Evidence row 526326

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://http--forest-gas-station-mainnet--lcjl27p8lmjs.code.run/mcp/preflight"
    ]
  ],
  "name": "Forest Agent Tools",
  "owner_address": "0xb48d918151311f982d542ef5c84cc1cd54cff7a9",
  "raw": {
    "accepts": [
      {
        "amount": "4000",
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "maxTimeoutSeconds": 120,
        "network": "eip155:8453",
        "payTo": "0xb48D918151311F982d542eF5C84cc1cd54CFf7a9",
        "scheme": "exact"
      }
    ],
    "description": "Read-only MCP handshake/tools-list preflight; no destructive tool calls. Base mainnet USDC",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "body": {
              "url": "https://http--forest-gas-station-mainnet--lcjl27p8lmjs.code.run/fixtures/mcp"
            },
            "bodyType": "json",
            "method": "POST",
            "type": "http"
          },
          "output": {
            "example": {
              "capability": "mcp.preflight",
              "data": {
                "auth_required": false,
                "latency_ms": 1,
                "negotiated_protocol_version": "2025-03-26",
                "protocol_version": "2025-03-26",
                "reachable": true,
                "tool_count": 0,
                "tools": [],
                "url": "https://mcp.example.com/mcp"
              },
              "meta": {
                "cache": "miss",
                "checked_at": "2026-01-01T00:00:00.000Z",
                "duration_ms": 1,
                "provider": "mcp-client"
              },
              "ok": true,
              "version": "1"
            },
            "type": "json"
          }
        },
        "schema": {
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "properties": {
            "input": {
              "additionalProperties": false,
              "properties": {
                "body": {
                  "additionalProperties": false,
                  "properties": {
                    "protocol_version": {
                      "description": "Public protocol version value used to scope this lookup.",
                      "maxLength": 32,
                      "type": "string"
                    },
                    "url": {
                      "description": "Public HTTP(S) URL to inspect, resolve, or compare.",
                      "type": "string"
                    }
                  },
                  "required": [
                    "url"
                  ],
                  "type": "object"
                },
                "bodyType": {
                  "enum": [
                    "json",
                    "form-data",
                    "text"
                  ],
                  "type": "string"
                },
                "method": {
                  "enum": [
                    "POST"
                  ],
                  "type": "string"
                },
                "type": {
                  "const": "http",
                  "type": "string"
                }
              },
              "required": [
                "type",
                "method",
                "bodyType",
                "body"
              ],
              "type": "object"
            },
            "output": {
              "properties": {
                "example": {
                  "additionalProperties": false,
                  "properties": {
                    "capability": {
                      "const": "mcp.preflight",
                      "description": "Public capability value used to scope this lookup."
                    },
                    "data": {
                      "additionalProperties": false,
                      "description": "Public data value used to scope this lookup.",
                      "properties": {
                        "auth_required": {
                          "description": "Public auth required value used to scope this lookup.",
                          "type": "boolean"
                        },
                        "latency_ms": {
                          "description": "Public latency ms value used to scope this lookup.",
                          "type": "integer"
                        },
                        "negotiated_protocol_version": {
                          "description": "Public negotiated protocol version value used to scope this lookup.",
                          "type": [
                            "string",
                            "null"
                          ]
                        },
                        "protocol_version": {
                          "description": "Public protocol version value used to scope this lookup.",
                          "type": [
                            "string",
                            "null"
                          ]
                        },
                        "reachable": {
                          "description": "Public reachable value used to scope this lookup.",
                          "type": "boolean"
                        },
                        "tool_count": {
                          "description": "Public tool count value used to scope this lookup.",
                          "type": "integer"
                        },
                        "tools": {
                          "description": "Public tools value used to scope this lookup.",
                          "type": "array"
                        },
                        "url": {
                          "description": "Public HTTP(S) URL to inspect, resolve, or compare.",
                          "type": "string"
                        }
                      },
                      "required": [
                        "url",
                        "reachable",
                        "protocol_version",
                        "negotiated_protocol_version",
                        "tool_count",
                        "tools",
                        "auth_required",
                        "latency_ms"
                      ],
                      "type": "object"
                    },
                    "meta": {
                      "additionalProperties": false,
                      "description": "Public meta value used to scope this lookup.",
                      "properties": {
                        "cache": {
                          "description": "Public cache value used to scope this lookup.",
                          "enum": [
                            "hit",
                            "miss",
                            "bypass"
                          ]
                        },
                        "checked_at": {
                          "description": "Public checked at value used to scope this lookup.",
                          "type": "string"
                        },
                        "duration_ms": {
                          "description": "Public duration ms value used to scope this lookup.",
                          "minimum": 0,
                          "type": "integer"
                        },
                        "provider": {
                          "description": "Public provider value used to scope this lookup.",
                          "type": [
                            "string",
                            "null"
                          ]
                        }
                      },
                      "required": [
                        "provider",
                        "checked_at",
                        "cache",
                        "duration_ms"
                      ],
                      "type": "object"
                    },
                    "ok": {
                      "const": true,
                      "description": "Public ok value used to scope this lookup."
                    },
                    "version": {
                      "const": "1",
                      "description": "Package version whose public metadata should be checked."
                    }
                  },
                  "required": [
                    "ok",
                    "capability",
                    "version",
                    "data",
                    "meta"
                  ],
                  "type": "object"
                },
                "type": {
                  "type": "string"
                }
              },
              "required": [
                "type"
              ],
              "type": "object"
            }
          },
          "required": [
            "input"
          ],
          "type": "object"
        }
      }
    },
    "lastUpdated": "2026-10-25T18:17:59.149Z",
    "quality": {
      "l30DaysTotalCalls": 4,
      "l30DaysUniquePayers": 2,
      "lastCalledAt": "2026-10-25T18:17:58.761Z"
    },
    "resource": "https://http--forest-gas-station-mainnet--lcjl27p8lmjs.code.run/mcp/preflight",
    "serviceName": "Forest Agent Tools",
    "tags": [
      "mcp",
      "agent"
    ],
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "Read-only MCP handshake/tools-list preflight; no destructive tool calls. Base mainnet USDC"
}

What the leaf hashes

{"body":"5d0c16d690d815f60fcf5e82ac09a89d6acbd21de88637bfecda13d1310f9dd4","id":526326,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1793124785541038,"prev":76444,"subject":"x402_bazaar:https://http--forest-gas-station-mainnet--lcjl27p8lmjs.code.run/mcp/preflight","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. 0xb457cc001cf43ad7dfd1a753472fe9d34015e32bcdd3033d8bb1294c381ae2ec
2. 0x70468baf4d30793c70e598cb9a3d92fe5df7561b4d43032298fef1e9f702da47
3. 0x0bca5fe2bad29d997403547f80145b5e9dd0043d0b3006417e54412254a0f278
4. 0xcc48df4a4d40561efb2820924f9a2de267e63f55c1c0d0937ba6613bfeefc161
5. 0xb948846ca14ae4b1fb2178f631319eb49a0d6f00cd27e9314519f277da482fb9
6. 0x76cfd6183cffcd7f2c41e257662365cc36717bc989c9f97217a71f096fbaba60
7. 0x181f9b07cf37255f35922f1b9c14432267bc2c2ee826485cb39c04fa8f32c6cd
8. 0xb9ab90c3171376308c663521a3074b4118e5d996bc2f166804a7404e8b92e1a6
9. 0xb453973045d461028cb4506fef9e6218a986a7416071f2ed88a2fbcf3d35558d
10. 0x7efb94cf0e8a662765a8c6efbfdc9dd1bc38bb8ad63eb2e0dbae156f58153fc3
11. 0x43473c302050eee376e0169659011f058a2eb8fc7d53a2ea0d1198e0f6d2a335
12. 0x305c0e886bebb6df8123db384ccd0d5bfc3ddf1de5fbf4edca0aea32f7e223a0
13. 0xf1104ea7df082465ff9df25ed29be80a0ac7c1c6b25c289b5d2e6ae5e6331952
14. 0x87cb8935612c40b569de008a9bf8218cd24a06f74a7364a1654613d972fe00ed
15. 0xec7bb68216a4deb1960acfbbd75da88f7e468b58adb9cf3ec62f2790e46508b3
16. 0x64c405a28e8819716221eb2529fe4ce277ab08025e17e685cbd5ece75ceb75c7
17. 0xf30fddbf4811226c58e8f0daf36fddd79fc5f1356b592bb1d99a8061ddbabe66
18. 0x2bf8151e5f157dd183b9de6fa00469551932a7a6e3f33a694895000ac9061197
19. 0x9fc354c0ea3efc3f1b6548bb77ea902a50f2c9647647ea61592efce2bd795699

Day root

0xdd77e5e99da32c3f154180d63e3c3e6fe11e896a2c6896412ef6b5c4bcf7e795

Chained

0x23bb4dfd09f55c15ac3962f53578e02c6114d5bfd9bb451cf8794fb6e2817ef4

Published

On Arc Testnet, block 69414147: 0xb2ebd83aafeb765a0ce66e76aefb133ed06606c98038fd56191e2bcd1dcb77b4