Evidence row 55175

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://hn.genexxis.com/hackernews"
    ]
  ],
  "name": "hn.genexxis.com/hackernews",
  "owner_address": "0x9287e3102d411029025c7617d75245bfc7920f17",
  "raw": {
    "accepts": [
      {
        "amount": "5000",
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "maxTimeoutSeconds": 300,
        "network": "eip155:8453",
        "payTo": "0x9287e3102D411029025C7617d75245BFc7920f17",
        "scheme": "exact"
      }
    ],
    "description": "Hacker News stories: front-page lists (top, new, best, ask, show) or full-text search, each with title, URL, domain, points, comment count, author, time, HN link and text excerpt.",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "method": "GET",
            "queryParams": {
              "maxItems": "10",
              "mode": "search",
              "q": "ai agents"
            },
            "type": "http"
          },
          "output": {
            "example": {
              "count": 10,
              "errors": [],
              "mode": "search",
              "q": "ai agents",
              "sort": "relevance",
              "stories": [
                {
                  "author": "jdoe",
                  "comments": 187,
                  "created": "2026-10-24T14:02:11.000Z",
                  "domain": "example.com",
                  "excerpt": null,
                  "hnUrl": "https://news.ycombinator.com/item?id=45678901",
                  "id": 45678901,
                  "points": 412,
                  "title": "Show HN: An open-source tool for testing AI agents",
                  "type": "story",
                  "url": "https://example.com/agent-tests"
                }
              ],
              "totalMatches": 20055
            },
            "type": "json"
          }
        },
        "schema": {
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "properties": {
            "input": {
              "additionalProperties": false,
              "properties": {
                "method": {
                  "enum": [
                    "GET"
                  ],
                  "type": "string"
                },
                "queryParams": {
                  "properties": {
                    "days": {
                      "description": "Search only: limit to stories from the last N days",
                      "type": "string"
                    },
                    "maxItems": {
                      "description": "1-50, default 20",
                      "type": "string"
                    },
                    "mode": {
                      "description": "top | new | best | ask | show | search (default top)",
                      "type": "string"
                    },
                    "q": {
                      "description": "Search query (required for mode=search)",
                      "type": "string"
                    },
                    "sort": {
                      "description": "Search only: relevance | date (default relevance)",
                      "type": "string"
                    },
                    "tags": {
                      "description": "Search only: story | ask_hn | show_hn | front_page | comment (default story)",
                      "type": "string"
                    }
                  },
                  "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"
        }
      },
      "builder-code": {
        "info": {
          "s": [
            "cdp_sdk_server"
          ]
        },
        "schema": {
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "additionalProperties": false,
          "properties": {
            "a": {
              "description": "App builder code",
              "pattern": "^[a-z0-9_]{1,32}$",
              "type": "string"
            },
            "s": {
              "description": "Service builder codes",
              "items": {
                "pattern": "^[a-z0-9_]{1,32}$",
                "type": "string"
              },
              "maxItems": 11,
              "type": "array"
            },
            "w": {
              "description": "Wallet builder code",
              "pattern": "^[a-z0-9_]{1,32}$",
              "type": "string"
            }
          },
          "type": "object"
        }
      },
      "eip2612GasSponsoring": {},
      "erc20ApprovalGasSponsoring": {}
    },
    "lastUpdated": "2026-10-26T10:29:06.024Z",
    "quality": {
      "l30DaysTotalCalls": 3,
      "l30DaysUniquePayers": 2,
      "lastCalledAt": "2026-10-26T10:29:05.509Z"
    },
    "resource": "https://hn.genexxis.com/hackernews",
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "Hacker News stories: front-page lists (top, new, best, ask, show) or full-text search, each with title, URL, domain, points, comment count, author, time, HN link and text excerpt."
}

What the leaf hashes

{"body":"59566c072325dc80c90e183c2a279ff8265756b1a8136fc71bb7fd54a11e245a","id":55175,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1793025434584165,"prev":null,"subject":"x402_bazaar:https://hn.genexxis.com/hackernews","subject_kind":"source_record"}

Proof

Fold these into the leaf in order, hashing each sorted pair with keccak256, to reach the root of 2026-10-26 (296695 rows).

1. 0x5d2963a38791a70ceb412a9e7d0c855d2e303f4440813102bb92c42939533af6
2. 0x58fc8c2350e4deb1b75ead57481535e3de51f034eda545e699dff88c54566756
3. 0x1a5ca2e6eb1e3100397fcf76259a566604d8341b738442fac084625c3fa82e9f
4. 0x309119720c6fc924cb1126cbd9878008ae6fea1cfc9a63430940765ac40a457f
5. 0xf07b329f01c7fc7eb86b8ca07ba7c53bec5abe9f5758b7d70125de8716e5e29f
6. 0x8216e88be37ad9b81e2a580cd38e67faa97c7f0e3abb1a79cc27d760481edfd8
7. 0xa43f72ad748626b989e9ac431abccfce26ff4ac374654bb5723dd10c6e6f93d0
8. 0xf5c626e30e4ade9fc33b819ed022da91a7247d7a9ceef2ac7016e313ebdcf239
9. 0xe83b2a73139a45ac5e787f5f8d00e2fdb51ec0acd6751a60cbf0f65dfcfc455f
10. 0x71c75f9312be1c838a554f724b6fc57894e7c4486ab7e013b6a6a8d65cfaebea
11. 0xb91bf0ba3ebff769d1b88f93fcb076477149787a7e31c3c28ce4fe8823b7c144
12. 0x2121cc2dbcb8663af57743dc445c8a59e5bbfffe89703f0606c9843f0d35aff8
13. 0x66883b42f4167ade51c4909f050c5478524e23786fb0b5c48bd1a53580960a68
14. 0x216cebb9ae5414599109a02297c4817d7d1c6b1394afeb97efe38e32f0053974
15. 0x7726154b91b2ad65b13849ef6cb6443b1f0ff113a3089c9bd5f2bcfc16be099d
16. 0x47b89901b0f07938a6b9a66ddf35683903f79d756a7c7763665fd632758b08d0
17. 0x9a83be955a206deb65b995adfd92c58fa31c95fbbf926bd199d300e70b08b26d
18. 0x20704208aa6923d6b2450ef74ede87a6e0265d46447926038fe9506e9e154b2d
19. 0x9b9ce5b74b9bab5121612ef6b64920a8d453cbf311096a423eef9702747e868a

Day root

0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8

Chained

0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a

Published

On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae