Evidence row 3969035

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": 1,
      "l30DaysUniquePayers": 1,
      "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":"e2821645e3287a863b5aa5c549860dcd74276336c20f3abf376690addc9d3b9b","id":3969035,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1794083546702637,"prev":2199760,"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 2026-11-07 (195826 rows).

1. 0x1335b10b57e4cf7ea9011a256c57609f771128961973b080d039604b9c57f179
2. 0xedeac3e2863c38f3294ed7cfe1314380eb53a1de49121a516c095d5e85d8380f
3. 0xe8bf1bffe421be8bfe3de3a3ecbda6c9aba031bfeeef1d602f600f0227fedec5
4. 0x7ed4f5a87f3ef93c1a258625371c9aae553c1cff3f8835469080cb77515e9ff0
5. 0x43c52b35c352097a2a8225cb24aa2b9f8b5bed07b6693cc6ef676dea93be2d58
6. 0x5d1c7b6486b7df06a05d12fe579d900699d11b4a82760b7d4cad109169cd8c05
7. 0x9fd8a4e0a4696d40498a49740ab28f720030768da48330896fc3eb6848e88597
8. 0x655bfcc5e00dcf1a3e189d8c83ccc6207bbd88422935c136c8adce9a676ca483
9. 0x705637060b516900c5b51a2080c9580665bf181e7acf96c421c2c276f15e7ca8
10. 0x8d326627003099a2da95fc90375e0a0080181f7799b92a2eb4d8c104a2fa38aa
11. 0x9c0dfa76b4d5d341bbe18d0d4d49d1b94e7dd36910b01e01d4ad7ae99ff596f9
12. 0x61dd1e4985157591ce2d1071613698f1cea71b6f8b631d357d4e357ded5e4cf1
13. 0x7891e59c9852218de151f10668d70fc74d1aa26e303765cb61bebe0d9491d8ba
14. 0xfdd7b2b79797e6e952d4f424ae23c7bdff01d5d174b3c27e3aa0f615e279d235
15. 0x648a3baa51de8aa55066ecdaef86a2d63e9b16b533148da0c58eba70048b858f
16. 0x80bdd907e4cabf074c5e8d919e88abbc805de47d0c5c142e281a67157f82926f
17. 0x54292a94f447f1fd33c01b5c99da465043f11022958626a2ea562c457fef697a
18. 0xff23fa8a9de3f957315ef0dfe7e8d8f6b1a51dae05fef7615c59794e019ff05c

Day root

0x17da9e85e1b138541355d33543ff34e3503cd3a49d37728fb53643e2a0416a2d

Chained

0xed34bd4af17282643de8cb9591c84d0aa1b39e1e9ae9864941e543f5a15718cb

Published

On Arc Testnet, block 71280839: 0xc3f6784179e0ca32236ba89472473e882a81d03fcc5ce27ca58ded2e01e112aa