Evidence row 125526

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://x402-trust.com/v1/similar"
    ]
  ],
  "name": "x402 Trust Alternatives",
  "owner_address": "0xbbecbe90f28632a9d52ed67b33b43767b8c89285",
  "raw": {
    "accepts": [
      {
        "amount": "5000",
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "maxTimeoutSeconds": 120,
        "network": "eip155:8453",
        "outputSchema": {
          "input": {
            "bodyFields": {
              "limit": {
                "description": "Max alternatives to return (1-25, default 5).",
                "required": false,
                "type": "number"
              },
              "minScoreDelta": {
                "description": "Minimum trust-score advantage an alternative must have over the subject (default 5).",
                "required": false,
                "type": "number"
              },
              "resource": {
                "description": "Full x402 resource URL to find better alternatives for (must be in our observation set).",
                "required": true,
                "type": "string"
              }
            },
            "bodyType": "json",
            "headerFields": {
              "PAYMENT-SIGNATURE": {
                "description": "Base64-encoded JSON PaymentPayload; auto-filled by x402 clients.",
                "required": true,
                "type": "string"
              }
            },
            "method": "POST",
            "type": "http"
          },
          "output": {
            "alternatives": "array",
            "count": "number",
            "resource": "string",
            "subject": "object"
          }
        },
        "payTo": "0xbBECBE90F28632a9d52ed67b33b43767b8c89285",
        "scheme": "exact"
      }
    ],
    "description": "Semantically similar endpoints that currently out-score a given one on the trust score. Each carries score, grade, similarity, advertised price, and endpoint page; same-host siblings and avoid-flagged endpoints are excluded. An empty list means nothing beats the subject.",
    "extensions": {
      "bazaar": {
        "category": "data",
        "discoverable": true,
        "info": {
          "input": {
            "body": {
              "limit": 5,
              "resource": "https://api.example.com/v1/thing"
            },
            "bodyType": "json",
            "method": "POST",
            "type": "http"
          },
          "output": {
            "example": {
              "alternatives": [
                {
                  "amountUsd": 0.001,
                  "endpointPage": "https://x402-trust.com/endpoint/12345",
                  "grade": "A",
                  "network": "eip155:8453",
                  "priceCeiling": false,
                  "recommendation": "proceed",
                  "resource": "https://api.better.com/v1/thing",
                  "score": 88.1,
                  "similarity": 0.912
                }
              ],
              "count": 2,
              "note": "Semantically similar endpoints that out-score the subject. Similarity is cosine over description embeddings.",
              "resource": "https://api.example.com/v1/thing",
              "subject": {
                "grade": "C",
                "inObservationSet": true,
                "score": 61.2,
                "vectorized": true
              }
            },
            "type": "json"
          }
        },
        "schema": {
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "properties": {
            "input": {
              "additionalProperties": false,
              "properties": {
                "body": {
                  "properties": {
                    "limit": {
                      "type": "integer"
                    },
                    "resource": {
                      "type": "string"
                    }
                  },
                  "required": [
                    "resource",
                    "limit"
                  ],
                  "type": "object"
                },
                "bodyType": {
                  "enum": [
                    "json",
                    "form-data",
                    "text"
                  ]
                },
                "method": {
                  "enum": [
                    "GET",
                    "POST",
                    "PUT",
                    "PATCH",
                    "DELETE",
                    "HEAD"
                  ]
                },
                "type": {
                  "const": "http"
                }
              },
              "required": [
                "type",
                "method",
                "bodyType",
                "body"
              ],
              "type": "object"
            },
            "output": {
              "properties": {
                "example": {
                  "properties": {
                    "alternatives": {
                      "items": {
                        "properties": {
                          "amountUsd": {
                            "type": "number"
                          },
                          "endpointPage": {
                            "type": "string"
                          },
                          "grade": {
                            "type": "string"
                          },
                          "network": {
                            "type": "string"
                          },
                          "priceCeiling": {
                            "type": "boolean"
                          },
                          "recommendation": {
                            "type": "string"
                          },
                          "resource": {
                            "type": "string"
                          },
                          "score": {
                            "type": "number"
                          },
                          "similarity": {
                            "type": "number"
                          }
                        },
                        "required": [
                          "resource",
                          "score",
                          "grade",
                          "recommendation",
                          "similarity",
                          "amountUsd",
                          "priceCeiling",
                          "network",
                          "endpointPage"
                        ],
                        "type": "object"
                      },
                      "type": "array"
                    },
                    "count": {
                      "type": "integer"
                    },
                    "note": {
                      "type": "string"
                    },
                    "resource": {
                      "type": "string"
                    },
                    "subject": {
                      "properties": {
                        "grade": {
                          "type": "string"
                        },
                        "inObservationSet": {
                          "type": "boolean"
                        },
                        "score": {
                          "type": "number"
                        },
                        "vectorized": {
                          "type": "boolean"
                        }
                      },
                      "required": [
                        "score",
                        "grade",
                        "inObservationSet",
                        "vectorized"
                      ],
                      "type": "object"
                    }
                  },
                  "required": [
                    "resource",
                    "subject",
                    "count",
                    "alternatives",
                    "note"
                  ],
                  "type": "object"
                },
                "type": {
                  "type": "string"
                }
              },
              "required": [
                "type"
              ],
              "type": "object"
            }
          },
          "required": [
            "input"
          ],
          "type": "object"
        },
        "tags": [
          "x402",
          "similar",
          "discovery",
          "routing",
          "score"
        ]
      }
    },
    "lastUpdated": "2026-10-15T08:37:15.906Z",
    "quality": {
      "l30DaysTotalCalls": 1,
      "l30DaysUniquePayers": 1,
      "lastCalledAt": "2026-10-15T08:37:15.616Z"
    },
    "resource": "https://x402-trust.com/v1/similar",
    "serviceName": "x402 Trust Alternatives",
    "tags": [
      "x402",
      "trust",
      "reliability",
      "monitoring",
      "uptime"
    ],
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "Semantically similar endpoints that currently out-score a given one on the trust score. Each carries score, grade, similarity, advertised price, and endpoint page; same-host siblings and avoid-flagged endpoints are excluded. An empty list means nothing beats the subject."
}

What the leaf hashes

{"body":"d1bc610315a32536faf3b0fcb53f0e7778d556b7fcb1ba83a010ecbcfcbdbd39","id":125526,"kind":"listing","method":"baseline/1","observed_us":1793025626427852,"prev":null,"subject":"x402_bazaar:https://x402-trust.com/v1/similar","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. 0x0d7bc519f4b8934b7267ae18e5d7be28572407d6044bcfc97ed6f8e3f7ac52d8
2. 0x895428867c3eea3ec2fdbb13caf083d325ec6630b264b2df4722a10693d3565c
3. 0xb5667bc5676c1b87ab29021d925aa6d368d141736d5fd3d5b69395b819928231
4. 0x88c4f1db6f6768c7d2af9b67ec3b6dc6b119591506bf96a301e5130c6e89acf2
5. 0x66f4c4f2768596e6f9d0a501c7b40b4bb3737079ee788dbea6b6241403219265
6. 0x7e0f7e0f579fb3b32ade5d31a1079026340acf083c497d76822d71cdaf295053
7. 0xb599757409501fddf07bfba32e5378be4cb7c31f615332fa87bee75b519660f1
8. 0xc9745dca0e36b6f872dc3de29378a497cf2d93f4c139bfd1d8f959282fad45aa
9. 0x11453579365b464f8ae186361df4e55e1fa62386275493eb4eb12feb14626e3d
10. 0x6660c80902a0d0eb7e099a74231019f561e7aad745384cd90bc57b2aac09aef3
11. 0xce6314435eaa4c458576d2a1150a919748260a8a10f1eae96b7a8bc75ff32536
12. 0x362683225b724b8d2d652a95968c57a6f4199ed4f2ad60900fc3603492f17520
13. 0x5aefcf9e3d86e125861c0d490079969110eea8fc901ec61531bba10bb58258a1
14. 0xa96bb9408ce00a0d40ddaba8736257dfce76d5478b131d69db1afdf8a824312b
15. 0x7ddc2fead128357f881b63e6c7c26d7fbbb84fca6c7c8e0bbfe386de86ca8d39
16. 0xc6a4d7899a0f442958e26505011190b7cff2483611c1b94eba9043e0ba9ac36e
17. 0x8c756542e482157df0c36464d75c937b845e4423dbbcfad08f0cf8d5a16b9a13
18. 0x20704208aa6923d6b2450ef74ede87a6e0265d46447926038fe9506e9e154b2d
19. 0x9b9ce5b74b9bab5121612ef6b64920a8d453cbf311096a423eef9702747e868a

Day root

0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8

Chained

0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a

Published

On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae