Evidence row 2199760

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://eltociear-tokenguard.hf.space/data/pubmed"
    ]
  ],
  "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": "Biomedical literature search over PubMed (NCBI, 37M+ citations): titles, journals, authors, dates and DOIs",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "body": {
              "limit": 5,
              "query": "crispr gene editing"
            },
            "bodyType": "json",
            "method": "POST",
            "type": "http"
          },
          "output": {
            "example": {
              "count": 2,
              "query": "crispr gene editing",
              "results": [
                {
                  "doi": "10.1038/…",
                  "journal": "Nature",
                  "pmid": "12345678",
                  "title": "…"
                }
              ]
            },
            "type": "json"
          }
        },
        "schema": {
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "properties": {
            "input": {
              "additionalProperties": false,
              "properties": {
                "body": {
                  "properties": {
                    "limit": {
                      "description": "1-25 results (default 10)",
                      "type": "integer"
                    },
                    "query": {
                      "description": "Search terms",
                      "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": {
                  "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": "2026-10-18T12:14:15.759Z",
    "quality": {
      "l30DaysTotalCalls": 2,
      "l30DaysUniquePayers": 2,
      "lastCalledAt": "2026-10-18T12:14:15.616Z"
    },
    "resource": "https://eltociear-tokenguard.hf.space/data/pubmed",
    "serviceName": "tokenguard",
    "tags": [
      "data",
      "public-records",
      "research",
      "web",
      "ai-agents"
    ],
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "Biomedical literature search over PubMed (NCBI, 37M+ citations): titles, journals, authors, dates and DOIs"
}

What the leaf hashes

{"body":"2d6baa877de0d563c4e11cadaba5000da45a27e0ed3d3e351b2c2e7d9a159fe2","id":2199760,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1793646790977762,"prev":74465,"subject":"x402_bazaar:https://eltociear-tokenguard.hf.space/data/pubmed","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. 0x646507d3e813f2001ded5d9a950eecc4af3b8ca3f510422ad3b15e5d748c8002
2. 0x8b283ef2bb9643a93d44447f0625c65d78b0856f5f608255e0bbc8fda252599f
3. 0xeb120e96366ba8ff416b6489a2e47e51013033fa587b511e9c044dd45b7e25a3
4. 0x53d8e7e4ccdda468d746429a61a48dfdc15dc9b403b14d7b458dc677ae4a2acd
5. 0xd3bedeed3906d125d463d598b73090dd45a83eff51c0743af679c3904c065380
6. 0xfd32c1b23efc50dfe15ece98877cd1a522697541d34b069c21b5e9dd81415cd5
7. 0x7a19f34f6fb518058581bdba273afbeb01214b7e97e86127dd4e3ee1a7368f88
8. 0x85ca719cc8da0c1a0efc7b142b3ca9ea55494fc023218424cff72ab948ae6d84
9. 0x262cfaff4f1c82789e4b2188eb63527f5c2a5dd8d2d1c0e8dc9b5f8032a3505f
10. 0x12c31efd2dcead375f12fd756a86569b547e19470beeec89ba1e0633d95070ee
11. 0x33d105a457c79e0b2de160c1b603c1f3845d9097f59a6bb2bcaa6572c0bbac63
12. 0xfb198b5e9ed6a30d23cc6c63e240376a59838835d128c19ba80c223b34685b35
13. 0x43843187ed08d9e521651cb9dfff6531be94049b43e391bab5e05b93fc4383d3
14. 0xfb5ea8fd7d0c463ff98fdc93228854845802421c0e3865536227edf756498fcd
15. 0x23f4763e8db2efe57fbc28dfc68f2b97b65f54a03425994e68157763af649a50
16. 0x0e5696ae625571c52ddcd8dc09aa6c994b4ab38f2086df20d56f1f01c603e501
17. 0xf9973981f80219d4f00fa9186b40a8144accc0c9875572fb79eaea312a21a187
18. 0x4d205063c881c48edbbb37762a8d3bbb7444d4c42daa882f663a231893d25c35
19. 0x365b161a4b68d750dcc4b3ecce1154a2163c87b08762079428e68f0ebb6a754e

Day root

0x78fecaabbe319e56f5c4b80fc02e2052e198ad24781da8832a475ff65f2002d1

Chained

0xdc35957db5d1371ca382b9152878ffece28ec7c5cb4f98fd71ddb367f8b999b2

Published

On Arc Testnet, block 70432815: 0x56b814612eb2e3e544153df3e91e1f7199106d1e430c7d8c6b653feeb9ebe9af