Evidence row 452134

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://api.maximusmediahouse.com/v1/hash"
    ]
  ],
  "name": "PrepLayer.ai",
  "owner_address": "0x8cb59b1bffb39c130ab85a8177e93eae9ddbaf10",
  "raw": {
    "accepts": [
      {
        "amount": "2000",
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "description": "Content-addressable hashing for caching and dedup. Three algorithms: sha256 (via node:crypto / Web Crypto), xxhash64 and murmur3 (inline pure-JS, deterministic across runs). Returns hex digest + algorithm + byte count.",
          "endpoint": "https://api.maximusmediahouse.com/v1/hash",
          "name": "USD Coin",
          "price_usdc": "0.002",
          "requested_network": "eip155:8453",
          "supported_networks": [
            "eip155:8453",
            "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
            "eip155:137",
            "eip155:42161"
          ],
          "version": "2"
        },
        "maxTimeoutSeconds": 60,
        "network": "eip155:8453",
        "payTo": "0x8cb59b1bffb39c130ab85a8177e93eae9ddbaf10",
        "scheme": "exact"
      }
    ],
    "description": "Content-addressable hashing for caching and dedup. Three algorithms: sha256 (via node:crypto / Web Crypto), xxhash64 and murmur3 (inline pure-JS, deterministic across runs). Returns hex digest + algorithm + byte count.",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "body": {
              "algo": "sha256",
              "text": "some content"
            },
            "bodyType": "json",
            "method": "POST",
            "type": "http"
          },
          "output": {
            "example": {
              "algo": "sha256",
              "hash": "9f86d081884c7d65…"
            },
            "type": "json"
          }
        },
        "schema": {
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "properties": {
            "input": {
              "additionalProperties": false,
              "properties": {
                "body": {
                  "properties": {
                    "algo": {
                      "default": "sha256",
                      "description": "Hash algorithm.",
                      "enum": [
                        "sha256",
                        "xxhash64",
                        "murmur3"
                      ],
                      "type": "string"
                    },
                    "text": {
                      "description": "Source text (1-1000000 chars).",
                      "type": "string"
                    }
                  },
                  "required": [
                    "text"
                  ],
                  "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"
        }
      }
    },
    "lastUpdated": "2026-10-27T10:01:51.534Z",
    "quality": {
      "l30DaysTotalCalls": 2,
      "l30DaysUniquePayers": 2,
      "lastCalledAt": "2026-10-25T02:43:08.81Z"
    },
    "resource": "https://api.maximusmediahouse.com/v1/hash",
    "serviceName": "PrepLayer.ai",
    "tags": [
      "text-processing",
      "deterministic",
      "preprocessing",
      "x402",
      "agents"
    ],
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "Content-addressable hashing for caching and dedup. Three algorithms: sha256 (via node:crypto / Web Crypto), xxhash64 and murmur3 (inline pure-JS, deterministic across runs). Returns hex digest + algorithm + byte count."
}

What the leaf hashes

{"body":"6d40cb0136a2746a5a18a1ebdafc47a02a453a32561f3f13d652ee63547d93c6","id":452134,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1793100517826510,"prev":67335,"subject":"x402_bazaar:https://api.maximusmediahouse.com/v1/hash","subject_kind":"source_record"}

Proof

Fold these into the leaf in order, hashing each sorted pair with keccak256, to reach the root of 2026-10-27 (273461 rows).

1. 0x7f76e010f0ebad4b33d2680813cbc6b59be6b457b03409f0017d4c0d21a68ec0
2. 0xaa6f7ee8a051111d09419e9aacf65649d844a3099d44987984123f70dcd48f61
3. 0xb0300f7d8fea9eda673be141f2aee440f62906bdd281e10448af35ec633b0bc1
4. 0x59a8c26e26aaa1b2b7777ad6a2e37a22a98bb35d438367af1e3d5c55842dcc62
5. 0xe83342bd5dda4019c59fc8d158db8aaf76bd33e6d9a4f2018c2c9ded1be488b1
6. 0xec371c7e2d2770637dfd30a63d9f2b2517605ae61f05eab75969d4417638d719
7. 0x2bcb0df4c63fb5a91fcb498bf4aa852efca8374660c262782bd72583e9e1143c
8. 0x1a5e0ddbc1b9938fd3943e7eb3168b249a5e19ec30f78f127671c1a5f5ba015c
9. 0x8775b8a589c7374fa8692f6df4fa6100acc9f2d58afc1c63986149dd16085d82
10. 0xcc44767a357fd1ce06cfbf7e71adb6e37ce50ffb7946aad78df21622ea550a5f
11. 0xa0cdcac8a8c6902a5f44f885c3d2fb8cdaa8983de14d974fde9b9c692872c6ba
12. 0x233ead52b2b0fe0c87ddc3cb1aef399b68e9e9e33cc2fd50a2643345ab7455ad
13. 0xe38e66e8bf48306ee42504c4df50c2052cc9230af02e2ae6ff66da20232bf797
14. 0xfa0c8e8f1a1710ff197533b0a28208f2e168afe71abb7bb3416e09d1ac371d60
15. 0x3c500ec3d3edf0c74b87a6ca8fcd77656bfbe03db3d478bd0c184d0c88839c6b
16. 0xfecf3d4646dd4984a13dd715499e842c3fde63692336d97394c2bfd8e877ca5d
17. 0xf30fddbf4811226c58e8f0daf36fddd79fc5f1356b592bb1d99a8061ddbabe66
18. 0x2bf8151e5f157dd183b9de6fa00469551932a7a6e3f33a694895000ac9061197
19. 0x9fc354c0ea3efc3f1b6548bb77ea902a50f2c9647647ea61592efce2bd795699

Day root

0xdd77e5e99da32c3f154180d63e3c3e6fe11e896a2c6896412ef6b5c4bcf7e795

Chained

0x23bb4dfd09f55c15ac3962f53578e02c6114d5bfd9bb451cf8794fb6e2817ef4

Published

On Arc Testnet, block 69414147: 0xb2ebd83aafeb765a0ce66e76aefb133ed06606c98038fd56191e2bcd1dcb77b4