Evidence row 120042

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://saylorinnovations.com/api/json/validate"
    ]
  ],
  "name": "Saylor Innovations Dev Tools",
  "owner_address": "0xa2a8df0f7caabea4e120a2568118f141569fc8aa",
  "raw": {
    "accepts": [
      {
        "amount": "10000",
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "assetTransferMethod": "eip3009",
          "facilitatorOnly": true,
          "memo": "saylor:devkit:json-validate",
          "name": "USD Coin",
          "note": "Base settles through an x402 facilitator. Send payload.signature and payload.authorization (EIP-3009); there is no self-submitted path on this network.",
          "version": "2"
        },
        "maxTimeoutSeconds": 120,
        "network": "eip155:8453",
        "payTo": "0xA2A8dF0f7CaaBEa4e120a2568118f141569fc8aa",
        "scheme": "exact"
      },
      {
        "amount": "10000",
        "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
        "extra": {
          "feePayer": "BENrLoUbndxoNMUS5JXApGMtNykLjFXXixMtpDwDR9SP",
          "memo": "saylor:devkit:json-validate",
          "reference": "HxtSw49tF5rChrVLyv4cWQGUdVMRirXC23RSDBuUnqyo",
          "session": "eyJhcnRpY2xlSWQiOiJkZXZraXQ6anNvbi12YWxpZGF0ZSIsInJlZmVyZW5jZSI6Ikh4dFN3NDl0RjVyQ2hyVkx5djRjV1FHVWRWTVJpclhDMjNSU0RCdVVucXlvIiwicmVjaXBpZW50IjoiN0xTamZySmY4Zk5zQjhWQTl1N04zV0VuMjVzbVFMcG9iM1N2eVV2WGFjeTciLCJtaW50IjoiRVBqRldkZDVBdWZxU1NxZU0ycU4xeHp5YmFwQzhHNHdFR0drWnd5VER0MXYiLCJtaW5BbW91bnQiOjEwMDAwLCJleHAiOjE3OTIyMzU0Njc4NDh9.TPHCgxp22M6LOgdSSts0QfHucimgLYWzLa7ff0iyXek"
        },
        "maxTimeoutSeconds": 120,
        "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
        "payTo": "7LSjfrJf8fNsB8VA9u7N3WEn25smQLpob3SvyUvXacy7",
        "scheme": "exact"
      }
    ],
    "description": "JSON validator - checks whether text is valid JSON, with type, size, depth, key count and error line and column",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "method": "GET",
            "queryParams": {
              "json": "{\"a\":[1,2,{\"b\":null}]}"
            },
            "type": "http"
          },
          "output": {
            "example": {
              "bytes": 22,
              "max_depth": 3,
              "top_level_items": 1,
              "total_keys": 2,
              "type": "object",
              "valid": true
            },
            "type": "json"
          }
        },
        "schema": {
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "properties": {
            "input": {
              "additionalProperties": false,
              "properties": {
                "method": {
                  "enum": [
                    "GET",
                    "POST",
                    "PUT",
                    "PATCH",
                    "DELETE",
                    "HEAD"
                  ],
                  "type": "string"
                },
                "queryParams": {
                  "properties": {
                    "json": {
                      "description": "JSON text to validate (max 100,000 chars)",
                      "type": "string"
                    }
                  },
                  "required": [
                    "json"
                  ],
                  "type": "object"
                },
                "type": {
                  "const": "http",
                  "type": "string"
                }
              },
              "required": [
                "type",
                "method"
              ],
              "type": "object"
            },
            "output": {
              "properties": {
                "example": {
                  "properties": {
                    "bytes": {
                      "description": "Size in bytes",
                      "type": "number"
                    },
                    "checked_at": {
                      "description": "Time the check was run (UTC)",
                      "type": [
                        "string",
                        "null"
                      ]
                    },
                    "column": {
                      "type": [
                        "number",
                        "null"
                      ]
                    },
                    "error": {
                      "description": "Error message, if any",
                      "type": "string"
                    },
                    "line": {
                      "description": "Line number or text of the line",
                      "type": [
                        "number",
                        "null"
                      ]
                    },
                    "max_depth": {
                      "description": "Max depth",
                      "type": "number"
                    },
                    "top_level_items": {
                      "description": "Top level items",
                      "type": [
                        "number",
                        "null"
                      ]
                    },
                    "total_keys": {
                      "description": "Total keys",
                      "type": "number"
                    },
                    "type": {
                      "description": "Type or kind",
                      "type": "string"
                    },
                    "valid": {
                      "description": "True when the input passed validation",
                      "type": "boolean"
                    }
                  },
                  "required": [
                    "valid"
                  ],
                  "type": "object"
                },
                "type": {
                  "const": "json",
                  "type": "string"
                }
              },
              "required": [
                "type"
              ],
              "type": "object"
            }
          },
          "required": [
            "input"
          ],
          "type": "object"
        }
      }
    },
    "iconUrl": "https://res.cloudinary.com/bdb-prod/image/upload/c_fill,ar_1:1,w_256,h_256,f_auto,q_auto/v1791811517/bazaar-icons/bc5e2b3d111ebbef.jpg",
    "lastUpdated": "2026-10-17T11:09:07.879Z",
    "quality": {
      "l30DaysTotalCalls": 2,
      "l30DaysUniquePayers": 2,
      "lastCalledAt": "2026-10-17T11:09:07.701Z"
    },
    "resource": "https://saylorinnovations.com/api/json/validate",
    "serviceName": "Saylor Innovations Dev Tools",
    "tags": [
      "json",
      "validate",
      "calculator"
    ],
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "JSON validator - checks whether text is valid JSON, with type, size, depth, key count and error line and column"
}

What the leaf hashes

{"body":"63566dc31d6e55018de4effc576171fc277a4aa95577721472d3c1b05a882443","id":120042,"kind":"listing","method":"baseline/1","observed_us":1793025617132887,"prev":null,"subject":"x402_bazaar:https://saylorinnovations.com/api/json/validate","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. 0x11a71a2b1cbf754e70611ca98ec9ba08fb8c03bf7eccdde878289f6cab0bebb7
2. 0xf62ed5eb72d3bde3e17673441da2ea99d3814b67fad76af0d8fa01281c6c40ef
3. 0x6fa79f86ede8d9030e21163718da6cac95baa021e52f536abc2beacf1c63f2d8
4. 0xc8133343618141d25fe81848d7c5135c8d248afba09f081efb92922583acd45b
5. 0x105f4a20bdb29ea161391e67f133389d63d3da45b6b4feb7a27bd1cce9fd8d4d
6. 0xdb311a56a4a20ce4e726cea02bb8c6a82fb217ec9bd8ff83656419030767ec83
7. 0x194ea65dce06e1bbf1fc62d7279e02e6d0f615a25887f49a7586cb3619684505
8. 0xc8ce4414b0ae427c5ba7c0ed1d58a5b9dfbbb15aee1b4a7e79fb299b23a03f2a
9. 0x4e785676cfd6ff09cb0e055fe7daa99aa723abff896550ea9581813c291f23dc
10. 0x970e7fce5d49f34f6b51af44a118952db23266c34d492098d84b4f12f45ecbff
11. 0xb3d22f508aaf8117a0a5454390284c48363baa096e225b30af56d708d8dcd0b3
12. 0xc02d9eff6ef94d46d90d54320548f18fc3f05787047265548577569253c19969
13. 0x294f7935f78a896b5f246a7c9a7ee1b023720acdb03fff3cd549c63479848ec9
14. 0xb49e8c2564256e5322e375cb619d9ac70fd17c1d1eba9c991bba4cb6428f45cc
15. 0x60582ab4b41e72eb70eb0bce07fbf0fb4d2b62a8bad5be50f5d16d511adc746c
16. 0xc6a4d7899a0f442958e26505011190b7cff2483611c1b94eba9043e0ba9ac36e
17. 0x8c756542e482157df0c36464d75c937b845e4423dbbcfad08f0cf8d5a16b9a13
18. 0x20704208aa6923d6b2450ef74ede87a6e0265d46447926038fe9506e9e154b2d
19. 0x9b9ce5b74b9bab5121612ef6b64920a8d453cbf311096a423eef9702747e868a

Day root

0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8

Chained

0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a

Published

On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae