Evidence row 2204557

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://eltociear-tokenguard.hf.space/social/hn"
    ]
  ],
  "name": "tokenguard",
  "owner_address": "0x5bcda55247b238a573a968b234f788a2d35664dd",
  "raw": {
    "accepts": [
      {
        "amount": "20000",
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "maxTimeoutSeconds": 300,
        "network": "eip155:8453",
        "payTo": "0x5bCDA55247B238a573A968B234F788a2D35664Dd",
        "scheme": "exact"
      }
    ],
    "description": "Hacker News full-archive search: stories, comments, Show HN and Ask HN with points, comment counts and URLs",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "body": {
              "limit": 10,
              "query": "x402"
            },
            "bodyType": "json",
            "method": "POST",
            "type": "http"
          },
          "output": {
            "example": {
              "count": 2,
              "query": "x402",
              "results": [
                {
                  "comments": 118,
                  "points": 312,
                  "title": "…",
                  "url": "https://…"
                }
              ]
            },
            "type": "json"
          }
        },
        "schema": {
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "properties": {
            "input": {
              "additionalProperties": false,
              "properties": {
                "body": {
                  "properties": {
                    "limit": {
                      "description": "1-50 hits (default 20)",
                      "type": "integer"
                    },
                    "query": {
                      "description": "Search terms; omit for the front page",
                      "type": "string"
                    },
                    "tags": {
                      "description": "story | comment | show_hn | ask_hn | front_page",
                      "type": "string"
                    }
                  },
                  "required": []
                },
                "bodyType": {
                  "enum": [
                    "json",
                    "form-data",
                    "text"
                  ],
                  "type": "string"
                },
                "method": {
                  "enum": [
                    "POST",
                    "PUT",
                    "PATCH"
                  ],
                  "type": "string"
                },
                "type": {
                  "const": "http",
                  "type": "string"
                }
              },
              "required": [
                "type",
                "method",
                "bodyType",
                "body"
              ],
              "type": "object"
            },
            "output": {
              "properties": {
                "example": {
                  "type": "object"
                },
                "type": {
                  "type": "string"
                }
              },
              "required": [
                "type"
              ],
              "type": "object"
            }
          },
          "required": [
            "input"
          ],
          "type": "object"
        }
      },
      "catalogue": {
        "discovery": "https://eltociear-tokenguard.hf.space/.well-known/x402",
        "note": "Same x402 rail (USDC on Base), same payTo wallet, no account or API key. GET the discovery URL for the full route list and prices.",
        "related": [
          {
            "covers": "pre-interaction EVM contract and token risk check",
            "discovery": "https://eltociear-contract-guard.hf.space/.well-known/x402",
            "service": "contract-guard"
          },
          {
            "covers": "web data (read/crawl/search), MCP and agent-skill security scanning, developer supply chain",
            "discovery": "https://eltociear-skill-audit.hf.space/.well-known/x402",
            "service": "skill-audit"
          }
        ],
        "resources": "https://eltociear-tokenguard.hf.space/x402-resources"
      }
    },
    "lastUpdated": "2026-10-08T06:14:28.56Z",
    "quality": {
      "l30DaysTotalCalls": 1,
      "l30DaysUniquePayers": 1,
      "lastCalledAt": "2026-10-08T06:14:28.456Z"
    },
    "resource": "https://eltociear-tokenguard.hf.space/social/hn",
    "serviceName": "tokenguard",
    "tags": [
      "social",
      "feeds",
      "web",
      "data",
      "ai-agents"
    ],
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "Hacker News full-archive search: stories, comments, Show HN and Ask HN with points, comment counts and URLs"
}

What the leaf hashes

{"body":"cd3c6b5c9f0979e92a4664ad8d458e4a9d2a3996e89846f303b258438258baab","id":2204557,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1793646913971255,"prev":74538,"subject":"x402_bazaar:https://eltociear-tokenguard.hf.space/social/hn","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. 0xc17033adf013f33d3ce95bf0b9c01e594e5e209928ead4b3c94bdca064a7f93b
2. 0xa3dadfd9439d0de485f08124c2e1d64741f325f69614dd60e97f181f02c88321
3. 0x43d0749501db622a5fa360773c0f64af53ec3ad9af9dd72c61b5078524a60438
4. 0x435187c85e34beb308933bd899db6876d3c55fb5bce2c8dbdbd6567cc4f9c7d2
5. 0x02db15a668544cc53d3ce95fe0b3d505d7283107519145735cf7dce46d20f7d5
6. 0x3c3e21764c5465ed0bb3e2073c0735fb7cd7cbf3390d2e22e057f894e1e49f19
7. 0xbe83e3c670a55ca60808bd2ebe6a982754a6c214142e6cd6babb4c3d492d6adc
8. 0x27aa677a1b8d3abcda44ee14cd98353ed3aeacb0313ddfa5534b28787827821b
9. 0xf4966dd68e81b5114471b44a86f93d0df774cfadb2ae5d20f12a89a51323c14b
10. 0x0b5a471453206668a6eb19f48c05916ee653befcfcd6beffe12601aeabd22372
11. 0x1fa3c6e9243d9ae6c0546a8f2dae78ee6cfe9843f31a4b3bd9431dffa3ae06e7
12. 0x7ad018da9217f00e9553ad7f613d19ec65a84c3a339588527c8b35c90d6567b4
13. 0xd7f4adbe11763ae678ef4c51fd1fa9ddf52bf60add48464d376475766e9accfe
14. 0x0b45a0435ea40bcbc48c2b318e8c62aa48a7e6b10e52b4548ada394225a7bd9f
15. 0xcbfaf790331071a9b3499a4db6f9d951fe5d04baefda2c66846b52b023ab8ae5
16. 0x37d31d28d0bd3743650d57e9fbf999efa4592cac831267f83aa125335b35a16b
17. 0xdb8bd933619a267f9790faac9839143d202be46af284371cc369cdf683f897ba
18. 0x98cbbf2c68ab4c0b4db782aeb88bea1f30b02178cf8b5d3d24a931d19492ea6d
19. 0x252cce55f1a3d5391c16f82d7f62494429a5f69b03486d4cfcfb7b2c96d6c884

Day root

0x78fecaabbe319e56f5c4b80fc02e2052e198ad24781da8832a475ff65f2002d1

Chained

0xdc35957db5d1371ca382b9152878ffece28ec7c5cb4f98fd71ddb367f8b999b2

Published

On Arc Testnet, block 70432815: 0x56b814612eb2e3e544153df3e91e1f7199106d1e430c7d8c6b653feeb9ebe9af