Evidence row 73237

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://deadchannel.vercel.app/probe"
    ]
  ],
  "name": "deadchannel",
  "owner_address": "0x712c78928080adb009e31315c0c3c7473da9648a",
  "raw": {
    "accepts": [
      {
        "amount": "5000",
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "maxTimeoutSeconds": 120,
        "network": "eip155:8453",
        "payTo": "0x712c78928080Adb009E31315c0c3c7473dA9648a",
        "scheme": "exact"
      },
      {
        "amount": "5000",
        "asset": "31566704",
        "extra": {
          "feePayer": "ZMFK2OI7ZBD2U27ISERZC4S6LKM6WMFJPZQ4MYNJDZ2VNBNMBA67RA22AA",
          "tag": "x402-global-challenge"
        },
        "maxTimeoutSeconds": 120,
        "network": "algorand:wGHE2Pwdvd7S12BL5FaOP20EGYesN73ktiC1qzkkit8=",
        "payTo": "NLT4P2QFI3OO3PTLQHQXCAM2RA2Y7T4RZZKZF43BLMBKDFPFX54ZLDY2JU",
        "scheme": "exact"
      },
      {
        "amount": "5000",
        "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
        "extra": {
          "feePayer": "3uCK3sWUFZPPBdLBYskYvUnAgJV9HYXvptgHcdti69qo"
        },
        "maxTimeoutSeconds": 120,
        "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
        "payTo": "9FDr6dYrxCRZYeaiXB86MqA9fuC3j5nH5u5fSQvD6QWd",
        "scheme": "exact"
      }
    ],
    "description": "Use before paying an x402 endpoint you have not used before, when you cannot tell a working seller from a trap, a testnet address dressed as mainnet, or a listing whose price no longer matches its challenge. Returns a verdict — live, degraded, trap, testnet or dead — a 0-100 risk score, and the specific findings behind both, so an agent can decline a bad endpoint instead of learning about it by losing the money. Costs less than the smallest payment it protects.",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "body": {
              "url": "https://api.example.com/paid-endpoint"
            },
            "bodyType": "json",
            "method": "POST",
            "type": "http"
          },
          "output": {
            "example": {
              "latencyMs": {
                "p50": 180,
                "p99": 240
              },
              "priceUsd": 0.01,
              "problems": [
                {
                  "detail": "No input or output schema.",
                  "id": "schema-advertised",
                  "status": "warn"
                }
              ],
              "risk": 25,
              "url": "https://api.example.com/paid-endpoint",
              "verdict": "degraded"
            },
            "type": "json"
          }
        },
        "schema": {
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "properties": {
            "input": {
              "properties": {
                "body": {
                  "properties": {
                    "method": {
                      "description": "HTTP verb the resource expects, if known",
                      "type": "string"
                    },
                    "samples": {
                      "description": "Probes to take, 1-5 (default 2)",
                      "type": "number"
                    },
                    "url": {
                      "description": "The x402 resource URL to check",
                      "type": "string"
                    }
                  },
                  "required": [
                    "url"
                  ],
                  "type": "object"
                }
              },
              "type": "object"
            },
            "output": {
              "properties": {
                "example": {
                  "properties": {
                    "latencyMs": {
                      "properties": {
                        "p50": {
                          "type": "number"
                        },
                        "p99": {
                          "type": "number"
                        }
                      },
                      "type": "object"
                    },
                    "priceUsd": {
                      "type": "number"
                    },
                    "problems": {
                      "items": {
                        "properties": {
                          "detail": {
                            "type": "string"
                          },
                          "id": {
                            "type": "string"
                          },
                          "status": {
                            "type": "string"
                          }
                        },
                        "type": "object"
                      },
                      "type": "array"
                    },
                    "risk": {
                      "type": "number"
                    },
                    "url": {
                      "type": "string"
                    },
                    "verdict": {
                      "type": "string"
                    }
                  },
                  "type": "object"
                }
              },
              "type": "object"
            }
          },
          "type": "object"
        }
      }
    },
    "lastUpdated": "2026-10-24T01:24:45.534Z",
    "quality": {
      "l30DaysTotalCalls": 6,
      "l30DaysUniquePayers": 5,
      "lastCalledAt": "2026-10-24T01:24:45.396Z"
    },
    "resource": "https://deadchannel.vercel.app/probe",
    "serviceName": "deadchannel",
    "tags": [
      "preflight",
      "payment-guard",
      "x402",
      "risk",
      "agent-safety"
    ],
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "Use before paying an x402 endpoint you have not used before, when you cannot tell a working seller from a trap, a testnet address dressed as mainnet, or a listing whose price no longer matches its challenge. Returns a verdict — live, degraded, trap, testnet or dead — a 0-100 risk score, and the specific findings behind both, so an agent can decline a bad endpoint instead of learning about it by losing the money. Costs less than the smallest payment it protects."
}

What the leaf hashes

{"body":"df7d7f81b23632f20902c2f997e470c9898b8dac9e6519686840601f33b029d0","id":73237,"kind":"listing","method":"baseline/1","observed_us":1793025487202589,"prev":null,"subject":"x402_bazaar:https://deadchannel.vercel.app/probe","subject_kind":"source_record"}

Proof

Fold these into the leaf in order, hashing each sorted pair with keccak256, to reach the root of 2026-10-26 (296695 rows).

1. 0xb351e9e382ca2a5438f75797bd4e0586cb9af0b4ba00d92b6c36c2e5c0a26d24
2. 0xefd43b6a92c51a87325591fc507461fff99e4f3db0941e071e2c456b40f39d49
3. 0x74e46e2b59828e47b4917d04b50e4125a4f53f1e83b540c7c26820ee61795aa6
4. 0xd02c38018f13b435d48bc087305ce21bb1e9cc986270d8f256b610a79100feec
5. 0x3a2c719910b7c66cc3adb3ad88f24f2bba6888ba3355b2d1e29e02584d3e802b
6. 0x79df8da5938684f06f252dd5851cdfd0285cd71c158a9f2d08ca495d79729ce0
7. 0x5d35fe2775c723e07100a4be2381ac9d207169f839c6d0d0065dc499a24ec283
8. 0xf3688185f2d429481816af99e280cd04f8084a3802334b2526b36fbdcfcfbbf2
9. 0x18d9426eda026cbd6d9499d352c359876563a8e5b407631f000ddd6e159a6e2a
10. 0x02f72c34cadc7e4285efd87b76cb403220f4a25cdad402e412233c0a44206107
11. 0xc50bb1c2185da1e4294f4829be5412051ce30550dd05a2a26962841b3ba2399d
12. 0x3d6ec9d5ef8daa604601742088e213da0a439db6eff6ce50ec3ffb264a60ddd3
13. 0x3b1c0e225d1b1cb24cd5d5ea4af2de20ed68a1eaf8b61924ed1b81e4b9cf7e39
14. 0x083427e39db4dd470662401f6db5db8fadf084fc4274cf8621b368416952b78b
15. 0x1a74ed3b3756b9cd946da49701bcec120ec88645013da99fa9eea60b39e1a570
16. 0x123ec8bee20ddc55223eeef5a4f4d6c4b6416515adbb911c56759f5cde56e452
17. 0xd0651cb9bc8155eb52b5247d506e74b8a935057dc190ba52091702ac25ed3a40
18. 0x9a9024edb5069d88a324facb310a5ce8e495214bbaa968f077bede437390194f
19. 0x9b9ce5b74b9bab5121612ef6b64920a8d453cbf311096a423eef9702747e868a

Day root

0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8

Chained

0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a

Published

On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae