Evidence row 3964412

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://agents.supremeai.ca/v1/health-check"
    ]
  ],
  "name": "supremeai",
  "owner_address": "0xb65c6f9187195f4f9215b285d67d798b0162ca31",
  "raw": {
    "accepts": [
      {
        "amount": "3000",
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "maxTimeoutSeconds": 300,
        "network": "eip155:8453",
        "payTo": "0xb65c6F9187195f4f9215b285d67D798b0162cA31",
        "scheme": "exact"
      }
    ],
    "description": "Probe a public HTTP(S) URL and report availability: up/down, HTTP status, and latency in ms. Use it to check whether another paid API or x402 service is alive before spending money calling it. Public internet targets only.",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "body": {
              "url": "https://example.com"
            },
            "bodyType": "json",
            "method": "POST",
            "type": "http"
          },
          "output": {
            "example": {
              "latency_ms": 42,
              "status": 200,
              "up": true,
              "url": "https://example.com"
            },
            "type": "json"
          }
        },
        "schema": {
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "properties": {
            "input": {
              "additionalProperties": false,
              "properties": {
                "body": {
                  "properties": {
                    "url": {
                      "description": "absolute http(s) URL",
                      "type": "string"
                    }
                  },
                  "required": [
                    "url"
                  ],
                  "type": "object"
                },
                "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": {
                  "properties": {
                    "error": {
                      "type": "string"
                    },
                    "latency_ms": {
                      "type": [
                        "integer",
                        "null"
                      ]
                    },
                    "status": {
                      "type": [
                        "integer",
                        "null"
                      ]
                    },
                    "up": {
                      "type": "boolean"
                    },
                    "url": {
                      "type": "string"
                    }
                  },
                  "type": "object"
                },
                "type": {
                  "type": "string"
                }
              },
              "required": [
                "type"
              ],
              "type": "object"
            }
          },
          "required": [
            "input"
          ],
          "type": "object"
        }
      }
    },
    "lastUpdated": "2026-10-30T01:19:18.16Z",
    "quality": {
      "l30DaysTotalCalls": 8,
      "l30DaysUniquePayers": 7,
      "lastCalledAt": "2026-10-30T01:19:17.917Z"
    },
    "resource": "https://agents.supremeai.ca/v1/health-check",
    "serviceName": "supremeai",
    "tags": [
      "monitoring",
      "uptime",
      "agent-ops",
      "health"
    ],
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "Probe a public HTTP(S) URL and report availability: up/down, HTTP status, and latency in ms. Use it to check whether another paid API or x402 service is alive before spending money calling it. Public internet targets only."
}

What the leaf hashes

{"body":"01b74bf8425b24b306da33c05eec32628f7ecaaecfdbb7442ca0d31a0849e920","id":3964412,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1794083323058998,"prev":2631367,"subject":"x402_bazaar:https://agents.supremeai.ca/v1/health-check","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. 0x56a7affb950e8a419cd538304794dd41a4e3b7874df5fc158aeb498322c937b5
2. 0xb861c3fa831bdfa3f960dfc229243cf5f0846792affc040c1a0c72efb7e9ac86
3. 0x97c827ad5d5e1ee02322928e9dd788d18dc737d878dbc80f97921bf6464c9767
4. 0xf3ef5a7ecd4c79bfcba3a84923033fe4b55aa415a502e2d972b9f1b240a384a5
5. 0x95c2d69270581b5708e3834e887ee56f95fd80c02c8c8d67f76cc9b824bf2414
6. 0x0a08200dca3e8775ec3881f1235e2a24376589cb70a26b7965dbf0aa760e8f64
7. 0x85e323254921630efe1914d4543ac4ac9ac30ab7d61022632ba15d759597e77f
8. 0x5b8db2c22f43c3e2617468677b246ee3647b67cdf4fdeb5dc1a58589a839c3ed
9. 0x245699295197ee7e0059fb308723242ffc56e142ff630a97028bdd1b125f1dd5
10. 0x6ba326902614573f455a2cd0740e087c32aa46c5b6637c5455ac205550006821
11. 0xf88d7fa0ccb1b1458dc1831c47ade6bdce0aae6e3ca03b27d89b232e68e46365
12. 0xb445cc0685d8f6f3695f9f40dbf88753c44732bee2f061fb1df4542940b9d87c
13. 0xc3b5a5b5deec688de4c1e547f1f861e0aa4ab6641dd79f6e7e20b0e5a09c6cd8
14. 0x712cc609388442c0171a13fe8c2149c1d02ab5643adc1ab035eb3abf53adbae9
15. 0x9127f3a0ab829dab5d80217ddc8d077053e20f2e260baed043c8a97478ebb2bf
16. 0x9108c80d13a11b7549b554924410a7c5d215a2cd03aee9659ca627cb099f1a2e
17. 0x3b69f6d98c91b21287021db092e52491474f0d08438393ac130d6a3c273bcd4a
18. 0xff23fa8a9de3f957315ef0dfe7e8d8f6b1a51dae05fef7615c59794e019ff05c

Day root

0x17da9e85e1b138541355d33543ff34e3503cd3a49d37728fb53643e2a0416a2d

Chained

0xed34bd4af17282643de8cb9591c84d0aa1b39e1e9ae9864941e543f5a15718cb

Published

On Arc Testnet, block 71280839: 0xc3f6784179e0ca32236ba89472473e882a81d03fcc5ce27ca58ded2e01e112aa