Evidence row 452159

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://agentsvc.io/api/v1/proxy/news-search"
    ]
  ],
  "name": "News Search API",
  "owner_address": "0x622efa6ceb83a5b6edbc931332f4db68b7f74f27",
  "raw": {
    "accepts": [
      {
        "amount": "6500",
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "maxTimeoutSeconds": 300,
        "network": "eip155:8453",
        "payTo": "0x622efA6Ceb83a5b6EdBC931332f4db68B7f74F27",
        "scheme": "exact"
      },
      {
        "amount": "6500",
        "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
        "extra": {
          "feePayer": "Hc3sdEAsCGQcpgfivywog9uwtk8gUBUZgsxdME1EJy88"
        },
        "maxTimeoutSeconds": 300,
        "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
        "payTo": "5JzPS5qpEwUM1vTC9GG7uqvwJdHzbEwfoPHf2Ki977tg",
        "scheme": "exact"
      },
      {
        "amount": "6500",
        "asset": "0x3c499c542cEF5E3811e1192ce70d8cC03d5c3359",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "maxTimeoutSeconds": 300,
        "network": "eip155:137",
        "payTo": "0x622efA6Ceb83a5b6EdBC931332f4db68B7f74F27",
        "scheme": "exact"
      },
      {
        "amount": "6500",
        "asset": "0xaf88d065e77c8cC2239327C5EDb3A432268e5831",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "maxTimeoutSeconds": 300,
        "network": "eip155:42161",
        "payTo": "0x622efA6Ceb83a5b6EdBC931332f4db68B7f74F27",
        "scheme": "exact"
      }
    ],
    "description": "News search: latest news articles and headlines by keyword with title, url, source and published_at from our own index of about 100,000 English web articles a day (built from the GDELT Project, thousands of outlets, last 7 days, updated every 15 minutes) plus Hacker News. Category (business, tech, health, science, politics) filters by GDELT topic. Use for current events and topic monitoring.",
    "extensions": {
      "bazaar": {
        "category": "web",
        "info": {
          "input": {
            "body": {
              "limit": 5,
              "query": "AI agents"
            },
            "bodyType": "json",
            "method": "POST",
            "type": "http"
          },
          "output": {
            "example": {
              "data": {
                "articles": [
                  {
                    "published_at": "2026-04-10T08:32:00Z",
                    "score": 1274,
                    "snippet": "",
                    "source": "Hacker News",
                    "title": "OpenCode – Open source AI coding agent",
                    "url": "https://github.com/opencode-ai/opencode"
                  },
                  {
                    "published_at": "2026-04-10T06:15:00Z",
                    "snippet": "",
                    "source": "example-news.com",
                    "title": "AI breakthroughs in 2026: what's next",
                    "url": "https://www.example-news.com/tech/ai-2026"
                  }
                ],
                "query": "artificial intelligence",
                "sources_queried": [
                  "Hacker News",
                  "GDELT"
                ],
                "total_found": 48
              },
              "success": true
            },
            "type": "json"
          }
        },
        "schema": {
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "properties": {
            "input": {
              "additionalProperties": false,
              "properties": {
                "body": {
                  "properties": {
                    "category": {
                      "default": "general",
                      "description": "Topic filter. 'tech' puts Hacker News first; the others narrow the GDELT search to that topic.",
                      "enum": [
                        "general",
                        "tech",
                        "business",
                        "science",
                        "health",
                        "politics"
                      ],
                      "type": "string"
                    },
                    "limit": {
                      "default": 10,
                      "description": "Number of articles to return (default: 10, max: 30)",
                      "type": "integer"
                    },
                    "query": {
                      "description": "Search query (e.g. 'artificial intelligence', 'climate change 2026', 'Apple earnings')",
                      "type": "string"
                    }
                  },
                  "required": [
                    "query"
                  ]
                },
                "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": {
                  "properties": {
                    "data": {
                      "properties": {
                        "articles": {
                          "items": {
                            "properties": {
                              "published_at": {
                                "description": "Publication date/time (ISO 8601 or RFC 2822)",
                                "type": "string"
                              },
                              "score": {
                                "description": "Community score/upvotes (HackerNews only)",
                                "type": "integer"
                              },
                              "snippet": {
                                "description": "Short excerpt or description (if available)",
                                "type": "string"
                              },
                              "source": {
                                "description": "Publisher domain (e.g. 'reuters.com') or 'Hacker News'",
                                "type": "string"
                              },
                              "title": {
                                "description": "Article headline",
                                "type": "string"
                              },
                              "url": {
                                "description": "Direct link to the article",
                                "type": "string"
                              }
                            },
                            "type": "object"
                          },
                          "type": "array"
                        },
                        "query": {
                          "description": "The search query",
                          "type": "string"
                        },
                        "sources_queried": {
                          "description": "News sources that were searched",
                          "items": {
                            "type": "string"
                          },
                          "type": "array"
                        },
                        "total_found": {
                          "description": "Total number of matching articles found (before limit)",
                          "type": "integer"
                        }
                      },
                      "required": [
                        "query",
                        "articles",
                        "total_found"
                      ],
                      "type": "object"
                    },
                    "success": {
                      "type": "boolean"
                    }
                  },
                  "required": [
                    "success",
                    "data"
                  ],
                  "type": "object"
                },
                "type": {
                  "type": "string"
                }
              },
              "required": [
                "type"
              ],
              "type": "object"
            }
          },
          "required": [
            "input"
          ],
          "type": "object"
        },
        "tags": [
          "news search",
          "news",
          "latest news",
          "headlines",
          "news api",
          "search",
          "articles",
          "gdelt",
          "hackernews",
          "media"
        ]
      },
      "builder-code": {
        "info": {
          "a": "bc_q6wi3opd"
        }
      }
    },
    "iconUrl": "https://res.cloudinary.com/bdb-prod/image/upload/c_fill,ar_1:1,w_256,h_256,f_auto,q_auto/v1791462963/bazaar-icons/243ff0b79dbee242.png",
    "lastUpdated": "2026-10-27T10:00:26.392Z",
    "quality": {
      "l30DaysTotalCalls": 33,
      "l30DaysUniquePayers": 7,
      "lastCalledAt": "2026-10-26T04:03:47.377Z"
    },
    "resource": "https://agentsvc.io/api/v1/proxy/news-search",
    "serviceName": "News Search API",
    "tags": [
      "news search",
      "news",
      "latest news",
      "headlines",
      "news api"
    ],
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "News search: latest news articles and headlines by keyword with title, url, source and published_at from our own index of about 100,000 English web articles a day (built from the GDELT Project, thousands of outlets, last 7 days, updated every 15 minutes) plus Hacker News. Category (business, tech, health, science, politics) filters by GDELT topic. Use for current events and topic monitoring."
}

What the leaf hashes

{"body":"389a4392182a22499cd6e7a53079a123497a3bfe46cd1901a20fb15da1697116","id":452159,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1793100517898543,"prev":19191,"subject":"x402_bazaar:https://agentsvc.io/api/v1/proxy/news-search","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. 0x4057f6469bbb0e7fff6148f262eff76081f09c18db6a55d022b9ef387b59c98d
2. 0x2a96500f6d5115951d4726fa1095293f140926a9578d035d0f85711ee68d67e4
3. 0x9afe187bc08ec5e110427935f480dc189e80f29986edc24e8b32d5fac71ce2c2
4. 0xa66bde5dd095a1394baa057f3ff151f6c7e948805bdd0a48c7a03a13efb2837c
5. 0x9b992145ab863d4708a6335d0435421792917490c20e0f6e2409a90a3700f256
6. 0x05f081ef0e7ca74048b741301bbd80f7b3d789036b390aab3cf10941d38266b8
7. 0xaaed9fc3ae8b4606de7fadee340c77a0a903d630335dd72a3ab7d00ef39e4220
8. 0x4aee650754d6221d1bd681041df46cc794d6f82361f728a4894c8873e1467615
9. 0xb84fc553a1f1b11f602fcf9689550f47cbe11d96967601c7ab4c7b91b1134551
10. 0xeba79c58e4a3ef2db94e833d53b12f55c84bc102535f34caedc4d30bf3550827
11. 0x4f137633fff61e4e593fd379320dee6ab066de0db156d01c93cb3888d4cd2051
12. 0xbac4a74052976278393cfcc6a341f6cfd372f2fd8909eeffcc72872579289c40
13. 0xe097a5c0640b3c074fef1c9f5fe91898965687ad755f1c27c31462a60e313f0a
14. 0x1de9caca1fa6dbbe090ee48dad5f962bbfd09856fd897edc8c3c110272d35c56
15. 0x2c117b27721eea45f6590fbccb471d21a7b0b079a53f089ecb300c63bdb3aebf
16. 0x3ed50f053eca72dfd3a9d45a11935240bfe691e57835c367ddebe2cbc49efe9d
17. 0x0e01aa9525097570a6edaf32bfc959de57bf5c24317cf10c0716affea85ca60d
18. 0xa20d48798a34aba12eb9c7297722982d910f06c148f5e27ac59307422964a585
19. 0x9fc354c0ea3efc3f1b6548bb77ea902a50f2c9647647ea61592efce2bd795699

Day root

0xdd77e5e99da32c3f154180d63e3c3e6fe11e896a2c6896412ef6b5c4bcf7e795

Chained

0x23bb4dfd09f55c15ac3962f53578e02c6114d5bfd9bb451cf8794fb6e2817ef4

Published

On Arc Testnet, block 69414147: 0xb2ebd83aafeb765a0ce66e76aefb133ed06606c98038fd56191e2bcd1dcb77b4