Evidence row 527077

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": 3,
      "l30DaysUniquePayers": 3,
      "lastCalledAt": "2026-10-27T10:01:51.367Z"
    },
    "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":"a66e295030103bd5556f2f264ff0e448bb7992f70f07e9ebda1ff346ef2ed361","id":527077,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1793124794184456,"prev":452134,"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. 0x340c493578e8ac9f35820835862e516ef674e4bee4b834e7162f6d0cf8c6c15d
2. 0xd0a9e3951042276ba8b387226dd75f1a2fb41d4c387ef93e5656f6ee291a9ce9
3. 0xced5724ccdf00627204695e7991c466a12d5f7962fa65fec4ad459a862eeea63
4. 0xefcfe6f1daa64ad3dbbf51fa201cc120ebe41a89360811f828b7290e70d83ccd
5. 0x1185fa00995c7b5367a48e64556c67d66438f2b78a17ce6502888c1f25640773
6. 0xcea57d538d4733aedc188082f2b731af149c643adcaee65aa16b9c2af6151dd5
7. 0x7f9fcee46779c2001b56535cb72102982d783e02421340c1ed11b9f022d1ce21
8. 0x6eb1239a8f60ef24c5c969617fbceecf8829ff3229595d211fa800c4346dac9d
9. 0x465e32e1083c4ddfccb04cf11f20624313dbab7a2cf9a8c3d95d9de7d5cbed97
10. 0x454813db020b1bc98c641d32bbc5439b4c00415b21d504d3c0c2d0020f655787
11. 0xcb89a70f40d4a54e11019bbf6ca92907e89dd0bd1af2c3499464c58d9b463f5a
12. 0x7c26e7a3f70416cc7cabc8e770eba81b50b410fc94aaae40ac450b47b34edecc
13. 0x5a83a2d5b2abb340c16172caf3ef83b831e168d2e94e4154a4ad72adcac5cad2
14. 0x595de2dea3b8fa56dbd6142dd78ae79f3e7169c631e41a844b100613abb3e430
15. 0x8360ee1105e4d9f9312067cbbfd47c69c5948665ae582b9684a580c8f4e199e1
16. 0x52efa60e0c3d8525486d2310eb3b6b566c9677c64fd1f819edb072cf101bcbdb
17. 0x22c1fb9487ee0b9732fa017a0cc321eb27a60c08450d112f755089796e12cb1c
18. 0xa20d48798a34aba12eb9c7297722982d910f06c148f5e27ac59307422964a585
19. 0x9fc354c0ea3efc3f1b6548bb77ea902a50f2c9647647ea61592efce2bd795699

Day root

0xdd77e5e99da32c3f154180d63e3c3e6fe11e896a2c6896412ef6b5c4bcf7e795

Chained

0x23bb4dfd09f55c15ac3962f53578e02c6114d5bfd9bb451cf8794fb6e2817ef4

Published

On Arc Testnet, block 69414147: 0xb2ebd83aafeb765a0ce66e76aefb133ed06606c98038fd56191e2bcd1dcb77b4