Evidence row 2202160

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://vuln-intel.x402tookit.com/epss-score"
    ]
  ],
  "name": "Vulnerability Intelligence",
  "owner_address": "0xb531320805c5bed1d46aeadcf4f008fdf172dbda",
  "raw": {
    "accepts": [
      {
        "amount": "20000",
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "maxTimeoutSeconds": 300,
        "network": "eip155:8453",
        "payTo": "0xb531320805C5BED1D46AEaDcF4F008FDF172DBDa",
        "scheme": "exact"
      },
      {
        "amount": "20000",
        "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
        "extra": {
          "feePayer": "D6ZhtNQ5nT9ZnTHUbqXZsTx5MH2rPFiBBggX4hY1WePM",
          "transactionVersions": [
            0
          ]
        },
        "maxTimeoutSeconds": 300,
        "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
        "payTo": "DUPiupXtuox38dcGoXUKer5mAydCzmaHjrbQ66qeEm8s",
        "scheme": "exact"
      },
      {
        "amount": "20000",
        "asset": "0x3c499c542cEF5E3811e1192ce70d8cC03d5c3359",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "maxTimeoutSeconds": 300,
        "network": "eip155:137",
        "payTo": "0xb531320805C5BED1D46AEaDcF4F008FDF172DBDa",
        "scheme": "exact"
      },
      {
        "amount": "20000",
        "asset": "0xaf88d065e77c8cC2239327C5EDb3A432268e5831",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "maxTimeoutSeconds": 300,
        "network": "eip155:42161",
        "payTo": "0xb531320805C5BED1D46AEaDcF4F008FDF172DBDa",
        "scheme": "exact"
      }
    ],
    "description": "EPSS exploit-probability score and percentile for up to 10 CVEs, ranked, with a high/elevated/low verdict.",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "method": "GET",
            "queryParams": {
              "cves": "CVE-2021-44228,CVE-2023-4863"
            },
            "type": "http"
          },
          "output": {
            "example": {
              "asOf": "2026-10-23T03:17:23.209Z",
              "degraded": false,
              "disclaimer": "Screening signal computed from the named public source. Not financial, legal or investment advice; provided as is. Verify at the source before acting.",
              "notChecked": [
                "actual exploitation (see /kev-check)",
                "severity"
              ],
              "reasons": [
                "EPSS estimates the chance of exploitation activity in the next 30 days; it is not severity.",
                "EPSS is provided by FIRST (first.org/epss)."
              ],
              "scores": [
                {
                  "asOf": "2026-10-22",
                  "cve": "CVE-2021-44228",
                  "percentile": 1,
                  "probability": 0.99999
                },
                {
                  "asOf": "2026-10-22",
                  "cve": "CVE-2023-4863",
                  "percentile": 0.99981,
                  "probability": 0.99979
                }
              ],
              "source": "FIRST EPSS",
              "sourceUrl": "https://api.first.org/data/v1/epss",
              "summary": "Highest: CVE-2021-44228 at 100% (percentile 100).",
              "thresholds": {
                "elevatedAtLeast": 0.1,
                "highAtLeast": 0.5
              },
              "verdict": "HIGH_EXPLOIT_PROBABILITY"
            },
            "type": "json"
          }
        },
        "schema": {
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "properties": {
            "input": {
              "additionalProperties": false,
              "properties": {
                "method": {
                  "enum": [
                    "GET"
                  ],
                  "type": "string"
                },
                "queryParams": {
                  "properties": {
                    "cves": {
                      "description": "Comma-separated CVE ids, up to 10",
                      "type": "string"
                    }
                  },
                  "required": [
                    "cves"
                  ],
                  "type": "object"
                },
                "type": {
                  "const": "http",
                  "type": "string"
                }
              },
              "required": [
                "type",
                "method"
              ],
              "type": "object"
            },
            "output": {
              "properties": {
                "example": {
                  "properties": {
                    "asOf": {
                      "type": [
                        "null",
                        "string"
                      ]
                    },
                    "degraded": {
                      "type": [
                        "boolean",
                        "null"
                      ]
                    },
                    "disclaimer": {
                      "type": [
                        "null",
                        "string"
                      ]
                    },
                    "notChecked": {
                      "items": {
                        "type": "string"
                      },
                      "type": [
                        "array",
                        "null"
                      ]
                    },
                    "reasons": {
                      "items": {
                        "type": "string"
                      },
                      "type": [
                        "array",
                        "null"
                      ]
                    },
                    "scores": {
                      "items": {
                        "properties": {
                          "asOf": {
                            "type": [
                              "null",
                              "string"
                            ]
                          },
                          "cve": {
                            "type": [
                              "null",
                              "string"
                            ]
                          },
                          "percentile": {
                            "type": [
                              "null",
                              "number"
                            ]
                          },
                          "probability": {
                            "type": [
                              "null",
                              "number"
                            ]
                          }
                        },
                        "type": "object"
                      },
                      "type": [
                        "array",
                        "null"
                      ]
                    },
                    "source": {
                      "type": [
                        "null",
                        "string"
                      ]
                    },
                    "sourceUrl": {
                      "type": [
                        "null",
                        "string"
                      ]
                    },
                    "summary": {
                      "type": [
                        "null",
                        "string"
                      ]
                    },
                    "thresholds": {
                      "properties": {
                        "elevatedAtLeast": {
                          "type": [
                            "null",
                            "number"
                          ]
                        },
                        "highAtLeast": {
                          "type": [
                            "null",
                            "number"
                          ]
                        }
                      },
                      "type": [
                        "null",
                        "object"
                      ]
                    },
                    "verdict": {
                      "type": [
                        "null",
                        "string"
                      ]
                    }
                  },
                  "type": "object"
                },
                "type": {
                  "type": "string"
                }
              },
              "required": [
                "type"
              ],
              "type": "object"
            }
          },
          "required": [
            "input"
          ],
          "type": "object"
        }
      }
    },
    "lastUpdated": "2026-11-01T22:39:41.263Z",
    "quality": {
      "l30DaysTotalCalls": 2,
      "l30DaysUniquePayers": 1,
      "lastCalledAt": "2026-11-01T22:39:40.969Z"
    },
    "resource": "https://vuln-intel.x402tookit.com/epss-score",
    "serviceName": "Vulnerability Intelligence",
    "tags": [
      "epss",
      "cve",
      "exploit-probability"
    ],
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "EPSS exploit-probability score and percentile for up to 10 CVEs, ranked, with a high/elevated/low verdict."
}

What the leaf hashes

{"body":"2f411a43f0882f25b408074e44cb29ea8360b293a0a31ea143bd1b97d15a55d4","id":2202160,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1793646813531153,"prev":null,"subject":"x402_bazaar:https://vuln-intel.x402tookit.com/epss-score","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. 0x20c3b0c2f5f6271dc5faf824f263b440586c35284ccfbd1c2f271b881a17cb19
2. 0x61e418ec59068e6cbb0c31b8fab1fc9d62313c21fb11465af96a7701a54372c3
3. 0x7db0d313a55250d3a36af9e4781d30bde25b248c73fdb69292a7ab136387911c
4. 0xd8cd64439866fbbdf7869e25b319b87b92ad27865880c44bbf06a5c390d82b7f
5. 0xbd821b9c4c3b6a640dd2c9d946f963484efbafebf05aeb1bf2bd22405892acd4
6. 0x9fc250e6a538a4f63401dd7628fa46422a469784944fc70356101b3366132321
7. 0xd32bdef3edda7a78b5c4a1098450bdfded69da52df885b339a36aed0b4194d66
8. 0x65f68ccbb3c22db8cfd0eb7628f89f6ff2ae9fbca22c4c49fb02341d69216e08
9. 0x632341670db8db822a78f37a28d006e4acb1a972d4538a81334cdef3bd6a3800
10. 0x610e10c8d4b54f541294cd8c62f5267847fecd6a782f4f5d3521978fff3ce086
11. 0x193993dfc99f07e76a7959bf301447a777bda89110f903e9197b34093694d0e4
12. 0x0287e9d9530add05d7480c4266f19be69f45ecae1d0e3ec844ff635060819eb8
13. 0x350e03a59bf81961fd9ce694f08f9ba0239d9ea2496b0c0dc7998c9e9855326f
14. 0xc63937235d47ff2107de3051477e395be67b96d91d1349c787bf4b1ef91b602f
15. 0xcd21ec8d72a18a2d4513e4fd309abbb530810fb1dbeecd4b9b85acb4d6ff8f12
16. 0xac40f077ca4be8c3432a67771725cc315e8101fc2649999cfad2c900a7640e27
17. 0x53a741b69e9e51c4a288a74712aa6ac3fb28c8923cd3e6461d161c4f2d48b31a
18. 0x050f2978b537f7afb21ee1551577cdf146d1c56f4df12d24315ae5e69366b0a4
19. 0x365b161a4b68d750dcc4b3ecce1154a2163c87b08762079428e68f0ebb6a754e

Day root

0x78fecaabbe319e56f5c4b80fc02e2052e198ad24781da8832a475ff65f2002d1

Chained

0xdc35957db5d1371ca382b9152878ffece28ec7c5cb4f98fd71ddb367f8b999b2

Published

On Arc Testnet, block 70432815: 0x56b814612eb2e3e544153df3e91e1f7199106d1e430c7d8c6b653feeb9ebe9af