject_kind":"source_record"}

Proof

Fold these into the leaf in order, hashing each sorted pair with keccak256, to reach the root of 2026-11-02 (444186 rows).

1. 0x0251d63fb34af8a8359058a22b049a420e72f6f61c288ba9826b59513fa576f9
2. 0x553befd0e3bbc77f3cfbc6d369233c6d53d4a6fa6f64b20df229d6abee53619d
3. 0xb86627833cad072c1895d7e97d15ada8aca579d5202d0ed70cc11c24917bd9e7
4. 0x803d16398204a492f70d4a6e16399275f6f46c57ab3f955296c3b9515a675e1a
5. 0x927921ca7d2f6133568561ea331298de91a85d6030acddcbac87ce205dee8c44
6. 0x469f38d478e1e289c4b9858e7930e69a48406da96a7726371ea2ec479ac59467
7. 0x28814d8c8f4b1ae54535d27c61a3a0bb8d6d218cfa51b3ef4fb24ff93598957d
8. 0x4e8f0e967a4fa157e9722a1512c45fcbfbea417a67dce24bb0d85a972b9344bb
9. 0x0943481d35e8e73ce3415f863510f6799b4d0262f1bd38260eb8160d4a313f33
10. 0x6476a38c605e75a4fe7d52eaf940aa4dc0e9099debdf81aef48d8b1449612a43
11. 0x06176a1984ad07b5bed809f9917145c50e37d26626abe1f82716ffa19eb6b66c
12. 0x0154d753e5f594e54f1ab6d5100a317d12face9f45bc53b289185639f13d17d9
13. 0x9ccfa562467b683727533a101c56f2ec1b15d392976c5a1d03db8b6563b90233
14. 0x9acdcc385ecc9f1094faf2e01677d863638d23bede5aed4ca22def76698e0af3
15. 0x150a4dbcf309a6bb857da0b59f7588bd57a20fca094e579bf41d6cc6df9c7bff
16. 0x7cb861d18f06406535ade133f716d897f27d257cf0121f99d94c78c713c4b54d
17. 0x53a741b69e9e51c4a288a74712aa6ac3fb28c8923cd3e6461d161c4f2d48b31a
18. 0x050f2978b537f7afb21ee1551577cdf146d1c56f4df12d24315ae5e69366b0a4
19. 0x365b161a4b68d750dcc4b3ecce1154a2163c87b08762079428e68f0ebb6a754e

Day root

0x78fecaabbe319e56f5c4b80fc02e2052e198ad24781da8832a475ff65f2002d1

Chained

0xdc35957db5d1371ca382b9152878ffece28ec7c5cb4f98fd71ddb367f8b999b2

Published

On Arc Testnet, block 70432815: 0x56b814612eb2e3e544153df3e91e1f7199106d1e430c7d8c6b653feeb9ebe9af