Evidence row 752015

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://wafermap.xyz/v1/contract-check"
    ]
  ],
  "name": "wafermap.xyz/v1/contract-check",
  "owner_address": "0xefa0fdf4ca8fd79227fb9a19e5cfd24a2a864b81",
  "raw": {
    "accepts": [
      {
        "amount": "5000",
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "maxTimeoutSeconds": 120,
        "network": "eip155:8453",
        "payTo": "0xefa0FDf4Ca8FD79227fb9A19E5CFd24a2A864B81",
        "scheme": "exact"
      },
      {
        "amount": "5000",
        "asset": "0x5fc5360D0400a0Fd4f2af552ADD042D716F1d168",
        "extra": {
          "name": "Global Dollar",
          "version": "1"
        },
        "maxTimeoutSeconds": 120,
        "network": "eip155:4663",
        "payTo": "0xefa0FDf4Ca8FD79227fb9A19E5CFd24a2A864B81",
        "scheme": "exact"
      }
    ],
    "description": "Contract Check — Who owns it, is it a proxy, can supply still change. Read straight from bytecode and storage.",
    "extensions": {
      "bazaar": {
        "category": "onchain",
        "info": {
          "input": {
            "body": {
              "address": "0x5fc5360D0400a0Fd4f2af552ADD042D716F1d168",
              "network": "robinhood"
            },
            "bodyType": "json",
            "method": "POST",
            "type": "http"
          },
          "output": {
            "example": {
              "receipt": {
                "amountUsd": 0.005,
                "asset": "USDC",
                "ms": 1200,
                "network": "eip155:8453",
                "payer": "0x…",
                "tx": "0x…"
              },
              "resource": "contract-check",
              "result": "{ isContract, owner, proxy, implementation, notes[] }"
            },
            "type": "json"
          }
        },
        "schema": {
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "properties": {
            "input": {
              "additionalProperties": false,
              "properties": {
                "body": {
                  "additionalProperties": false,
                  "properties": {
                    "address": {
                      "description": "Token contract address (0x…).",
                      "pattern": "^0x[0-9a-fA-F]{40}$",
                      "type": "string"
                    },
                    "network": {
                      "description": "robinhood (default) or base.",
                      "enum": [
                        "robinhood",
                        "base"
                      ],
                      "type": "string"
                    }
                  },
                  "required": [
                    "address"
                  ],
                  "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": {
                  "type": "object"
                },
                "type": {
                  "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/v1793166422/bazaar-icons/5ef39b93b2d49e3c.png",
    "lastUpdated": "2026-10-28T05:51:00.38Z",
    "quality": {
      "l30DaysTotalCalls": 1,
      "l30DaysUniquePayers": 1,
      "lastCalledAt": "2026-10-28T05:51:00.255Z"
    },
    "resource": "https://wafermap.xyz/v1/contract-check",
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "Contract Check — Who owns it, is it a proxy, can supply still change. Read straight from bytecode and storage."
}

What the leaf hashes

{"body":"7921ed3e563dfc42cf1d8595a33133ac7b17ee63c1d954b673a26acc42d84fb0","id":752015,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1793178800358601,"prev":null,"subject":"x402_bazaar:https://wafermap.xyz/v1/contract-check","subject_kind":"source_record"}

Proof

Fold these into the leaf in order, hashing each sorted pair with keccak256, to reach the root of 2026-10-28 (231336 rows).

1. 0x5f54f8d0bd7ef687f3dfbc479be3f4adcfe35f15855eebae6ac54d16c262f61d
2. 0x49037ccbea759ab536afd22868762e763bd95c9cc4b5e21b45bc4aea1b299189
3. 0x33152c59c24cea92c0457c120f84cd9625a027e31674241c7f2679f4c98b6f56
4. 0xabbdd6590c1f9c11eae59444bf9fb80229a34056325771b9b7bf703962529e76
5. 0x82748b49bc54a7bfe841a7f386175785db7f26dc0a82dbb09bad873b2f81b0ce
6. 0x1f10edcd8742147b3520844c01e3bd42d402faac3108cde258224637f9587066
7. 0x7b0dad2d834dafa517ef9b0562e88e22311ad2bd7b076ac6d00d0c728600673b
8. 0x7fb76b67acec03f9fcb200584d2053a5ea9ed5ee18832fd7d50c791bc1e65638
9. 0xd6e29c037d313c80ad1c3f133fc89487dd984aafef274c34536f41dc19e9fb51
10. 0x9da0c3b92950878b3c1291daf1b8199bb14e7304450cbbd185c87e745e7b4888
11. 0x60092baa15b626d1471c65ad922fee1e1ef25ffe6ce503b232a651d88ee4db38
12. 0xde0ed5a99a265aff1ac56d5267182affd04ee042cab0cdeb668f49339e723a42
13. 0xef15c536e795866a8bfb1b8a73e9760d27d138ecef7ee9cc237288f3c6490bbc
14. 0x8db2587099a4011758c742fc2aad940742aa47abddf6007f131e0d5ab4a9e92b
15. 0xe6054de1f67b1e6f15bcf16d2b6536cf35dd9705fdf6ce59853e79784693ab5f
16. 0xa99a40fe210d675bb6ab72d4bb72ab40eb44ac345773c457fbe58e67a47b03df
17. 0x7a743a0a09057bae687051274e1d45bf973bd36a1a4ba16a191b5d29e3bdfa2a
18. 0xe027395fafb7fc41921c42ca0542524ea22204cbd5908b70b27f3d5fb26f5d0f

Day root

0x2c19037464cc4c493624565f01775d6446fc78eaa118fc6865bfe2bfca9ff78e

Chained

0xd1d7dee8322ceff8f4c8d83aa1fe4a4466825c2af1c97dbde3d35db61234f7be

Published

On Arc Testnet, block 69584042: 0x8bae2b1d097834c8b458513862d70d29ee807e98dc2e863b27250131c15b35ae