Evidence row 17146

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://quantagentshop.com/v1/paper-search"
    ]
  ],
  "name": "Quant Agent Shop",
  "owner_address": "0x4d8d8d4f04512029172e0176744eec4ae5238309",
  "raw": {
    "accepts": [
      {
        "amount": "10000",
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "maxTimeoutSeconds": 120,
        "network": "eip155:8453",
        "payTo": "0x4d8d8D4f04512029172e0176744Eec4AE5238309",
        "scheme": "exact"
      }
    ],
    "description": "Scholarly paper search. Send a topic or title, or one DOI; returns up to 20 published works with title, authors, year, journal or venue, type, DOI link and citation count from Crossref. Use to find and cite papers. Metadata only, no abstracts or full text. Typical response 1 to 2 s. Failed calls are not charged.",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "body": {
              "query": "is attention all you need",
              "rows": 1
            },
            "bodyType": "json",
            "method": "POST",
            "type": "http"
          },
          "output": {
            "example": {
              "query": "is attention all you need",
              "results": [
                {
                  "author_count": 2,
                  "authors": [
                    "A. Author",
                    "B. Author"
                  ],
                  "cited_by": 55,
                  "doi": "10.1007/978-3-031-84300-6_13",
                  "title": "Is Attention All You Need?",
                  "type": "book-chapter",
                  "url": "https://doi.org/10.1007/978-3-031-84300-6_13",
                  "venue": "Example Proceedings",
                  "year": 2025
                }
              ],
              "source": "Crossref metadata",
              "total": 1843
            },
            "type": "json"
          }
        },
        "schema": {
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "properties": {
            "input": {
              "additionalProperties": false,
              "properties": {
                "body": {
                  "additionalProperties": false,
                  "properties": {
                    "doi": {
                      "anyOf": [
                        {
                          "maxLength": 200,
                          "minLength": 7,
                          "pattern": "^10\\.\\S+/\\S+$",
                          "type": "string"
                        },
                        {
                          "type": "null"
                        }
                      ],
                      "default": null,
                      "description": "One DOI, such as 10.1038/nature14539. Send query or doi, not both.",
                      "title": "Doi"
                    },
                    "from_year": {
                      "anyOf": [
                        {
                          "maximum": 2100,
                          "minimum": 1900,
                          "type": "integer"
                        },
                        {
                          "type": "null"
                        }
                      ],
                      "default": null,
                      "description": "Only works published from this year on.",
                      "title": "From Year"
                    },
                    "query": {
                      "anyOf": [
                        {
                          "maxLength": 300,
                          "minLength": 3,
                          "type": "string"
                        },
                        {
                          "type": "null"
                        }
                      ],
                      "default": null,
                      "description": "Topic or title to search for.",
                      "title": "Query"
                    },
                    "rows": {
                      "default": 10,
                      "description": "How many works to return (query mode).",
                      "maximum": 20,
                      "minimum": 1,
                      "title": "Rows",
                      "type": "integer"
                    }
                  },
                  "type": "object"
                },
                "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"
        }
      }
    },
    "lastUpdated": "2026-10-26T10:53:48.435Z",
    "quality": {
      "l30DaysTotalCalls": 21,
      "l30DaysUniquePayers": 5,
      "lastCalledAt": "2026-10-26T10:53:48.297Z"
    },
    "resource": "https://quantagentshop.com/v1/paper-search",
    "serviceName": "Quant Agent Shop",
    "tags": [
      "web-search",
      "web-scraping",
      "company-data",
      "research",
      "compliance"
    ],
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "Scholarly paper search. Send a topic or title, or one DOI; returns up to 20 published works with title, authors, year, journal or venue, type, DOI link and citation count from Crossref. Use to find and cite papers. Metadata only, no abstracts or full text. Typical response 1 to 2 s. Failed calls are not charged."
}

What the leaf hashes

{"body":"49cdae63511ecde8ad82ef300fc678cff6fbdf63907509c4abf7d5b91b690c45","id":17146,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1793025325552583,"prev":null,"subject":"x402_bazaar:https://quantagentshop.com/v1/paper-search","subject_kind":"source_record"}

Proof

Its day has not closed yet. A day closes ten minutes after midnight UTC; the proof appears here then.