Evidence row 426539

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": "2026-10-27T01:33:36.017Z",
    "quality": {
      "l30DaysTotalCalls": 4,
      "l30DaysUniquePayers": 2,
      "lastCalledAt": "2026-10-27T01:33:35.466Z"
    },
    "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":"b8f2822410f7e9ede5073329f7251e84ab5749c6e8c906f9e07030da2cacda2d","id":426539,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1793086261790072,"prev":408814,"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 2026-10-27 (273461 rows).

1. 0x2fbc1e9fadaba30421e6d8745f1191c463c6337498d7185273331e673561d94c
2. 0x3267b28d869ddb55e0495bf073d523c52609be2d5c45089c50cda3c18e6a68d1
3. 0xfaa9edd427f1684c7b67e1019c4669b40b9909339f78db270ffad89c843f21f3
4. 0x9f70491b163dc16e1d65b91681d78188b798c11fdb45614534ffd8e27ad55e54
5. 0x5f47b735de139b1376cded6163485938d32422e9eebe89554c496027a4690858
6. 0xecd1dae6e68db004cda6cbdbf1ed55cbc9b53627f84aa99ba6afc087577945ba
7. 0x897d3944cf524ace76b5279b783ead260b8f4e2f79c7c0eb620602e6207d0bf5
8. 0xdc3ff6e0f35250943df85e923b04b75fb7a5f35c521b1d415573c38f73dc869e
9. 0x30b5bd02fd816232a9be235538abd9136492f1e6d0039d9a54b40c8676b75fab
10. 0x09d22aa8321804bb85af75a6d6a38dd03052a661f17c34bb148cb9160e1dc866
11. 0x20bfebc9be09c8d1bd071c02e953c031252540d9fc909484016645ed1412efc4
12. 0x2d9c2517fb6dcdc0ce42dd3a93f7e33064509cbed0a9132fb1209ec8f33ef0ab
13. 0x2a25cd9926d8f2ef4726fd2a80f77b1ca202b6c3ca56aeb2f520555c93efd434
14. 0x595de2dea3b8fa56dbd6142dd78ae79f3e7169c631e41a844b100613abb3e430
15. 0x8360ee1105e4d9f9312067cbbfd47c69c5948665ae582b9684a580c8f4e199e1
16. 0x52efa60e0c3d8525486d2310eb3b6b566c9677c64fd1f819edb072cf101bcbdb
17. 0x22c1fb9487ee0b9732fa017a0cc321eb27a60c08450d112f755089796e12cb1c
18. 0xa20d48798a34aba12eb9c7297722982d910f06c148f5e27ac59307422964a585
19. 0x9fc354c0ea3efc3f1b6548bb77ea902a50f2c9647647ea61592efce2bd795699

Day root

0xdd77e5e99da32c3f154180d63e3c3e6fe11e896a2c6896412ef6b5c4bcf7e795

Chained

0x23bb4dfd09f55c15ac3962f53578e02c6114d5bfd9bb451cf8794fb6e2817ef4

Published

On Arc Testnet, block 69414147: 0xb2ebd83aafeb765a0ce66e76aefb133ed06606c98038fd56191e2bcd1dcb77b4